Consolidated Schedule of Investments In and Advances to Affiliates (Details)

v3.24.0.1

Consolidated Schedule of Investments In and Advances to Affiliates (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ (120,507)		$ (5,212)		$ 45,336
Amount of Unrealized Gain/(Loss)		232,577		24,816		135,624
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[1]	4,102,177
Ending balance		4,286,271	[2]	4,102,177	[1]
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(50,532)		(5,822)		6,494
Amount of Unrealized Gain/(Loss)		161,793		56,682		99,420
Amount of Interest, Fees or Dividends Credited to Income		197,150		155,967
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,703,172	[1],[3]	1,489,257
Gross Additions		568,452		488,176
Gross Reductions		244,262		268,138
Ending balance		2,006,698	[2],[4]	1,703,172	[1],[3]	1,489,257
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(18,729)		(3,319)		17,181
Amount of Unrealized Gain/(Loss)		33,689		10,314		21,989
Amount of Interest, Fees or Dividends Credited to Income		69,829		54,963
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		618,359	[1],[5]	549,214
Gross Additions		246,241		157,996
Gross Reductions		270,262		104,813
Ending balance		615,002	[2],[6]	618,359	[1],[5]	549,214
Investment, Identifier [Axis]: 2717 MH, L.P., (2717 MH,L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		2,222
Amount of Unrealized Gain/(Loss)		(952)
Amount of Interest, Fees or Dividends Credited to Income		142
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,552
Gross Additions		2,796
Gross Reductions		4,298
Ending balance		6,050		7,552
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 HPP-MS, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		67		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		248		0
Gross Additions		67		248
Gross Reductions		0		0
Ending balance		315		248		0
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				2,389
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,552		3,971
Gross Additions				3,581
Gross Reductions				0
Ending balance				7,552		3,971
Investment, Identifier [Axis]: 423 HAR, LP, LP Interests (423 HAR, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		247
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		996
Gross Reductions		0
Ending balance		996		0
Investment, Identifier [Axis]: AAC Holdings, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(2,079)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[7]	2,079
Gross Additions		0		0
Gross Reductions		0		2,079
Ending balance		0	[8]	$ 0	[7]	2,079
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7]			18.00%
PIK Rate	[7]			18.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				178
Amount of Interest, Fees or Dividends Credited to Income				2,032
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 11,550	[7]	9,794
Gross Additions				1,756
Gross Reductions				0
Ending balance				11,550	[7]	9,794
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8]	18.00%
PIK Rate	[8]	18.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(1)
Amount of Interest, Fees or Dividends Credited to Income		65
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		418
Gross Reductions		0
Ending balance		$ 418	[8]	0
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[8]	18.00%
PIK Rate	[8]	18.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(37)
Amount of Interest, Fees or Dividends Credited to Income		2,382
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,550
Gross Additions		2,382
Gross Reductions		37
Ending balance		13,895	[8]	11,550
Investment, Identifier [Axis]: AAC Holdings, Inc., Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(1,940)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[7],[9]	1,940
Gross Additions		0		0
Gross Reductions		0		1,940
Ending balance		$ 0	[8],[10]	$ 0	[7],[9]	1,940
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[11],[12],[13]	6.00%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (39)
Ending balance		$ 0	[11],[12],[13]	$ (39)	[14],[15],[16],[17]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]	10.20%	[14],[15],[17]
Spread		6.00%	[11],[13]	6.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 741
Ending balance		$ 1,921	[11],[13]	$ 741	[14],[15],[17]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]	10.58%	[14],[15],[17]
Spread		6.00%	[11],[13]	6.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 17,052
Ending balance		$ 19,817	[11],[13]	$ 17,052	[14],[15],[17]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.43%
Spread	[11],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 1,372
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.22%	[8],[13]	10.14%	[7],[17]
Spread		5.75%	[8],[13]	5.75%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 18,969
Ending balance		10,860	[8],[13]	$ 18,969	[7],[17]
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		7,200		0
Amount of Unrealized Gain/(Loss)		(8,200)		1,660
Amount of Interest, Fees or Dividends Credited to Income		0		200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,400	[18]	7,740
Gross Additions		7,200		1,660
Gross Reductions		16,600		0
Ending balance		0		9,400	[18]	7,740
Investment, Identifier [Axis]: AFG Capital Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		144
Gross Additions				0
Gross Reductions				144
Ending balance				0		144
Investment, Identifier [Axis]: AMEREQUIP LLC., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	1,779
Ending balance		$ 2,120	[11],[19]	$ 1,779	[15]
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.40%	[11],[12],[13]	7.40%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (137)
Ending balance		$ (108)	[11],[12],[13]	$ (137)	[14],[15],[16],[17]
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.76%	[11],[13]	11.72%	[14],[15],[17]
Spread		7.40%	[11],[13]	7.40%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 37,463
Ending balance		28,422	[11],[13]	$ 37,463	[14],[15],[17]
Investment, Identifier [Axis]: ASC Interests, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				80
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		800		720
Gross Additions				80
Gross Reductions				0
Ending balance		100		800		720
Investment, Identifier [Axis]: ASC Interests, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		88
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		266
Gross Reductions		0
Ending balance		$ 266		$ 0
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		54		36
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		400		200
Gross Additions		0		230
Gross Reductions		0		30
Ending balance		$ 400		$ 400		200
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(52)		0
Amount of Interest, Fees or Dividends Credited to Income		218		266
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,649		1,636
Gross Additions		1		13
Gross Reductions		53		0
Ending balance		1,597		1,649		1,636
Investment, Identifier [Axis]: ASC Interests, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(700)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		800
Gross Additions		0
Gross Reductions		700
Ending balance		100		800
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	660
Ending balance		$ 670	[11]	$ 660	[15]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.16%
Spread		6.50%	[11],[13]	5.50%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ 0
Ending balance		$ 360	[11],[13]	$ 0	[14],[15],[16],[17]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.16%	[11],[13]	9.32%	[14],[15],[17]
Spread		5.50%	[11],[13]	5.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 6,582
Ending balance		$ 6,660	[11],[13]	$ 6,582	[14],[15],[17]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.16%	[11],[13]	11.32%	[14],[15],[17]
Spread		7.50%	[11],[13]	7.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 6,593
Ending balance		6,660	[11],[13]	$ 6,593	[14],[15],[17]
Investment, Identifier [Axis]: ATS Workholding, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[20]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[11]	$ 0	[15],[20]	0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		5.00%	[11],[21]	5.00%	[15],[20]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(486)		(620)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		634	[15],[20]	1,088
Gross Additions		180		188
Gross Reductions		486		642
Ending balance		$ 328	[11],[21]	$ 634	[15],[20]	1,088
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		5.00%	[11],[21]	5.00%	[15],[20]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(518)		(869)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,005	[15],[20]	1,917
Gross Additions		0		0
Gross Reductions		532		912
Ending balance		473	[11],[21]	1,005	[15],[20]	1,917
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		3,248		0
Amount of Unrealized Gain/(Loss)		(3,270)		3,270
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,270	[7]	0
Gross Additions		3,248		3,270
Gross Reductions		6,518		0
Ending balance		$ 0		$ 3,270	[7]	0
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[17]			12.23%
Spread		7.50%		7.50%	[7],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(134)		134
Amount of Interest, Fees or Dividends Credited to Income		886		758
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,343	[7],[17]	7,092
Gross Additions		575		362
Gross Reductions		6,918		1,111
Ending balance		$ 0		$ 6,343	[7],[17]	7,092
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	[7]
PIK Rate	[7]			10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(306)		306
Amount of Interest, Fees or Dividends Credited to Income		1,160		329
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,598	[7]	1,963
Gross Additions		1,160		635
Gross Reductions		3,758		0
Ending balance		0		2,598	[7]	1,963
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	406
Ending balance		$ 892	[11],[19]	$ 406	[15]
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[11],[12],[13]	7.25%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (57)
Ending balance		$ (38)	[11],[12],[13]	$ (57)	[14],[15],[16],[17]
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.76%	[11],[13]	12.17%	[14],[15],[17]
Spread		7.25%	[11],[13]	7.25%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 27,927
Ending balance		24,080	[11],[13]	$ 27,927	[14],[15],[17]
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[15],[17]			13.23%
Spread	[15],[17]			8.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	1,678
Ending balance	[15],[17]			$ 1,678
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[15],[17]			13.23%
Spread	[15],[17]			8.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	9,891
Ending balance	[15],[17]			$ 9,891
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[15],[17]			16.17%
Spread	[15],[17]			12.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 807
Ending balance	[15],[17]			$ 807
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[15],[17]			13.88%
Spread		7.50%	[11],[12],[13]	9.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 14,618
Ending balance		$ (2)	[11],[12],[13]	$ 14,618	[15],[17]
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.98%	[11],[13]	13.57%	[15],[17]
Spread		7.50%	[11],[13]	9.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 4,368
Ending balance		24,796	[11],[13]	$ 4,368	[15],[17]
Investment, Identifier [Axis]: Acumera, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[22]	$ 110
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	[11],[13],[23]	10.00%	[15],[17],[24]
Spread		7.00%	[11],[13],[23]	6.00%	[15],[17],[24]
PIK Rate	[11],[13],[23]	1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[24]	$ 4,729
Ending balance		$ 7,684	[11],[13],[23]	$ 4,729	[15],[17],[24]
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	[11],[13],[23]	10.00%	[15],[17],[24]
Spread		7.00%	[11],[13],[23]	7.50%	[15],[17],[24]
PIK Rate	[11],[13],[23]	1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[24]	$ 24,086
Ending balance		$ 20,784	[11],[13],[23]	$ 24,086	[15],[17],[24]
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[11],[12],[13]	6.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (10)
Ending balance		$ (8)	[11],[12],[13]	$ (10)	[15],[16],[17]
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%	[11],[13]	11.12%	[15],[17]
Spread		5.00%	[11],[13]	6.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 6,617
Ending balance		$ 6,550	[11],[13]	$ 6,617	[15],[17]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.29%	[11],[13]	10.46%	[14],[15],[17]
Spread		9.75%	[11],[13]	6.75%	[14],[15],[17]
PIK Rate	[11],[13]	15.29%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 14,606
Ending balance		$ 5,495	[11],[13]	$ 14,606	[14],[15],[17]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.29%	[11],[13]	12.46%	[14],[15],[17]
Spread		9.75%	[11],[13]	8.75%	[14],[15],[17]
PIK Rate	[11],[13]	15.29%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 14,654
Ending balance		$ 8,922	[11],[13]	$ 14,654	[14],[15],[17]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13],[21]	17.29%
Spread	[11],[13],[21]	11.75%
PIK Rate	[11],[13],[21]	17.29%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[21]	$ 3,369
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13],[21]	17.29%
Spread	[11],[13],[21]	11.75%
PIK Rate	[11],[13],[21]	17.29%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[21]	$ 5,482
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[7],[20]			7.50%
Spread	[7],[20]			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[20]	168
Ending balance		134	[8],[21],[25]	$ 168	[7],[20]
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[7],[17],[20]			7.50%
Spread	[7],[17],[20]			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17],[20]	808
Ending balance		647	[8],[21],[25]	$ 808	[7],[17],[20]
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Affiliate Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		106
Amount of Unrealized Gain/(Loss)		(1,308)
Amount of Interest, Fees or Dividends Credited to Income		(1,469)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(625)
Gross Additions		1,454
Gross Reductions		21,493
Ending balance		0		(625)
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Affiliate Investments.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(3,538)
Amount of Interest, Fees or Dividends Credited to Income				(1,491)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		(15,962)
Gross Additions				10,853
Gross Reductions				10,853
Ending balance				0		(15,962)
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Control Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		1,308
Amount of Interest, Fees or Dividends Credited to Income		1,469
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		625
Gross Additions		21,493
Gross Reductions		1,454
Ending balance		0		625
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Control Investments.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				3,677
Amount of Interest, Fees or Dividends Credited to Income				1,491
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		6,123
Gross Additions				0
Gross Reductions				0
Ending balance				0		6,123
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,504
Ending balance		$ 4,860		$ 3,504
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Total Rate		14.13%		14.13%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate		14.13%		14.13%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 0
Ending balance		0		$ 0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		1,356		(1,390)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,504		4,894
Gross Additions		1,356		0
Gross Reductions		0		1,390
Ending balance		$ 4,860		$ 3,504		4,894
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13]	15.38%
Spread		10.00%	[13]	10.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		13		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(3)	[16],[17]	(4)
Gross Additions		222		1
Gross Reductions		0		0
Ending balance		$ 219	[13]	$ (3)	[16],[17]	(4)
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.38%	[13]	14.13%	[17]
Spread		10.00%	[13]	10.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		748		690
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,545	[17]	4,740
Gross Additions		78		85
Gross Reductions		539		280
Ending balance		4,084	[13]	4,545	[17]	4,740
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[9]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0	[10]	0	[9]	0
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance		0	[11]	$ 0	[15]
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	14,060
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 0
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[11]	13.41%	[15],[17]
Spread	[15],[17]			9.00%
PIK Rate	[11]	15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 3,945
Ending balance		$ 1,907	[11]	$ 3,945	[15],[17]
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.04%	[11],[13]	13.56%	[15],[17]
Spread		6.50%	[11],[13]	9.00%	[15],[17]
PIK Rate	[11],[13]	12.04%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 25,065
Ending balance		7,149	[11],[13]	$ 25,065	[15],[17]
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	1,388
Ending balance		2,230	[11]	$ 1,388	[15]
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[15],[16],[17]			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	(135)
Ending balance	[14],[15],[16],[17]			$ (135)
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			10.92%
Spread	[14],[15],[17]			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	66,511
Ending balance	[14],[15],[17]			$ 66,511
Investment, Identifier [Axis]: Arrow International, Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17],[26]			10.36%
Spread	[14],[15],[17],[26]			6.60%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[26]	36,000
Ending balance	[14],[15],[17],[26]			$ 36,000
Investment, Identifier [Axis]: BBB Tank Services, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(800)		0
Amount of Unrealized Gain/(Loss)		800		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		800		0
Gross Reductions		800		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Preferred Stock (non-voting)
Schedule of Investments [Line Items]
Total Rate				15.00%
PIK Rate		15.00%
Amount of Realized Gain/(Loss)		$ (162)		$ 0
Amount of Unrealized Gain/(Loss)		162		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		162		0
Gross Reductions		162		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 1
Schedule of Investments [Line Items]
Total Rate	[17],[27]			15.12%
Spread		11.00%		11.00%	[17],[27]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		102		105
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		800	[17],[27]	800
Gross Additions		0		0
Gross Reductions		800		0
Ending balance		$ 0		$ 800	[17],[27]	800
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate	[17],[27]			15.12%
Spread		11.00%		11.00%	[17],[27]
Amount of Realized Gain/(Loss)		$ (1,400)		$ 0
Amount of Unrealized Gain/(Loss)		1,914		379
Amount of Interest, Fees or Dividends Credited to Income		539		527
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,086	[17],[27]	1,707
Gross Additions		1,914		379
Gross Reductions		4,000		0
Ending balance		0		2,086	[17],[27]	1,707
Investment, Identifier [Axis]: Barfly Ventures, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		820		1,390
Amount of Interest, Fees or Dividends Credited to Income		1		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,320	[15]	1,930
Gross Additions		820		1,390
Gross Reductions		0		0
Ending balance		$ 4,140	[11]	$ 3,320	[15]	1,930
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		7.00%	[11]	7.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		50		51
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		711	[15]	710
Gross Additions		0		1
Gross Reductions		0		0
Ending balance		711	[11]	711	[15]	710
Investment, Identifier [Axis]: Batjer TopCo, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		2,055		0
Amount of Interest, Fees or Dividends Credited to Income		686		631
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,095	[18]	0
Gross Additions		2,055		4,095
Gross Reductions		0		0
Ending balance		$ 6,150	[19]	4,095	[18]	0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		6		0
Amount of Interest, Fees or Dividends Credited to Income		2		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(8)	[16]	0
Gross Additions		8		451
Gross Reductions		0		459
Ending balance		$ 0	[12]	(8)	[16]	0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		22		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		630		0
Gross Reductions		360		0
Ending balance		$ 270		$ 0	[16]	0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		67		0
Amount of Interest, Fees or Dividends Credited to Income		1,134		1,139
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,933		0
Gross Additions		92		10,933
Gross Reductions		450		0
Ending balance		10,575		$ 10,933		0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1
Schedule of Investments [Line Items]
PIK Rate	[15],[16],[18],[28]			16.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[18],[28]	270
Ending balance		200	[11],[29]	$ 270	[15],[16],[18],[28]
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate	[15],[18],[28]			8.00%
PIK Rate	[15],[18],[28]			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18],[28]	4,561
Ending balance		2,560	[11],[19],[29]	$ 4,561	[15],[18],[28]
Investment, Identifier [Axis]: Berry Aviation, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15]			12.00%
PIK Rate	[15]			1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	$ 195
Ending balance	[15]			$ 195
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[11],[12],[13]	1.00%	[14],[15],[16],[17]
PIK Rate	[14],[15],[16],[17]			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (76)
Ending balance		$ (62)	[11],[12],[13]	$ (76)	[14],[15],[16],[17]
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.64%	[11],[13]	11.40%	[14],[15],[17]
Spread		7.25%	[11],[13]	1.00%	[14],[15],[17]
PIK Rate		6.25%	[11],[13]	6.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 27,505
Ending balance		27,550	[11],[13]	$ 27,505	[14],[15],[17]
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	420
Ending balance		120	[11]	420	[15]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[18]	4,860
Ending balance		$ 550	[8]	$ 4,860	[7],[18]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8],[13]	16.00%
Spread		7.50%	[8],[13]	8.50%	[7],[16],[17]
PIK Rate	[8],[13]	15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[16],[17]	$ 0
Ending balance		$ 1,767	[8],[13]	$ 0	[7],[16],[17]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.96%	[8],[13]	12.94%	[7],[17]
Spread		8.50%	[8],[13]	8.50%	[7],[17]
PIK Rate	[8],[13]	12.96%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 3,139
Ending balance		3,446	[8],[13]	$ 3,139	[7],[17]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[9]	1,095
Ending balance		120	[8],[10]	1,095	[7],[9]
Investment, Identifier [Axis]: Boccella Precast Products LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(980)		(1,860)
Amount of Interest, Fees or Dividends Credited to Income		122		66
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,970	[18]	4,830
Gross Additions		0		0
Gross Reductions		980		1,860
Ending balance		$ 1,990		$ 2,970	[18]	4,830
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		32		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		320		320
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		320		320		320
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class A Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				2,466
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 0		10,194
Gross Additions				0
Gross Reductions				10,194
Ending balance				$ 0		10,194
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[19]	8.00%	[18]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(400)		8,250
Amount of Interest, Fees or Dividends Credited to Income		4,065		1,210
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		31,420	[18]	23,170
Gross Additions		0		8,250
Gross Reductions		400		0
Ending balance		$ 31,020	[19]	$ 31,420	[18]	23,170
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.48%	[13],[30]	13.39%	[14],[17],[31]
Spread		9.11%	[13],[30]	9.26%	[14],[17],[31]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(141)
Amount of Interest, Fees or Dividends Credited to Income		14,208
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[17],[31]	99,194
Gross Additions		141
Gross Reductions		2,779
Ending balance		96,556	[13],[30]	$ 99,194	[14],[17],[31]
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				23
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0		0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.39%
Spread				9.26%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				305
Amount of Interest, Fees or Dividends Credited to Income				9,164
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		99,194		39,000
Gross Additions				60,194
Gross Reductions				0
Ending balance				$ 99,194		39,000
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[32],[33]	0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[32],[33]	$ 500
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13],[32],[33]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13],[32],[33]	$ (25)
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13],[32],[33]	11.54%
Spread	[11],[13],[32],[33]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[32],[33]	$ 6,405
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13],[32],[33]	13.54%
Spread	[11],[13],[32],[33]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[32],[33]	$ 6,405
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.75%	[11],[13],[21],[25]	12.50%	[15],[17],[20],[27]
Spread		7.25%	[11],[13],[21],[25]	9.25%	[15],[17],[20],[27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[20],[27]	$ 761
Ending balance		$ 761	[11],[13],[21],[25]	$ 761	[15],[17],[20],[27]
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.75%	[11],[13],[21],[25]	12.50%	[15],[17],[20],[27]
Spread		7.25%	[11],[13],[21],[25]	9.25%	[15],[17],[20],[27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[20],[27]	$ 2,916
Ending balance		1,075	[11],[13],[21],[25]	$ 2,916	[15],[17],[20],[27]
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(1,460)		(630)
Amount of Interest, Fees or Dividends Credited to Income		120		828
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,080	[18]	7,710
Gross Additions		0		0
Gross Reductions		1,460		630
Ending balance		$ 5,620	[19]	$ 7,080	[18]	7,710
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.46%	[13]	14.12%	[17]
Spread		10.00%	[13]	10.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		899		862
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,964	[17]	8,037
Gross Additions		30		23
Gross Reductions		496		2,096
Ending balance		5,498	[13]	5,964	[17]	8,037
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		100		100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,000	[18],[28]	1,000
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 1,000	[19],[29]	$ 1,000	[18],[28]	1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		1,162		1,162
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,813		8,813
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 8,813		$ 8,813		8,813
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		132		132
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,000	[28]	1,000
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		1,000		1,000	[28]	1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[9]	4,340
Ending balance		4,290	[10]	4,340	[9]
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(21)		117
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,828		1,712
Gross Additions		0		116
Gross Reductions		20		0
Ending balance		1,808		1,828		1,712
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(29)		163
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,512		2,348
Gross Additions		0		164
Gross Reductions		30		0
Ending balance		2,482		2,512		2,348
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund III, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	4,727
Ending balance		4,080	[32],[37],[38]	4,727	[18],[34],[35],[36]
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund IV, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	4,541
Ending balance		4,358	[19],[32],[37],[38]	4,541	[18],[34],[35],[36]
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund V, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	2,229
Ending balance		$ 2,448	[19],[32],[37],[38]	$ 2,229	[34],[35],[36]
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		6.00%		6.00%
PIK Rate		6.00%		6.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%	[25]	9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		183		103
Amount of Interest, Fees or Dividends Credited to Income		2,188		1,894
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,337		14,370
Gross Additions		183		103
Gross Reductions		376		2,136
Ending balance		$ 12,144	[25]	$ 12,337		14,370
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	10.46%
Spread		5.00%	[11],[13]	5.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ 0
Ending balance		$ 465	[11],[13]	$ 0	[15],[16],[17]
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.46%	[11],[13]	8.91%	[15],[17]
Spread		5.00%	[11],[13]	5.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 19,933
Ending balance		19,681	[11],[13]	$ 19,933	[15],[17]
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	1,789
Ending balance		1,789		1,789	[18]
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Ending balance		0		0
Investment, Identifier [Axis]: CBT Nuggets, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		1,130		(1,620)
Amount of Interest, Fees or Dividends Credited to Income		2,902		3,305
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		49,002	[18]	50,620
Gross Additions		1,128		0
Gross Reductions		0		1,618
Ending balance		50,130	[19]	49,002	[18]	50,620
Investment, Identifier [Axis]: CMS Minerals Investments, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		99		0
Amount of Unrealized Gain/(Loss)		(366)		230
Amount of Interest, Fees or Dividends Credited to Income		44		198
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,670	[18],[28]	1,974
Gross Additions		99		230
Gross Reductions		1,769		534
Ending balance		$ 0		$ 1,670	[18],[28]	1,974
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (66)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (66)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.45%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 10,920
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[17],[39]			11.99%
Spread	[15],[17],[39]			8.50%
PIK Rate	[15],[17],[39]			0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[39]	28,328
Ending balance	[15],[17],[39]			$ 28,328
Investment, Identifier [Axis]: Café Brazil, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(230)		(360)
Amount of Interest, Fees or Dividends Credited to Income		149		178
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,210	[18]	2,570
Gross Additions		0		0
Gross Reductions		230		360
Ending balance		$ 1,980	[19]	$ 2,210	[18]	2,570
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[19]	15.00%	[18]
PIK Rate		15.00%	[19]	15.00%	[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 3,994
Ending balance		4,601	[19]	$ 3,994	[18]
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(9,800)		12,220
Amount of Interest, Fees or Dividends Credited to Income		250		250
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,495		13,275
Gross Additions		0		12,220
Gross Reductions		9,800		0
Ending balance		15,695		25,495		13,275
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	25,495
Ending balance		$ 15,695	[19]	$ 25,495	[18]
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Total Rate		15.00%		15.00%
PIK Rate		15.00%		15.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		607		933
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,994		9,510
Gross Additions		607		933
Gross Reductions		0		6,449
Ending balance		$ 4,601		$ 3,994		9,510
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.69%	[13],[19]	13.75%	[17]
Spread		10.00%	[13],[19]	10.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(359)		49
Amount of Interest, Fees or Dividends Credited to Income		4,366		3,454
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		28,000	[17]	27,915
Gross Additions		14		85
Gross Reductions		359		0
Ending balance		27,655	[13],[19]	$ 28,000	[17]	27,915
Investment, Identifier [Axis]: Camin Cargo Control, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[17]			10.88%
Spread	[7],[17]			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	14,685
Ending balance	[7],[17]			$ 14,685
Investment, Identifier [Axis]: Career Team Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,500		4,500
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 4,500		$ 4,500		4,500
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13]	11.38%
Spread		6.00%	[13]	6.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		40		10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(9)	[16],[17]	0
Gross Additions		1,340		621
Gross Reductions		450		630
Ending balance		$ 881	[13]	$ (9)	[16],[17]	0
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2,612		2,607
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,090		20,050
Gross Additions		41		40
Gross Reductions		225		0
Ending balance		19,906		20,090		20,050
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	246
Ending balance		$ 246	[11]	$ 246	[15]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[11],[12],[13]	6.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (11)
Ending balance		$ (8)	[11],[12],[13]	$ (11)	[15],[16],[17]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.61%	[11],[13]	10.73%	[15],[17]
Spread		6.00%	[11],[13]	6.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 7,914
Ending balance		$ 7,933	[11],[13]	$ 7,914	[15],[17]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.61%	[11],[13]	10.48%	[15],[17]
Spread		6.00%	[11],[13]	5.75%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 6,133
Ending balance		6,102	[11],[13]	$ 6,133	[15],[17]
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		2,340		2,578
Amount of Interest, Fees or Dividends Credited to Income		120		120
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,700		5,840
Gross Additions		2,340		2,860
Gross Reductions		0		0
Ending balance		$ 11,040		$ 8,700		5,840
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.00%	[12],[13]	9.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		12		28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	0
Gross Additions		0		1,440
Gross Reductions		0		1,440
Ending balance		$ 0	[12],[13]	$ 0	[16],[17]	0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%	[13]	13.13%	[17]
Spread		9.00%	[13]	9.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		62		507
Amount of Interest, Fees or Dividends Credited to Income		2,315		1,767
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,954	[17]	8,864
Gross Additions		2,620		6,476
Gross Reductions		0		386
Ending balance		17,574	[13]	14,954	[17]	8,864
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		6,400		(1,220)
Amount of Interest, Fees or Dividends Credited to Income		4,182		1,853
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,920	[18]	24,140
Gross Additions		6,400		0
Gross Reductions		0		1,220
Ending balance		29,320	[19]	22,920	[18]	24,140
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		150		719
Amount of Interest, Fees or Dividends Credited to Income		92		78
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,710	[18],[28]	1,540
Gross Additions		150		1,170
Gross Reductions		0		0
Ending balance		$ 2,860	[19],[29]	$ 2,710	[18],[28]	1,540
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[12],[13]	6.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		195		0
Amount of Interest, Fees or Dividends Credited to Income		45		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ 0	[16],[17]	0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.49%	[13]	12.13%	[17]
Spread		8.00%	[13]	8.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(7)		(68)
Amount of Interest, Fees or Dividends Credited to Income		2,203		1,845
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		16,945	[17]	17,817
Gross Additions		7		68
Gross Reductions		1,332		940
Ending balance		15,620	[13]	16,945	[17]	17,817
Investment, Identifier [Axis]: Chandler Signs Holdings, LLC, Class A Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		1,797		0
Amount of Unrealized Gain/(Loss)		(290)		1,330
Amount of Interest, Fees or Dividends Credited to Income		60		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,790	[15]	460
Gross Additions		1,797		1,330
Gross Reductions		3,587		0
Ending balance		$ 0		$ 1,790	[15]	460
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.60%	[11],[13],[40]	10.72%	[14],[15],[17],[41]
Spread		7.00%	[11],[13],[40]	6.25%	[14],[15],[17],[41]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[41]	$ 1,841
Ending balance		$ 1,988	[11],[13],[40]	$ 1,841	[14],[15],[17],[41]
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.66%	[11],[13]	10.71%	[14],[15],[17],[42]
Spread		7.00%	[11],[13]	6.25%	[14],[15],[17],[42]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[42]	$ 38,484
Ending balance		$ 35,064	[11],[13]	$ 38,484	[14],[15],[17],[42]
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.66%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 1,943
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.66%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 4,695
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		2,350		(650)
Amount of Interest, Fees or Dividends Credited to Income		1,463		764
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,340	[18]	13,990
Gross Additions		2,350		0
Gross Reductions		0		650
Ending balance		$ 15,690	[19]	$ 13,340	[18]	13,990
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(35)		(44)
Amount of Interest, Fees or Dividends Credited to Income		604		613
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,694		5,694
Gross Additions		35		44
Gross Reductions		35		44
Ending balance		5,694		5,694		5,694
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(3,020)		(2,030)
Amount of Interest, Fees or Dividends Credited to Income		275		758
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,220	[18]	10,250
Gross Additions		0		0
Gross Reductions		3,020		2,030
Ending balance		5,200	[19]	8,220	[18]	10,250
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		220		80
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		610	[28]	530
Gross Additions		519		80
Gross Reductions		0		0
Ending balance		$ 1,129	[29]	$ 610	[28]	530
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.50%
Spread	[14],[16],[17]			9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[14],[16],[17]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12]	$ 0	[14],[16],[17]	0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		13.23%	[14],[17]
Spread	[14],[17]			9.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(138)
Amount of Interest, Fees or Dividends Credited to Income		1,172
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[17]	10,440
Gross Additions		40
Gross Reductions		2,058
Ending balance		8,422		$ 10,440	[14],[17]
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate				13.23%
Spread				9.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				1,255
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 10,440		10,401
Gross Additions				39
Gross Reductions				0
Ending balance				$ 10,440		10,401
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		104		107
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,039		1,071
Gross Additions		1		1
Gross Reductions		36		33
Ending balance		1,004		$ 1,039		1,071
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[20],[27]			15.00%
PIK Rate	[15],[20],[27]			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[20],[27]	19
Ending balance		16	[11],[21],[25]	$ 19	[15],[20],[27]
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(8,639)		9,380
Amount of Interest, Fees or Dividends Credited to Income		5,354		1,711
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		24,637	[18]	15,260
Gross Additions		0		9,377
Gross Reductions		8,637		0
Ending balance		$ 16,000	[19]	$ 24,637	[18]	15,260
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.69%	[13]	9.75%	[17]
Spread		6.00%	[13]	6.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		537		639
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,560	[17]	4,000
Gross Additions		0		11,720
Gross Reductions		0		11,160
Ending balance		$ 4,560	[13]	$ 4,560	[17]	4,000
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(43)		(43)
Amount of Interest, Fees or Dividends Credited to Income		1,606		1,606
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,274		19,274
Gross Additions		43		43
Gross Reductions		43		43
Ending balance		19,274		19,274		19,274
Investment, Identifier [Axis]: Cody Pools, Inc., Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		14,290		10,540
Amount of Interest, Fees or Dividends Credited to Income		4,877		4,015
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		58,180	[18],[28]	47,640
Gross Additions		14,290		10,540
Gross Reductions		0		0
Ending balance		72,470	[19],[29]	$ 58,180	[18],[28]	47,640
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[17]			15.38%
Spread	[17]			10.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[17]	1,462
Ending balance		$ 0	[12]	$ 1,462	[17]
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		11
Amount of Interest, Fees or Dividends Credited to Income		14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		0		$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1.2
Schedule of Investments [Line Items]
Total Rate				15.38%
Spread				10.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				19
Amount of Interest, Fees or Dividends Credited to Income				119
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 1,462		(13)
Gross Additions				4,971
Gross Reductions				3,496
Ending balance				$ 1,462		(13)
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		15.38%	[17]
Spread	[17]			10.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[17]	$ 40,801
Ending balance		$ 42,073		$ 40,801	[17]
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		31
Amount of Interest, Fees or Dividends Credited to Income		3,384
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		46,312
Gross Reductions		4,239
Ending balance		42,073		$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2.2
Schedule of Investments [Line Items]
Total Rate				15.38%
Spread				10.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(86)
Amount of Interest, Fees or Dividends Credited to Income				5,615
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 40,801		42,497
Gross Additions				86
Gross Reductions				1,782
Ending balance				40,801		42,497
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Spread		10.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(19)
Amount of Interest, Fees or Dividends Credited to Income		96
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,462
Gross Additions		32
Gross Reductions		1,494
Ending balance		$ 0		1,462
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Spread		10.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(280)
Amount of Interest, Fees or Dividends Credited to Income		2,683
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		40,801
Gross Additions		0
Gross Reductions		40,801
Ending balance		0		40,801
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				30
Amount of Interest, Fees or Dividends Credited to Income				1,397
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,160	[18]	9,130
Gross Additions				30
Gross Reductions				0
Ending balance				9,160	[18]	9,130
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		1,440
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		2,400
Gross Reductions		0
Ending balance		2,400		0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(1,480)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,160
Gross Additions		0
Gross Reductions		1,480
Ending balance		7,680		9,160
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		52		48
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		1,600		1,600
Gross Reductions		1,600		1,600
Ending balance		$ 0	[12]	$ 0	[16]	0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(319)		0
Amount of Interest, Fees or Dividends Credited to Income		1,804		2,953
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,151		24,351
Gross Additions		55		60
Gross Reductions		1,579		1,260
Ending balance		21,627		23,151		24,351
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(5,380)		7,830
Amount of Interest, Fees or Dividends Credited to Income		316		632
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,830	[18]	12,000
Gross Additions		0		7,830
Gross Reductions		5,380		0
Ending balance		$ 14,450	[19]	$ 19,830	[18]	12,000
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.00%	[12],[13],[25]	9.00%	[16],[17],[27]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17],[27]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13],[25]	$ 0	[16],[17],[27]	0
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%	[13]	13.13%	[17]
Spread		9.00%	[13]	9.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(9)		(16)
Amount of Interest, Fees or Dividends Credited to Income		668		642
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,241	[17]	6,477
Gross Additions		9		16
Gross Reductions		1,796		1,252
Ending balance		3,454	[13]	5,241	[17]	6,477
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		7,454
Gross Reductions		0
Ending balance		$ 7,454		0
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0	[12]	0
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		608
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		17,034
Gross Reductions		0
Ending balance		$ 17,034		$ 0
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.52%	[11],[13],[43]	12.56%	[15],[17],[44]
Spread		8.00%	[11],[13],[43]	8.00%	[15],[17],[44]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[44]	$ 4,621
Ending balance		$ 4,848	[11],[13],[43]	$ 4,621	[15],[17],[44]
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.52%	[11],[13]	12.56%	[15],[17]
Spread		8.00%	[11],[13]	8.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 17,178
Ending balance		17,757	[11],[13]	$ 17,178	[15],[17]
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		13
Amount of Interest, Fees or Dividends Credited to Income		443
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,657
Gross Additions		13
Gross Reductions		3,318
Ending balance		4,352		7,657
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	7,657
Ending balance		4,352	[19],[32],[37],[38]	7,657	[18],[34],[35],[36]
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(142)
Amount of Interest, Fees or Dividends Credited to Income				566
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,657		9,959
Gross Additions				0
Gross Reductions				2,302
Ending balance				7,657		9,959
Investment, Identifier [Axis]: Construction Supply Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18]	21,165
Ending balance		23,135	[11]	21,165	[15],[18]
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		38		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		588	[34],[35],[36]	710
Gross Additions		0		0
Gross Reductions		20		122
Ending balance		568	[19],[32],[37],[38]	588	[34],[35],[36]	710
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		163
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		15,000
Gross Reductions		0
Ending balance		$ 15,000		0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		0		0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		2,989
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		28,752
Gross Reductions		363
Ending balance		$ 28,389		0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 28,389
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		400		1,316
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,260		5,944
Gross Additions		400		1,316
Gross Reductions		0		0
Ending balance		$ 7,660		$ 7,260		5,944
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(49)		165
Amount of Interest, Fees or Dividends Credited to Income		2,518		2,621
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,200		20,993
Gross Additions		49		207
Gross Reductions		2,449		0
Ending balance		$ 18,800		$ 21,200		20,993
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[11]	8.00%	[15]
PIK Rate		8.00%	[11]	8.00%	[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	$ 380
Ending balance		$ 260	[11]	$ 380	[15]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)
Schedule of Investments [Line Items]
Total Rate		10.00%	[11],[19]	10.00%	[15],[18]
PIK Rate		10.00%	[11],[19]	10.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18]	$ 1,161
Ending balance		1,284	[11],[19]	$ 1,161	[15],[18]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[15],[16],[17]			7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	(1)
Ending balance	[15],[16],[17]			$ (1)
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[15],[17]			12.24%
Spread	[15],[17]			7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	5,934
Ending balance	[15],[17]			$ 5,934
Investment, Identifier [Axis]: Dalton US Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	201
Ending balance		830	[11]	$ 201	[15]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			11.90%
Spread	[14],[15],[17]			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	1,077
Ending balance	[14],[15],[17]			$ 1,077
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 2
Schedule of Investments [Line Items]
Spread	[14],[15],[16],[17]			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	(74)
Ending balance	[14],[15],[16],[17]			$ (74)
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			12.56%
Spread	[14],[15],[17]			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	14,186
Ending balance	[14],[15],[17]			$ 14,186
Investment, Identifier [Axis]: Datacom, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(2,600)		60
Amount of Interest, Fees or Dividends Credited to Income		(96)		96
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,670	[18]	2,610
Gross Additions		0		60
Gross Reductions		2,600		0
Ending balance		$ 70		$ 2,670	[18]	2,610
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		7.50%		7.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		40		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		223		0
Gross Additions		809		223
Gross Reductions		585		0
Ending balance		$ 447		$ 223		0
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		7.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(85)		228
Amount of Interest, Fees or Dividends Credited to Income		1,012		829
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,789		7,668
Gross Additions		153		391
Gross Reductions		355		270
Ending balance		7,587		7,789		7,668
Investment, Identifier [Axis]: Digital Products Holdings LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		200		200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,835	[18]	9,835
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 9,835	[19]	$ 9,835	[18]	9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.38%	[13]	14.13%	[17]
Spread		10.00%	[13]	10.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(67)		0
Amount of Interest, Fees or Dividends Credited to Income		2,332		1,991
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,523	[17]	16,801
Gross Additions		0		43
Gross Reductions		833		1,321
Ending balance		14,690	[13]	15,523	[17]	16,801
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(1,480)		3,870
Amount of Interest, Fees or Dividends Credited to Income		171		1,371
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,220	[18]	18,350
Gross Additions		0		3,870
Gross Reductions		1,480		0
Ending balance		$ 20,740	[19]	$ 22,220	[18]	18,350
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.00%
Spread	[16],[17]			11.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(29)		88
Amount of Interest, Fees or Dividends Credited to Income		91		235
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	(22)
Gross Additions		1,304		4,272
Gross Reductions		71		4,250
Ending balance		$ 1,233		$ 0	[16],[17]	(22)
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%		15.13%	[17]
Spread	[17]			11.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(59)		145
Amount of Interest, Fees or Dividends Credited to Income		3,687		327
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		27,267	[17]	0
Gross Additions		59		27,267
Gross Reductions		1,783		0
Ending balance		25,543		$ 27,267	[17]	0
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Spread				11.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(137)
Amount of Interest, Fees or Dividends Credited to Income				2,953
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		24,070
Gross Additions				0
Gross Reductions				24,070
Ending balance				0		24,070
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners - A, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		241		64
Amount of Unrealized Gain/(Loss)		(221)		(335)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,898	[34],[35],[36]	3,280
Gross Additions		241		64
Gross Reductions		508		446
Ending balance		2,631	[32],[37],[38]	2,898	[34],[35],[36]	3,280
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		759		202
Amount of Unrealized Gain/(Loss)		(539)		(1,055)
Amount of Interest, Fees or Dividends Credited to Income		0		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,127	[34],[35],[36]	10,329
Gross Additions		759		202
Gross Reductions		1,443		1,404
Ending balance		8,443	[32],[37],[38]	9,127	[34],[35],[36]	10,329
Investment, Identifier [Axis]: Dos Rios Stone Products LLC, Class A Preferred Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		250		690
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,330	[15],[28]	640
Gross Additions		250		690
Gross Reductions		0		0
Ending balance		1,580	[11],[29]	1,330	[15],[28]	640
Investment, Identifier [Axis]: Dreyfus Government Cash Management
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[45]	13,476
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance		0	[11]	0	[15]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	128
Ending balance		60	[11]	128	[15]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance		$ 0	[11]	$ 0	[15]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.45%	[11],[13]	9.18%	[14],[15],[17]
Spread		5.00%	[11],[13]	4.50%	[14],[15],[17]
PIK Rate		10.45%	[11],[13]	9.18%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 1,717
Ending balance		$ 1,912	[11],[13]	$ 1,717	[14],[15],[17]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.45%	[11],[13]	11.18%	[14],[15],[17]
Spread		7.00%	[11],[13]	6.50%	[14],[15],[17]
PIK Rate		12.45%	[11],[13]	11.18%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 1,642
Ending balance		1,859	[11],[13]	$ 1,642	[14],[15],[17]
Investment, Identifier [Axis]: EIG Fund Investments, LP Interests (EIG Global Private Debt Fund-A, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		33		20
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		89		103
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,013	[18],[34],[35],[36]	547
Gross Additions		176		1,102
Gross Reductions		429		636
Ending balance		760	[19],[32],[37],[38]	$ 1,013	[18],[34],[35],[36]	547
Investment, Identifier [Axis]: EPIC Y-Grade Services, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[17]			10.70%
Spread	[7],[17]			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 6,141
Ending balance	[7],[17]			$ 6,141
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.50%	[11],[13]	11.73%	[15],[17]
Spread		8.00%	[11],[13]	7.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 3,276
Ending balance		$ 927	[11],[13]	$ 3,276	[15],[17]
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%	[11],[13]	11.73%	[15],[17]
Spread		8.00%	[11],[13]	7.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 4,916
Ending balance		$ 4,596	[11],[13]	$ 4,916	[15],[17]
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.50%	[11],[13]	11.73%	[15],[17]
Spread		8.00%	[11],[13]	7.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 22,967
Ending balance		$ 9,167	[11],[13]	$ 22,967	[15],[17]
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.50%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 1,901
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.50%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 10,403
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		364		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,603		0
Gross Additions		364		9,668
Gross Reductions		1,877		2,065
Ending balance		6,090		7,603		0
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		112		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,558	[28]	0
Gross Additions		112		1,558
Gross Reductions		0		0
Ending balance		$ 1,670	[29]	$ 1,558	[28]	0
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[12],[13]	6.00%	[14],[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		9		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(9)	[14],[16],[17]	0
Gross Additions		2		0
Gross Reductions		0		9
Ending balance		$ (7)	[12],[13]	$ (9)	[14],[16],[17]	0
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2,322		948
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,594		0
Gross Additions		38		18,594
Gross Reductions		0		0
Ending balance		$ 18,632		$ 18,594		0
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.00%		9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		573		144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,294		0
Gross Additions		3		6,301
Gross Reductions		45		7
Ending balance		$ 6,252		$ 6,294		0
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.79%	[8],[13]	10.67%	[7],[14],[17]
Spread		6.25%	[8],[13]	6.25%	[7],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	$ 8,787
Ending balance		8,158	[8],[13]	$ 8,787	[7],[14],[17]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund IX, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	2,019
Ending balance		1,720	[19],[32],[37],[38]	2,019	[18],[34],[35],[36]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	1,037
Ending balance		899	[19],[32],[37],[38]	1,037	[18],[34],[35],[36]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	2,092
Ending balance		1,918	[19],[32],[37],[38]	2,092	[18],[34],[35],[36]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund X, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	9,351
Ending balance		5,858	[19],[32],[37],[38]	9,351	[18],[34],[35],[36]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund II, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	1,688
Ending balance		1,413	[19],[32],[37],[38]	1,688	[34],[35],[36]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund III, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	5,718
Ending balance		$ 4,056	[19],[32],[37],[38]	$ 5,718	[18],[34],[35],[36]
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			11.68%
Spread		5.50%	[11],[12],[13]	6.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 131
Ending balance		$ 0	[11],[12],[13]	$ 131	[14],[15],[17]
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.98%	[11],[13]	10.92%	[14],[15],[17]
Spread		6.50%	[11],[13]	6.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 16,338
Ending balance		16,134	[11],[13]	$ 16,338	[14],[15],[17]
Investment, Identifier [Axis]: Escalent, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 730
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (35)
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.45%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 26,313
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.61%	[11],[13]	10.67%	[15],[17],[28]
Spread		7.00%	[11],[13]	7.00%	[15],[17],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[28]	$ 3,507
Ending balance		$ 3,626	[11],[13]	$ 3,507	[15],[17],[28]
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.61%	[11],[13]	10.67%	[15],[17],[28]
Spread		7.00%	[11],[13]	7.00%	[15],[17],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[28]	$ 42,083
Ending balance		43,373	[11],[13]	$ 42,083	[15],[17],[28]
Investment, Identifier [Axis]: Fidelity Government Fund
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[46]	1,678
Investment, Identifier [Axis]: Fidelity Treasury
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[47]	70
Investment, Identifier [Axis]: Flame King Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		10,320		7,180
Amount of Interest, Fees or Dividends Credited to Income		3,257		2,153
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,580	[18]	10,400
Gross Additions		10,320		7,180
Gross Reductions		0		0
Ending balance		$ 27,900	[19]	$ 17,580	[18]	10,400
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[17]			10.75%
Spread		6.50%		6.50%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(60)		60
Amount of Interest, Fees or Dividends Credited to Income		484		669
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,600	[17]	6,324
Gross Additions		60		1,276
Gross Reductions		7,660		0
Ending balance		$ 0		$ 7,600	[17]	6,324
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[17]			13.25%
Spread		9.00%		9.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(162)		162
Amount of Interest, Fees or Dividends Credited to Income		1,583		2,739
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,200	[17]	20,996
Gross Additions		162		204
Gross Reductions		21,362		0
Ending balance		0		$ 21,200	[17]	20,996
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			11.21%
Spread	[14],[15],[17]			7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	736
Ending balance	[14],[15],[17]			$ 736
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			12.19%
Spread	[14],[15],[17]			7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	11,095
Ending balance	[14],[15],[17]			$ 11,095
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport Financial SBIC Fund LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	3,483
Ending balance		3,012	[32],[37],[38]	3,483	[34],[35],[36]
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport First Lien Loan Fund III LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	5,848
Ending balance		3,704	[19],[32],[37],[38]	5,848	[18],[34],[35],[36]
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport Financial SBIC Fund LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(128)
Amount of Interest, Fees or Dividends Credited to Income				3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,483		6,078
Gross Additions				0
Gross Reductions				2,595
Ending balance				3,483		6,078
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport First Lien Loan Fund III LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(57)
Amount of Interest, Fees or Dividends Credited to Income		598		442
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,848		7,231
Gross Additions		0		0
Gross Reductions		2,144		1,383
Ending balance		3,704		5,848		7,231
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport First Lien Loan Fund LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		177
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,483
Gross Additions		177
Gross Reductions		648
Ending balance		3,012		3,483
Investment, Identifier [Axis]: Fuse, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	0
Ending balance		$ 0	[8]	$ 0	[7]
Investment, Identifier [Axis]: Fuse, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%	[8]	12.00%	[7]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	$ 1,512
Ending balance		1,320	[8]	$ 1,512	[7]
Investment, Identifier [Axis]: GFG Group, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		4,320
Amount of Interest, Fees or Dividends Credited to Income		802
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,140
Gross Additions		4,320
Gross Reductions		0
Ending balance		$ 11,460	[19]	7,140
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(33)
Amount of Interest, Fees or Dividends Credited to Income		988
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,345
Gross Additions		33
Gross Reductions		2,033
Ending balance		9,345		11,345
Investment, Identifier [Axis]: GFG Group, LLC., Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				150
Amount of Interest, Fees or Dividends Credited to Income				577
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,140	[18]	6,990
Gross Additions				150
Gross Reductions				0
Ending balance				$ 7,140	[18]	6,990
Investment, Identifier [Axis]: GFG Group, LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate				9.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(34)
Amount of Interest, Fees or Dividends Credited to Income				1,248
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,345		12,545
Gross Additions				34
Gross Reductions				1,234
Ending balance				11,345		12,545
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(1,750)
Amount of Interest, Fees or Dividends Credited to Income		183		2,525
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		44,440	[18]	46,190
Gross Additions		0		0
Gross Reductions		0		1,750
Ending balance		$ 44,440		$ 44,440	[18]	46,190
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.48%		10.12%
Spread		6.00%		6.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		6		0
Amount of Interest, Fees or Dividends Credited to Income		177		25
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		670		0
Gross Additions		1,730		670
Gross Reductions		0		0
Ending balance		$ 2,400		$ 670		0
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.48%		12.12%
Spread		8.00%		8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(47)		(33)
Amount of Interest, Fees or Dividends Credited to Income		5,428		3,973
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		40,493		38,885
Gross Additions		47		1,641
Gross Reductions		47		33
Ending balance		$ 40,493		$ 40,493		38,885
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.96%	[11],[13],[48]	11.20%	[15],[17]
Spread		6.50%	[11],[13],[48]	6.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 2,171
Ending balance		$ 1,545	[11],[13],[48]	$ 2,171	[15],[17]
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[15],[17]			11.24%
Spread		6.50%	[11],[12],[13]	6.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 10,705
Ending balance		$ (9)	[11],[12],[13]	$ 10,705	[15],[17]
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.96%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 10,624
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.96%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 952
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.96%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 227
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.28%	[11],[13],[49]	10.42%	[14],[15],[17]
Spread		5.75%	[11],[13],[49]	6.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 252
Ending balance		$ 454	[11],[13],[49]	$ 252	[14],[15],[17]
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.38%
Spread		5.75%	[11],[13]	6.00%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (15)
Ending balance		$ 301	[11],[13]	$ (15)	[14],[15],[16],[17]
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.25%	[11],[13]	10.73%	[14],[15],[17]
Spread		5.75%	[11],[13]	6.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 3,661
Ending balance		3,615	[11],[13]	$ 3,661	[14],[15],[17]
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		45,820		1,190
Amount of Interest, Fees or Dividends Credited to Income		5,961		895
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		50,890	[18]	49,700
Gross Additions		45,820		1,190
Gross Reductions		0		0
Ending balance		$ 96,710	[19]	$ 50,890	[18]	49,700
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.50%	[12],[13],[23]	8.50%	[14],[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		6		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[14],[16],[17]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13],[23]	$ 0	[14],[16],[17]	0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.50%	[13],[23]	11.50%	[14],[17]
Spread		7.50%	[13],[23]	8.50%	[14],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(128)		393
Amount of Interest, Fees or Dividends Credited to Income		6,684		1,152
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		64,078	[14],[17]	0
Gross Additions		128		64,078
Gross Reductions		10,128		0
Ending balance		54,078	[13],[23]	$ 64,078	[14],[17]	0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Spread				7.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(63)
Amount of Interest, Fees or Dividends Credited to Income				2,233
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		21,598
Gross Additions				0
Gross Reductions				21,598
Ending balance				0		21,598
Investment, Identifier [Axis]: Garreco, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(220)		(470)
Amount of Interest, Fees or Dividends Credited to Income		11		240
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,800	[18]	2,270
Gross Additions		0		0
Gross Reductions		220		470
Ending balance		$ 1,580		$ 1,800	[18]	2,270
Investment, Identifier [Axis]: Garreco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.50%	[13],[50]	9.50%	[17],[51]
Spread		8.00%	[13],[50]	8.00%	[17],[51]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		390		383
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,826	[17],[51]	4,196
Gross Additions		0		0
Gross Reductions		738		370
Ending balance		3,088	[13],[50]	$ 3,826	[17],[51]	4,196
Investment, Identifier [Axis]: Garyline, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 706
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (256)
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.22%
Spread	[11],[13]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 31,529
Investment, Identifier [Axis]: GeoStabilization International (GSI), Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14]			9.44%
Spread	[7],[14]			5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14]	19,472
Ending balance	[7],[14]			$ 19,472
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		2,280		1,150
Amount of Interest, Fees or Dividends Credited to Income		2,832		1,715
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,790	[18]	5,640
Gross Additions		2,280		1,150
Gross Reductions		0		0
Ending balance		9,070	[19]	6,790	[18]	5,640
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		0		0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(1,320)		(1,820)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,780		0
Gross Additions		0		5,600
Gross Reductions		1,320		1,820
Ending balance		$ 2,460		$ 3,780		0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.50%	[12],[13]	9.50%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	257
Gross Additions		0		0
Gross Reductions		0		257
Ending balance		$ 0	[12],[13]	$ 0	[16],[17]	257
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 2,284
Ending balance		$ 2,284		$ 2,284
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		304
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,284
Gross Additions		0
Gross Reductions		0
Ending balance		2,284		$ 2,284
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2.2
Schedule of Investments [Line Items]
PIK Rate				6.25%
Amount of Realized Gain/(Loss)				$ (5,822)
Amount of Unrealized Gain/(Loss)				3,848
Amount of Interest, Fees or Dividends Credited to Income				503
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		9,717
Gross Additions				0
Gross Reductions				9,717
Ending balance				$ 0		9,717
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(116)
Amount of Interest, Fees or Dividends Credited to Income				77
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 2,284		0
Gross Additions				2,400
Gross Reductions				116
Ending balance				$ 2,284		0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.34%	[11],[13],[25]	14.34%	[14],[15],[17]
Spread		9.50%	[11],[13],[25]	9.50%	[14],[15],[17]
PIK Rate		14.34%	[11],[13],[25]	2.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 311
Ending balance		$ 336	[11],[13],[25]	$ 311	[14],[15],[17]
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.34%	[11],[13],[25]	14.34%	[14],[15],[17]
Spread		9.50%	[11],[13],[25]	9.50%	[14],[15],[17]
PIK Rate		14.34%	[11],[13],[25]	2.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 3,186
Ending balance		$ 3,406	[11],[13],[25]	$ 3,186	[14],[15],[17]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[11],[12],[13]	6.50%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (62)
Ending balance		$ (48)	[11],[12],[13]	$ (62)	[14],[15],[16],[17]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.86%
Spread		6.50%	[11],[13]	6.50%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (62)
Ending balance		$ 6,733	[11],[13]	$ (62)	[14],[15],[16],[17]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.86%	[11],[13]	10.62%	[14],[15],[17]
Spread		6.50%	[11],[13]	6.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 16,791
Ending balance		$ 16,622	[11],[13]	$ 16,791	[14],[15],[17]
Investment, Identifier [Axis]: HOWLCO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.53%	[8],[13],[32],[33]	10.69%	[7],[17],[34],[52]
Spread		6.00%	[8],[13],[32],[33]	6.00%	[7],[17],[34],[52]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17],[34],[52]	$ 24,381
Ending balance		24,397	[8],[13],[32],[33]	$ 24,381	[7],[17],[34],[52]
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		469
Amount of Interest, Fees or Dividends Credited to Income		130
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,400
Gross Additions		469
Gross Reductions		0
Ending balance		1,869		1,400
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,400		0
Gross Additions				1,400
Gross Reductions				0
Ending balance				1,400		0
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		779
Amount of Unrealized Gain/(Loss)		156		254
Amount of Interest, Fees or Dividends Credited to Income		4		(48)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,331		4,712
Gross Additions		403		1,033
Gross Reductions		509		1,414
Ending balance		4,225		4,331		4,712
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 4, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,332		0
Gross Additions		1,441		2,332
Gross Reductions		0		0
Ending balance		3,773		2,332		0
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 HPP-MS, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	248
Ending balance		315	[32],[37],[38]	248	[34],[35],[36]
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 MH, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	7,552
Ending balance		6,050	[19],[32],[37],[38]	7,552	[34],[35],[36]
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[19],[32],[37],[38]	1,869
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	1,400
Ending balance	[34],[35],[36]			1,400
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 HAR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[32],[37],[38]	996
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 3, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	4,331
Ending balance		4,225	[32],[37],[38]	4,331	[34],[35],[36]
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 4, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[35],[36]	2,332
Ending balance		3,773	[32],[37],[38]	2,332	[34],[35],[36]
Investment, Identifier [Axis]: Harrison Hydra-Gen, Ltd., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		1,380		(250)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,280		3,530
Gross Additions		1,380		0
Gross Reductions		0		250
Ending balance		4,660		3,280		3,530
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		2,780
Amount of Interest, Fees or Dividends Credited to Income		293		803
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,460	[18]	14,680
Gross Additions		0		2,780
Gross Reductions		0		0
Ending balance		17,460		17,460	[18]	14,680
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		150
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		920	[28]	770
Gross Additions		0		150
Gross Reductions		0		0
Ending balance		$ 920	[29]	$ 920	[28]	770
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.65%	[13]	10.13%	[17]
Spread		6.00%	[13]	6.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1)		3
Amount of Interest, Fees or Dividends Credited to Income		317		230
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,185	[17]	2,585
Gross Additions		6,037		600
Gross Reductions		7,248		0
Ending balance		$ 1,974	[13]	$ 3,185	[17]	2,585
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(4)		(13)
Amount of Interest, Fees or Dividends Credited to Income		5,094		3,054
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		37,800		34,800
Gross Additions		7,460		3,013
Gross Reductions		4		13
Ending balance		45,256		$ 37,800		34,800
Investment, Identifier [Axis]: Heartland Dental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[17]			10.88%
Spread	[15],[17]			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	13,599
Ending balance	[15],[17]			$ 13,599
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		940		(810)
Amount of Interest, Fees or Dividends Credited to Income		84		17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,400		3,210
Gross Additions		940		0
Gross Reductions		0		810
Ending balance		$ 3,340	[19]	$ 2,400		3,210
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(120)		40
Amount of Interest, Fees or Dividends Credited to Income		243		243
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,000		2,960
Gross Additions		0		40
Gross Reductions		120		0
Ending balance		$ 2,880		$ 3,000		2,960
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.91%	[11],[13]	12.07%	[14],[15]
Spread		8.25%	[11],[13]	8.25%	[14],[15]
PIK Rate	[11],[13]	2.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,144
Ending balance		6,581	[11],[13]	$ 6,144	[14],[15]
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Schedule of Investments [Line Items]
Diluted, percentage (as a percent)	[34],[36]			20.00%
Profits, percentage (as a percent)	[34],[36]			21.75%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(2,629)
Amount of Interest, Fees or Dividends Credited to Income				2,028
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 11,758	[18],[34],[36]	14,387
Gross Additions				0
Gross Reductions				2,629
Ending balance				11,758	[18],[34],[36]	14,387
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Schedule of Investments [Line Items]
Diluted, percentage (as a percent)	[32],[38]	20.00%
Profits, percentage (as a percent)	[32],[38]	21.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		532
Amount of Interest, Fees or Dividends Credited to Income		2,317
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,758
Gross Additions		1,732
Gross Reductions		0
Ending balance		13,490	[19],[32],[38]	11,758
Investment, Identifier [Axis]: IG Investor, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		15,096
Gross Reductions		696
Ending balance		14,400		0
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		98
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		765
Gross Reductions		800
Ending balance		$ (35)	[12]	0
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		3,428
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		37,374
Gross Reductions		440
Ending balance		$ 36,934		$ 0
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17],[53]			10.17%
Spread		5.75%	[8],[12],[13]	5.75%	[7],[14],[17],[53]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17],[53]	$ 698
Ending balance		$ 0	[8],[12],[13]	$ 698	[7],[14],[17],[53]
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.96%	[8],[13]	10.17%	[7],[14],[17]
Spread		5.50%	[8],[13]	5.75%	[7],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	$ 14,499
Ending balance		$ 9,399	[8],[13]	$ 14,499	[7],[14],[17]
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[13]	10.96%
Spread	[8],[13]	5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 4,953
Investment, Identifier [Axis]: INW Manufacturing, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.36%	[8],[13]	10.48%	[7],[17]
Spread		5.75%	[8],[13]	5.75%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 6,092
Ending balance		$ 5,325	[8],[13]	$ 6,092	[7],[17]
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13]	16.59%
Spread	[13]	9.00%
PIK Rate	[13]	2.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		20
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		816
Gross Reductions		0
Ending balance		$ 816	[13]	0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[13]	16.59%
Spread	[13]	9.00%
PIK Rate	[13]	2.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		34
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		697
Gross Reductions		0
Ending balance		$ 697	[13]	0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[13]	15.59%
Spread	[13]	8.00%
PIK Rate	[13]	2.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		560
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		3,430
Gross Reductions		0
Ending balance		$ 3,430	[13]	0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[13]	17.59%
Spread	[13]	10.00%
PIK Rate	[13]	2.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		607
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		3,430
Gross Reductions		0
Ending balance		3,430	[13]	0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		2,091
Gross Reductions		0
Ending balance		2,091	[10]	$ 0
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 1,110
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[54]	12.41%
Spread	[11],[13],[54]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[54]	$ 1,571
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.45%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 20,637
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.25%	[11],[13]	13.98%	[15],[17]
Spread		7.75%	[11],[13]	7.75%	[15],[17]
PIK Rate		1.00%	[11],[13]	1.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 17,464
Ending balance		17,334	[11],[13]	$ 17,464	[15],[17]
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(610)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		18,300
Gross Reductions		610
Ending balance		17,690	[11]	0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance	[15]			$ 0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 1
Schedule of Investments [Line Items]
Total Rate	[15]			6.00%
PIK Rate	[15]			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance	[15]			$ 0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance	[15]			$ 0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15]			14.42%
Spread	[14],[15]			10.00%
PIK Rate	[14],[15]			14.42%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	769
Ending balance	[14],[15]			$ 769
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[15],[17],[55]			13.00%
Spread	[15],[17],[55]			5.50%
PIK Rate	[15],[17],[55]			13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[55]	7,027
Ending balance	[15],[17],[55]			$ 7,027
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[15],[20]			6.00%
PIK Rate	[15],[20]			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[20]	7,633
Ending balance	[15],[20]			$ 7,633
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[56]	0
Ending balance	[15],[16],[56]			0
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[28]	600
Ending balance		$ 690	[11],[29]	$ 600	[15],[28]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		10.00%	[11],[19],[29]	10.00%	[15],[18],[28]
PIK Rate		10.00%	[11],[19],[29]	10.00%	[15],[18],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18],[28]	$ 145
Ending balance		$ 178	[11],[19],[29]	$ 145	[15],[18],[28]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate		20.00%	[11],[19],[29]	20.00%	[15],[18],[28]
PIK Rate		20.00%	[11],[19],[29]	20.00%	[15],[18],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18],[28]	$ 93
Ending balance		$ 120	[11],[19],[29]	$ 93	[15],[18],[28]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.22%	[11],[13],[57]	11.50%	[15],[17]
Spread		6.75%	[11],[13],[57]	6.75%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 463
Ending balance		$ 1,390	[11],[13],[57]	$ 463	[15],[17]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.22%	[11],[13]	11.50%	[15],[17]
Spread		6.75%	[11],[13]	6.75%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 19,239
Ending balance		19,044	[11],[13]	$ 19,239	[15],[17]
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		4,000
Gross Reductions		0
Ending balance		$ 4,000		0
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		1,985
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		17,853
Gross Reductions		450
Ending balance		$ 17,403		$ 0
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.21%
Spread		5.75%	[11],[13]	5.50%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (19)
Ending balance		$ 1,504	[11],[13]	$ (19)	[15],[16],[17]
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.21%	[11],[13]	10.23%	[15],[17]
Spread		5.75%	[11],[13]	5.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 8,593
Ending balance		7,752	[11],[13]	$ 8,593	[15],[17]
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 656
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (70)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (57)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.65%
Spread	[11],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 14,258
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 240
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[58]	13.53%
Spread	[11],[13],[58]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[58]	$ 776
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.55%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 7,177
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.55%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 2,887
Investment, Identifier [Axis]: Integral Energy Services, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(1,120)
Amount of Interest, Fees or Dividends Credited to Income		43
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,280
Gross Additions		0
Gross Reductions		1,120
Ending balance		$ 160	[11]	1,280
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[11]	10.00%
PIK Rate	[11]	10.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		73
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		300
Gross Reductions		0
Ending balance		$ 300	[11]	0
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.16%
Spread	[11],[13]	7.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(674)
Amount of Interest, Fees or Dividends Credited to Income		2,374
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,769
Gross Additions		80
Gross Reductions		1,958
Ending balance		13,891	[11],[13]	15,769
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	0
Ending balance		$ 0	[11]	$ 0	[15]
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.48%	[11],[25],[59]	14.22%	[15],[60]
Spread		10.00%	[11],[25],[59]	10.00%	[15],[60]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[60]	$ 1,682
Ending balance		$ 1,781	[11],[25],[59]	$ 1,682	[15],[60]
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.46%	[11],[13],[21],[25]	12.07%	[15],[17],[20]
Spread		7.00%	[11],[13],[21],[25]	7.00%	[15],[17],[20]
PIK Rate		12.46%	[11],[13],[21],[25]	1.00%	[15],[17],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[20]	$ 1,082
Ending balance		$ 431	[11],[13],[21],[25]	$ 1,082	[15],[17],[20]
Investment, Identifier [Axis]: Intermedia Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.47%	[8],[13]	10.38%	[7],[17]
Spread		6.00%	[8],[13]	6.00%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 15,811
Ending balance		$ 19,570	[8],[13]	$ 15,811	[7],[17]
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[11],[13]	10.14%	[15],[17]
Spread		6.50%	[11],[13]	6.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 622
Ending balance		$ 509	[11],[13]	$ 622	[15],[17]
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[11],[13]	10.17%	[15],[17]
Spread		6.50%	[11],[13]	6.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 16,889
Ending balance		16,515	[11],[13]	$ 16,889	[15],[17]
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(76)		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,798		1,798
Gross Additions		958		0
Gross Reductions		76		0
Ending balance		$ 2,680		$ 1,798		1,798
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		622		591
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,500		4,557
Gross Additions		7		10
Gross Reductions		20		67
Ending balance		$ 4,487		$ 4,500		4,557
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		547		411
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,130		3,170
Gross Additions		6		7
Gross Reductions		214		47
Ending balance		$ 2,922		$ 3,130		3,170
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		1,217		1,134
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,944		8,944
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 8,944		$ 8,944		8,944
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2,706		2,572
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,559		19,805
Gross Additions		32		42
Gross Reductions		88		288
Ending balance		$ 19,503		19,559		19,805
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		1,806
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		10,911
Gross Reductions		638
Ending balance		10,273		$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.04%	[8],[13]	9.93%	[7],[17],[20]
Spread		5.50%	[8],[13]	7.75%	[7],[17],[20]
PIK Rate	[8],[13]	8.54%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17],[20]	$ 1,537
Ending balance		2,301	[8],[13]	$ 1,537	[7],[17],[20]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	2,840
Ending balance		$ 1,710	[11]	$ 2,840	[15]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[61]	11.64%
Spread		6.00%	[11],[13],[61]	6.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (135)
Ending balance		$ 3,137	[11],[13],[61]	$ (135)	[15],[16],[17]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.61%	[11],[13]	10.73%	[15],[17]
Spread		6.00%	[11],[13]	6.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 36,947
Ending balance		36,000	[11],[13]	$ 36,947	[15],[17]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[15],[18]			12.00%
PIK Rate	[15],[18]			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18]	623
Ending balance		$ 1,090	[11]	$ 623	[15],[18]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.46%	[11],[13],[62]	12.23%	[15],[17]
Spread		7.00%	[11],[13],[62]	7.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 500
Ending balance		$ 835	[11],[13],[62]	$ 500	[15],[17]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.46%	[11],[13]	12.23%	[15],[17]
Spread		7.00%	[11],[13]	7.50%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 2,079
Ending balance		1,974	[11],[13]	$ 2,079	[15],[17]
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(2,550)		2,550
Amount of Interest, Fees or Dividends Credited to Income		1,362		2,784
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,970	[18]	12,420
Gross Additions		0		2,550
Gross Reductions		2,550		0
Ending balance		$ 12,420	[19]	14,970	[18]	12,420
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%
Spread		6.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(6)
Amount of Interest, Fees or Dividends Credited to Income		356
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,450
Gross Additions		6
Gross Reductions		458
Ending balance		$ 1,998		$ 2,450
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[12],[25]	6.75%	[16]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[25]	$ 0	[16]	0
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%	[13],[25]	13.75%	[17]
Spread		6.75%	[13],[25]	6.75%	[17]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(8)
Amount of Interest, Fees or Dividends Credited to Income				292
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 2,450	[17]	2,550
Gross Additions				8
Gross Reductions				108
Ending balance		1,998	[13],[25]	2,450	[17]	2,550
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	0
Ending balance		$ 0	[8],[21]	$ 0	[7]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		23.63%	[8],[13],[21]	18.00%	[7]
Spread	[8],[13],[21]	18.00%
PIK Rate	[8],[13],[21]	23.63%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	$ 2,297
Ending balance		$ 2,074	[8],[13],[21]	$ 2,297	[7]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		21.63%	[8],[13],[21]	19.75%	[7],[20]
Spread	[8],[13],[21]	16.00%
PIK Rate		21.63%	[8],[13],[21]	19.75%	[7],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[20]	$ 504
Ending balance		$ 143	[8],[13],[21]	$ 504	[7],[20]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[13],[21]	21.63%
Spread	[8],[13],[21]	16.00%
PIK Rate	[8],[13],[21]	21.63%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13],[21]	$ 137
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		3,595		2,390
Amount of Interest, Fees or Dividends Credited to Income		189		1,062
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,540	[18]	3,150
Gross Additions		4,080		2,390
Gross Reductions		0		0
Ending balance		$ 9,620		$ 5,540	[18]	3,150
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%
Spread	[16],[17]			11.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		3		14
Amount of Interest, Fees or Dividends Credited to Income		24		13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	(18)
Gross Additions		0		18
Gross Reductions		0		0
Ending balance		$ 0	[12]	$ 0	[16],[17]	(18)
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%		15.63%	[17]
Spread	[17]			11.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		63		79
Amount of Interest, Fees or Dividends Credited to Income		1,888		1,503
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,999	[17]	11,362
Gross Additions		14,850		114
Gross Reductions		642		1,477
Ending balance		24,207		9,999	[17]	11,362
Investment, Identifier [Axis]: JorVet Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		825		922
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,741	[18]	0
Gross Additions		0		10,741
Gross Reductions		0		0
Ending balance		$ 10,741	[19]	$ 10,741	[18]	0
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		3,172		2,680
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,432		0
Gross Additions		51		25,432
Gross Reductions		0		0
Ending balance		25,483		25,432		0
Investment, Identifier [Axis]: KBK Industries, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		7,200		1,950
Amount of Interest, Fees or Dividends Credited to Income		9,614		1,671
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,570	[18]	13,620
Gross Additions		7,200		1,950
Gross Reductions		0		0
Ending balance		$ 22,770	[19]	15,570	[18]	13,620
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		38
Amount of Interest, Fees or Dividends Credited to Income		562
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		6,000
Gross Reductions		1,300
Ending balance		$ 4,700		$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.75%	[11],[13]	12.00%	[15],[17]
Spread		9.25%	[11],[13]	7.25%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 995
Ending balance		$ 943	[11],[13]	$ 995	[15],[17]
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.75%	[11],[13]	12.00%	[15],[17]
Spread		9.25%	[11],[13]	7.25%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 7,022
Ending balance		6,782	[11],[13]	$ 7,022	[15],[17]
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(120)
Amount of Interest, Fees or Dividends Credited to Income		115
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[28]	2,850
Gross Additions		0
Gross Reductions		120
Ending balance		2,730	[29]	2,850	[18],[28]
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				390
Amount of Interest, Fees or Dividends Credited to Income				113
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,850		2,460
Gross Additions				390
Gross Reductions				0
Ending balance				2,850		2,460
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		2,470		(5,090)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,220		12,310
Gross Additions		2,470		0
Gross Reductions		0		5,090
Ending balance		$ 9,690		$ 7,220		12,310
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		11.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2,642		2,430
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,374		20,324
Gross Additions		201		50
Gross Reductions		801		0
Ending balance		$ 19,774		$ 20,374		20,324
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.00%		9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		349		352
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,842		3,876
Gross Additions		2		2
Gross Reductions		39		36
Ending balance		3,805		$ 3,842		3,876
Investment, Identifier [Axis]: Kore Wireless Group Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14]			10.08%
Spread	[7],[14]			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14]	10,930
Ending balance	[7],[14]			$ 10,930
Investment, Identifier [Axis]: L.F. Manufacturing Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				617
Amount of Unrealized Gain/(Loss)				(541)
Amount of Interest, Fees or Dividends Credited to Income				224
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		2,560
Gross Additions				617
Gross Reductions				3,177
Ending balance				$ 0		2,560
Investment, Identifier [Axis]: L.F. Manufacturing Holdings, LLC, Preferred Member Units (non-voting)
Schedule of Investments [Line Items]
PIK Rate				14.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		107
Gross Additions				10
Gross Reductions				117
Ending balance				0		107
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P., LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	3,197
Ending balance		$ 2,988	[32],[37],[38]	$ 3,197	[18],[34],[35],[36]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.71%	[11],[13]	11.21%	[14],[15],[17]
Spread		7.25%	[11],[13]	7.25%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 8,047
Ending balance		$ 7,960	[11],[13]	$ 8,047	[14],[15],[17]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.71%	[11],[13]	11.67%	[14],[15],[17]
Spread		7.25%	[11],[13]	7.25%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 9,130
Ending balance		$ 5,246	[11],[13]	$ 9,130	[14],[15],[17]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.71%	[11],[13]	11.67%	[14],[15],[17]
Spread		7.25%	[11],[13]	7.25%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 10,749
Ending balance		$ 2,803	[11],[13]	$ 10,749	[14],[15],[17]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.71%
Spread	[11],[13]	7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 1,056
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.71%
Spread	[11],[13]	7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 10,694
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.54%	[11],[13]	12.74%	[15],[17]
Spread		9.00%	[11],[13]	9.00%	[15],[17]
PIK Rate	[11],[13]	1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 4,350
Ending balance		$ 3,979	[11],[13]	$ 4,350	[15],[17]
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.62%	[8]	9.73%	[7]
Spread		5.00%	[8]	5.00%	[7]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	$ 13,968
Ending balance		$ 13,895	[8]	$ 13,968	[7]
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.25%	[11],[13]	10.13%	[15],[17]
Spread		4.75%	[11],[13]	5.75%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 16,221
Ending balance		18,778	[11],[13]	$ 16,221	[15],[17]
Investment, Identifier [Axis]: Looking Glass Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34],[36]	25
Ending balance		$ 25	[32],[38]	$ 25	[34],[36]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.46%	[8],[13]	10.42%	[7],[14],[17]
Spread		6.00%	[8],[13]	6.00%	[7],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	$ 8,338
Ending balance		$ 2,803	[8],[13]	$ 8,338	[7],[14],[17]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.46%	[8],[13]	10.42%	[7],[14],[17]
Spread		6.00%	[8],[13]	6.00%	[7],[14],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	$ 7,876
Ending balance		$ 3,925	[8],[13]	$ 7,876	[7],[14],[17]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[13]	11.46%
Spread	[8],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 3,464
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[8],[13]	11.46%
Spread	[8],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 7,796
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		330		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		330		0
Gross Reductions		0		0
Ending balance		330		0		0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%	[25]	13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		1,229		699
Amount of Interest, Fees or Dividends Credited to Income		761		999
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,548		5,934
Gross Additions		1,229		708
Gross Reductions		755		2,094
Ending balance		5,022	[25]	4,548		5,934
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				502
Amount of Interest, Fees or Dividends Credited to Income				742
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,833		2,581
Gross Additions				12,252
Gross Reductions				0
Ending balance				14,833		2,581
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				431
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		63,151
Gross Additions				13,700
Gross Reductions				76,851
Ending balance				0		63,151
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(306)
Amount of Interest, Fees or Dividends Credited to Income		1,746
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[34],[35],[36]	14,833
Gross Additions		0
Gross Reductions		306
Ending balance		$ 14,527	[19],[32],[37],[38]	14,833	[18],[34],[35],[36]
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate		5.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		25
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16],[34],[36]	0
Gross Additions		0
Gross Reductions		0
Ending balance		0	[12],[32],[38]	0	[16],[34],[36]
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions				5,300
Gross Reductions				5,300
Ending balance				0		0
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		1,561
Gross Reductions		0
Ending balance		$ 1,561	[32],[37],[38]	0
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[32],[38]	8.88%
Spread	[13],[32],[38]	3.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		515
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		23,367
Gross Reductions		0
Ending balance		23,367	[13],[32],[38]	0
Investment, Identifier [Axis]: MSC Adviser I, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		51,133		(17,470)
Amount of Interest, Fees or Dividends Credited to Income		11,310		9,297
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		122,930	[18],[63]	140,400
Gross Additions		51,133		0
Gross Reductions		0		17,470
Ending balance		174,063	[19],[64]	122,930	[18],[63]	140,400
Investment, Identifier [Axis]: MSC Income Fund, Inc., Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		22		3
Amount of Interest, Fees or Dividends Credited to Income		236		30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		753	[18],[34],[36]	0
Gross Additions		9,272		753
Gross Reductions		0		0
Ending balance		$ 10,025	[19],[32],[38]	$ 753	[18],[34],[36]	0
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[15],[17],[65]			11.79%
Spread		6.75%	[11],[12],[13]	7.25%	[15],[17],[65]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[65]	$ 3,083
Ending balance		$ 0	[11],[12],[13]	$ 3,083	[15],[17],[65]
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.28%	[11],[13]	11.09%	[15],[17]
Spread		6.75%	[11],[13]	7.25%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 15,224
Ending balance		15,049	[11],[13]	$ 15,224	[15],[17]
Investment, Identifier [Axis]: Market Force Information, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(16,642)		0
Amount of Unrealized Gain/(Loss)		16,642		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		16,642		0
Gross Reductions		16,642		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[17]			15.13%
Spread		11.00%		11.00%	[17]
Amount of Realized Gain/(Loss)		$ (6,662)		$ 0
Amount of Unrealized Gain/(Loss)		163		(163)
Amount of Interest, Fees or Dividends Credited to Income		453		592
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,090	[17]	3,400
Gross Additions		804		2,853
Gross Reductions		6,894		163
Ending balance		$ 0		$ 6,090	[17]	3,400
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20]			12.00%
Spread		11.00%
PIK Rate	[20]			12.00%
Amount of Realized Gain/(Loss)		$ (25,952)		$ 0
Amount of Unrealized Gain/(Loss)		24,342		(7,325)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,610	[20]	8,936
Gross Additions		24,342		0
Gross Reductions		25,952		7,326
Ending balance		0		1,610	[20]	8,936
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,537		0
Gross Additions				1,537
Gross Reductions				0
Ending balance				$ 1,537		0
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[18]			8.00%
PIK Rate	[18]			8.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				95
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,010	[18]	0
Gross Additions				6,010
Gross Reductions				0
Ending balance				6,010	[18]	0
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0	[16]	0
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				12.75%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				1,143
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,576		0
Gross Additions				23,576
Gross Reductions				0
Ending balance				23,576		0
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(37)
Amount of Interest, Fees or Dividends Credited to Income		522
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,537
Gross Additions		0
Gross Reductions		37
Ending balance		$ 1,500		1,537
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[19]	8.00%
PIK Rate	[19]	8.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		505
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,010
Gross Additions		473
Gross Reductions		448
Ending balance		$ 6,035	[19]	6,010
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0	[12]	0
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		3,092
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,576
Gross Additions		47
Gross Reductions		0
Ending balance		$ 23,623		$ 23,576
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[13]	6.25%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (63)
Ending balance		$ (51)	[11],[12],[13]	$ (63)	[14],[15],[16],[17]
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.46%	[11],[13]	9.86%	[14],[15],[17]
Spread		6.00%	[11],[13]	6.25%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 25,181
Ending balance		$ 22,168	[11],[13]	$ 25,181	[14],[15],[17]
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.52%	[11],[13]	10.66%	[15],[17]
Spread		7.00%	[11],[13]	6.25%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 18,338
Ending balance		17,524	[11],[13]	$ 18,338	[15],[17]
Investment, Identifier [Axis]: Mini Melts of America, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 460
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (42)
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (16)
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	10.64%
Spread	[11],[13]	5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 4,825
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.64%
Spread	[11],[13]	7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 4,820
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[34],[52]	889
Ending balance		$ 678	[11],[32],[33]	$ 889	[15],[34],[52]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[32],[33]	14.00%
Spread	[15],[16],[17],[34],[52]			7.00%
PIK Rate	[11],[32],[33]	4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17],[34],[52]	$ (64)
Ending balance		$ 3,938	[11],[32],[33]	$ (64)	[15],[16],[17],[34],[52]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[32],[33]	11.73%	[15],[17],[34],[52]
Spread	[15],[17],[34],[52]			7.00%
PIK Rate	[11],[32],[33]	4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[34],[52]	$ 10,714
Ending balance		$ 11,164	[11],[32],[33]	$ 10,714	[15],[17],[34],[52]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[32],[33]	11.73%	[15],[17],[34],[52]
Spread	[15],[17],[34],[52]			7.00%
PIK Rate	[11],[32],[33]	4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[34],[52]	$ 17,038
Ending balance		17,213	[11],[32],[33]	$ 17,038	[15],[17],[34],[52]
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		3,560		13,990
Amount of Interest, Fees or Dividends Credited to Income		4,523		4,202
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,830	[18]	8,840
Gross Additions		3,560		13,990
Gross Reductions		0		0
Ending balance		26,390	[19]	22,830	[18]	8,840
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		4		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12]	$ 0	[16]	0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(1)
Amount of Interest, Fees or Dividends Credited to Income		583		607
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,746		6,378
Gross Additions		0		1
Gross Reductions		0		633
Ending balance		5,746		5,746		6,378
Investment, Identifier [Axis]: NAPCO Precast, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(1,730)
Amount of Interest, Fees or Dividends Credited to Income				4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,830		13,560
Gross Additions				0
Gross Reductions				1,730
Ending balance		11,730		11,830		13,560
Investment, Identifier [Axis]: NAPCO Precast, LLC, Members Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(100)
Amount of Interest, Fees or Dividends Credited to Income		(40)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,830
Gross Additions		0
Gross Reductions		100
Ending balance		11,730		$ 11,830
Investment, Identifier [Axis]: NBG Acquisition Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[17]			9.67%
Spread	[7],[17]			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	1,251
Ending balance		115	[8],[21]	$ 1,251	[7],[17]
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	4,790
Ending balance	[18]			4,790
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(1,585)
Amount of Interest, Fees or Dividends Credited to Income				578
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,615		6,200
Gross Additions				0
Gross Reductions				1,585
Ending balance		53		4,615		6,200
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(3,148)
Amount of Interest, Fees or Dividends Credited to Income		23
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,615
Gross Additions		0
Gross Reductions		3,149
Ending balance		1,466		4,615
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(65)
Amount of Interest, Fees or Dividends Credited to Income				17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		175		240
Gross Additions				0
Gross Reductions				65
Ending balance		1,466	[19]	175		240
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(122)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		175
Gross Additions		0
Gross Reductions		122
Ending balance		$ 53		$ 175
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		253		253
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,080		2,080
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		2,080		$ 2,080		2,080
Investment, Identifier [Axis]: NTM Acquisition Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[17]			9.50%
Spread	[7],[17]			6.25%
PIK Rate	[7],[17]			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	4,228
Ending balance	[7],[17]			$ 4,228
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17],[66]			10.85%
Spread	[14],[15],[17],[66]			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[66]	3,720
Ending balance	[14],[15],[17],[66]			$ 3,720
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			12.56%
Spread	[14],[15],[17]			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	37,616
Ending balance	[14],[15],[17]			$ 37,616
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[15]			20.00%
PIK Rate	[15]			20.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	6,194
Ending balance	[15]			$ 6,194
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, , Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				66
Amount of Interest, Fees or Dividends Credited to Income				1,299
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,500		10,412
Gross Additions				88
Gross Reductions				0
Ending balance				10,500		10,412
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		7,320		0
Amount of Interest, Fees or Dividends Credited to Income		591		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,700		7,700
Gross Additions		7,320		0
Gross Reductions		0		0
Ending balance		$ 15,020	[19]	$ 7,700		7,700
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[12],[13]	7.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		10		10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ 0	[16],[17]	0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1)		122
Amount of Interest, Fees or Dividends Credited to Income		2,910		1,778
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,094		4,829
Gross Additions		5,701		15,265
Gross Reductions		1		0
Ending balance		$ 25,794		$ 20,094		4,829
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(22)
Amount of Interest, Fees or Dividends Credited to Income		1,299
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,500
Gross Additions		22
Gross Reductions		22
Ending balance		10,500		$ 10,500
Investment, Identifier [Axis]: NexRev LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		5,240		(2,913)
Amount of Interest, Fees or Dividends Credited to Income		665		81
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,110	[18]	2,690
Gross Additions		5,240		1,333
Gross Reductions		0		2,913
Ending balance		$ 6,350	[19]	1,110	[18]	2,690
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	800
Gross Additions		0		0
Gross Reductions		0		800
Ending balance		$ 0	[12]	$ 0	[16]	800
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		2,859		(729)
Amount of Interest, Fees or Dividends Credited to Income		1,143		1,923
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,477		13,245
Gross Additions		2,928		0
Gross Reductions		1,654		4,768
Ending balance		$ 9,751		$ 8,477		13,245
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]	6.25%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ 0
Ending balance		$ (8)	[11],[12],[13]	$ 0	[15],[16],[17]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]	6.25%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (38)
Ending balance		$ 0	[11],[12],[13]	$ (38)	[15],[16],[17]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.54%	[11],[13]	9.99%	[15],[17]
Spread		7.00%	[11],[13]	6.25%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 21,666
Ending balance		$ 20,467	[11],[13]	$ 21,666	[15],[17]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.52%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 7,222
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,150
Ending balance		5,150		5,150
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		1,200		(5,460)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,040		13,500
Gross Additions		1,200		0
Gross Reductions		0		5,460
Ending balance		9,240		8,040		13,500
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,040
Ending balance		9,240		8,040
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		3,088
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,150		0
Gross Additions		0		5,150
Gross Reductions		0		0
Ending balance		$ 5,150		$ 5,150		0
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.98%	[13]	10.63%	[17]
Spread		6.50%	[13]	6.50%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		474		323
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,399	[17]	1,720
Gross Additions		0		2,679
Gross Reductions		799		0
Ending balance		$ 3,600	[13]	$ 4,399	[17]	1,720
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(4)
Amount of Interest, Fees or Dividends Credited to Income		2,256		2,180
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,414		17,240
Gross Additions		12		1,178
Gross Reductions		0		4
Ending balance		18,426		18,414		17,240
Investment, Identifier [Axis]: OMi Topco, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		13,570		2,600
Amount of Interest, Fees or Dividends Credited to Income		2,700		2,154
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,810	[18]	20,210
Gross Additions		13,570		2,600
Gross Reductions		0		0
Ending balance		$ 36,380	[19]	$ 22,810	[18]	20,210
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(48)		(53)
Amount of Interest, Fees or Dividends Credited to Income		1,824		2,135
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,750		18,000
Gross Additions		48		53
Gross Reductions		3,048		2,303
Ending balance		12,750		$ 15,750		18,000
Investment, Identifier [Axis]: OVG Business Services, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[17]			10.64%
Spread	[15],[17]			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 13,094
Ending balance	[15],[17]			$ 13,094
Investment, Identifier [Axis]: Obra Capital, Inc. (f/k/a Vida Capital, Inc.), Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[8]	11.47%
Spread	[8]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	$ 14,897
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Preferred Stock
Schedule of Investments [Line Items]
Total Rate		7.00%		7.00%
PIK Rate		7.00%		7.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0		0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	[20]
PIK Rate		12.00%	[21]	12.00%	[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[20]	$ 2,606
Ending balance		$ 1,493	[21]	$ 2,606	[20]
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
PIK Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(243)		(395)
Amount of Interest, Fees or Dividends Credited to Income		0		28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		569		935
Gross Additions		0		28
Gross Reductions		243		394
Ending balance		$ 326		$ 569		935
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	[20]
PIK Rate		12.00%	[21]	12.00%	[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[20]	$ 1,249
Ending balance		$ 716	[21]	$ 1,249	[20]
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
PIK Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(248)		(403)
Amount of Interest, Fees or Dividends Credited to Income		0		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		580		954
Gross Additions		0		29
Gross Reductions		248		403
Ending balance		$ 332		$ 580		954
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	[20]
PIK Rate		12.00%	[21]	12.00%	[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[20]	$ 580
Ending balance		$ 332	[21]	$ 580	[20]
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
PIK Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(533)		(867)
Amount of Interest, Fees or Dividends Credited to Income		0		62
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,249		2,055
Gross Additions		0		62
Gross Reductions		533		868
Ending balance		$ 716		$ 1,249		2,055
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	[20]
PIK Rate		12.00%	[21]	12.00%	[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[20]	$ 569
Ending balance		$ 326	[21]	$ 569	[20]
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4.1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
PIK Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1,112)		(1,809)
Amount of Interest, Fees or Dividends Credited to Income		0		129
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,606		4,285
Gross Additions		0		129
Gross Reductions		1,113		1,808
Ending balance		$ 1,493		$ 2,606		4,285
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%	[21]	10.00%	[20]
PIK Rate		10.00%	[21]	10.00%	[20]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		305	[20]	192
Gross Additions		0		113
Gross Reductions		0		0
Ending balance		305	[21]	305	[20]	192
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[9]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0	[10]	0	[9]	0
Investment, Identifier [Axis]: Oneliance, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,056		1,056
Gross Additions		72		0
Gross Reductions		0		0
Ending balance		$ 1,128		$ 1,056		1,056
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		11.00%	[12],[13],[25]	11.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13],[25]	$ 0	[16],[17]	0
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.48%	[13]	15.13%	[17]
Spread		11.00%	[13]	11.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(61)		0
Amount of Interest, Fees or Dividends Credited to Income		914		750
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,559	[17]	5,547
Gross Additions		12		12
Gross Reductions		221		0
Ending balance		5,350	[13]	5,559	[17]	5,547
Investment, Identifier [Axis]: Orttech Holdings, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		5,300		1,750
Amount of Interest, Fees or Dividends Credited to Income		1,094		900
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,750	[18],[28]	10,000
Gross Additions		5,300		1,750
Gross Reductions		0		0
Ending balance		$ 17,050	[19],[29]	$ 11,750	[18],[28]	10,000
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		11.00%	[12],[13]	11.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	175
Gross Additions		0		0
Gross Reductions		0		175
Ending balance		$ 0	[12],[13]	$ 0	[16],[17]	175
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.48%	[13]	15.13%	[17]
Spread		11.00%	[13]	11.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		115		0
Amount of Interest, Fees or Dividends Credited to Income		3,765		3,207
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,429	[17]	23,976
Gross Additions		171		53
Gross Reductions		1,560		600
Ending balance		22,040	[13]	$ 23,429	[17]	23,976
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[20]			11.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[20]	103
Ending balance		57	[11],[21]	$ 103	[15],[20]
Investment, Identifier [Axis]: Other, Affiliate Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		0		0
Investment, Identifier [Axis]: Other, Control Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		0		0
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(1,970)		4,590
Amount of Interest, Fees or Dividends Credited to Income		(30)		1,627
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,950	[18]	14,360
Gross Additions		0		4,590
Gross Reductions		1,970		0
Ending balance		16,980		18,950	[18]	14,360
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		130		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		238		0
Gross Additions		130		238
Gross Reductions		0		0
Ending balance		$ 368	[29]	$ 238		0
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.75%	[12],[13]	7.00%	[16],[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(2)		9
Amount of Interest, Fees or Dividends Credited to Income		2		79
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[17]	727
Gross Additions		2		1,273
Gross Reductions		2		2,000
Ending balance		$ 0	[12],[13]	$ 0	[16],[17]	727
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.23%	[13]	10.25%	[17]
Spread		8.75%	[13]	7.00%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(67)		247
Amount of Interest, Fees or Dividends Credited to Income		2,845		1,714
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,655	[17]	11,655
Gross Additions		67		10,000
Gross Reductions		1,845		0
Ending balance		$ 19,877	[13]	$ 21,655	[17]	11,655
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[32],[33],[67]	12.80%
Spread		7.25%	[11],[13],[32],[33],[67]	7.25%	[14],[15],[16],[17],[34],[52]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17],[34],[52]	$ (174)
Ending balance		$ 2,998	[11],[13],[32],[33],[67]	$ (174)	[14],[15],[16],[17],[34],[52]
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.88%	[11],[13],[32],[33]	11.80%	[14],[15],[17],[34],[52]
Spread		7.25%	[11],[13],[32],[33]	7.25%	[14],[15],[17],[34],[52]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[34],[52]	$ 27,911
Ending balance		$ 26,263	[11],[13],[32],[33]	$ 27,911	[14],[15],[17],[34],[52]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			10.26%
Spread		5.75%	[11],[12],[13]	5.75%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 530
Ending balance		$ 0	[11],[12],[13]	$ 530	[14],[15],[17]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.24%	[11],[13],[68]	9.96%	[14],[15],[17],[69]
Spread		5.75%	[11],[13],[68]	5.75%	[14],[15],[17],[69]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[69]	$ 2,649
Ending balance		$ 3,186	[11],[13],[68]	$ 2,649	[14],[15],[17],[69]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.25%	[11],[13]	9.81%	[14],[15],[17]
Spread		5.75%	[11],[13]	5.75%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 17,939
Ending balance		18,490	[11],[13]	$ 17,939	[14],[15],[17]
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		830		16,290
Amount of Interest, Fees or Dividends Credited to Income		12,110		8,204
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		43,260	[18]	26,970
Gross Additions		830		16,290
Gross Reductions		0		0
Ending balance		$ 44,090	[19]	43,260	[18]	26,970
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		3
Amount of Interest, Fees or Dividends Credited to Income		370
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		3,500
Gross Reductions		0
Ending balance		$ 3,500		0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				31
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 0	[16]	0
Gross Additions				1,500
Gross Reductions				1,500
Ending balance		$ 3,500		0	[16]	0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		44
Amount of Interest, Fees or Dividends Credited to Income		1,552
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		20,000
Gross Reductions		0
Ending balance		$ 20,000		0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 0	[16]	0
Gross Additions				0
Gross Reductions				0
Ending balance		$ 20,000		0	[16]	0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(65)
Amount of Interest, Fees or Dividends Credited to Income		3,450
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		28,681
Gross Additions		65
Gross Reductions		1,065
Ending balance		$ 27,681		$ 28,681
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(92)
Amount of Interest, Fees or Dividends Credited to Income				3,714
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 28,681		32,674
Gross Additions				92
Gross Reductions				4,085
Ending balance		27,681		28,681		32,674
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		12,540
Gross Reductions		0
Ending balance		$ 12,540		0
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		8.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		444
Gross Reductions		0
Ending balance		$ 444		0
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		586
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		30,339
Gross Reductions		0
Ending balance		30,339		0
Investment, Identifier [Axis]: Power System Solutions, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 1,160
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (82)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (82)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.12%
Spread	[11],[13]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 18,418
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.28%
Spread	[11],[13]	6.85%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 7,960
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.20%
Spread	[11],[13]	6.85%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 760
Investment, Identifier [Axis]: Principle Environmental, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(80)		(120)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		590		710
Gross Additions		0		0
Gross Reductions		80		120
Ending balance		510		590		710
Investment, Identifier [Axis]: Principle Environmental, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(1,670)		1,260
Amount of Interest, Fees or Dividends Credited to Income		743		1,355
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,420	[18]	11,160
Gross Additions		0		1,260
Gross Reductions		1,670		0
Ending balance		$ 10,750	[19]	12,420	[18]	11,160
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		104
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	1,465
Gross Additions		0		9
Gross Reductions		0		1,474
Ending balance		$ 0	[12]	$ 0	[16]	1,465
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		801		804
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,806		5,808
Gross Additions		23		24
Gross Reductions		0		26
Ending balance		5,829		$ 5,806		5,808
Investment, Identifier [Axis]: Project Eagle Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[15],[16],[17]			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	(18)
Ending balance	[15],[16],[17]			$ (18)
Investment, Identifier [Axis]: Project Eagle Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[15],[17]			10.64%
Spread	[15],[17]			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	29,419
Ending balance	[15],[17]			$ 29,419
Investment, Identifier [Axis]: Purge Rite, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 3,281
Investment, Identifier [Axis]: Purge Rite, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (47)
Investment, Identifier [Axis]: Purge Rite, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.70%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 9,610
Investment, Identifier [Axis]: Quality Lease Service, LCC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0		0
Investment, Identifier [Axis]: Quality Lease Service, LCC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ (86)
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions				0
Gross Reductions				0
Ending balance				0		0
Investment, Identifier [Axis]: Quality Lease Service, LLC 1, Secured Debt
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(98)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		525
Gross Additions		33
Gross Reductions		98
Ending balance		460		525
Investment, Identifier [Axis]: Quality Lease Service, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				76
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		525		2,148
Gross Additions				77
Gross Reductions				1,700
Ending balance		460		525		2,148
Investment, Identifier [Axis]: Quality Lease Service, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0		0
Investment, Identifier [Axis]: Quality Lease Service, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ (29,526)
Amount of Unrealized Gain/(Loss)		29,865
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		29,865
Gross Reductions		29,865
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[57]	12.22%
Spread		6.75%	[11],[13],[57]	6.75%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (11)
Ending balance		$ 772	[11],[13],[57]	$ (11)	[14],[15],[16],[17]
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.21%	[11],[13]	10.56%	[14],[15],[17]
Spread		6.75%	[11],[13]	6.75%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 12,094
Ending balance		12,512	[11],[13]	$ 12,094	[14],[15],[17]
Investment, Identifier [Axis]: RM Bidder, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	19
Ending balance	[15]			19
Investment, Identifier [Axis]: RM Bidder, LLC, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[70]	$ 0
Ending balance	[15],[70]			$ 0
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.21%	[11],[13]	12.02%	[14],[15],[17],[71]
Spread		7.75%	[11],[13]	7.75%	[14],[15],[17],[71]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[71]	$ 1,258
Ending balance		$ 534	[11],[13]	$ 1,258	[14],[15],[17],[71]
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.19%	[11],[13]	11.49%	[14],[15],[17]
Spread		7.75%	[11],[13]	7.75%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 15,367
Ending balance		$ 13,951	[11],[13]	$ 15,367	[14],[15],[17]
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.19%
Spread	[11],[13]	7.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 559
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.14%	[8],[13]	8.84%	[7],[17]
Spread		5.50%	[8],[13]	5.50%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 15,116
Ending balance		$ 14,715	[8],[13]	$ 15,116	[7],[17]
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[72]	18.47%
Spread	[11],[13],[72]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13],[72]	$ 3,109
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.88%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 39,376
Investment, Identifier [Axis]: River Aggregates, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		90		340
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,620	[28]	3,280
Gross Additions		90		340
Gross Reductions		0		0
Ending balance		3,710	[29]	3,620	[28]	3,280
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(14,880)		3,810
Amount of Interest, Fees or Dividends Credited to Income		0		558
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,880		11,070
Gross Additions		0		3,810
Gross Reductions		14,880		0
Ending balance		$ 0		14,880		11,070
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		32		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(35)	[16],[17]	(44)
Gross Additions		9		9
Gross Reductions		0		0
Ending balance		$ (26)	[12]	$ (35)	[16],[17]	(44)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	[17]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(3,113)		0
Amount of Interest, Fees or Dividends Credited to Income		4,489		4,678
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		35,404	[17]	36,000
Gross Additions		81		78
Gross Reductions		4,687		674
Ending balance		30,798		35,404	[17]	36,000
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Ending balance		0		$ 0
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Secured Debt
Schedule of Investments [Line Items]
Total Rate	[20],[27],[73]			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[20],[27],[73]	$ 0
Ending balance	[20],[27],[73]			$ 0
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[17]			10.97%
Spread		6.50%	[11],[12],[13]	6.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 311
Ending balance		$ 0	[11],[12],[13]	$ 311	[14],[15],[17]
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.16%	[11],[13]	10.32%	[14],[15],[17]
Spread		6.50%	[11],[13]	6.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 2,333
Ending balance		$ 3,314	[11],[13]	$ 2,333	[14],[15],[17]
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.16%	[11],[13]	10.32%	[14],[15],[17]
Spread		8.50%	[11],[13]	6.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 3,173
Ending balance		$ 3,266	[11],[13]	$ 3,173	[14],[15],[17]
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.54%	[11],[13]	13.02%	[14],[15],[17]
Spread		6.00%	[11],[13]	6.25%	[14],[15],[17]
PIK Rate		2.00%	[11],[13]	2.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 5,037
Ending balance		$ 5,744	[11],[13]	$ 5,037	[14],[15],[17]
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.54%	[11],[13]	13.02%	[14],[15],[17]
Spread		6.00%	[11],[13]	6.25%	[14],[15],[17]
PIK Rate		2.00%	[11],[13]	2.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 7,478
Ending balance		8,086	[11],[13]	$ 7,478	[14],[15],[17]
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		5,213		2,080
Amount of Interest, Fees or Dividends Credited to Income		1,196		647
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,650	[18]	11,570
Gross Additions		5,520		2,080
Gross Reductions		0		0
Ending balance		$ 19,170	[19]	13,650	[18]	11,570
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		17		0
Amount of Interest, Fees or Dividends Credited to Income		83		237
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	2,250
Gross Additions		1,875		3,750
Gross Reductions		750		6,000
Ending balance		$ 1,125		$ 0	[16]	2,250
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.47%	[74]	9.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 89,786
Ending balance		$ 54,536	[74]	$ 89,786
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.47%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		241
Amount of Interest, Fees or Dividends Credited to Income		4,075
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		54,536
Gross Reductions		0
Ending balance		54,536		$ 0
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2.2
Schedule of Investments [Line Items]
Total Rate				9.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(34)
Amount of Interest, Fees or Dividends Credited to Income				8,409
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 89,786		63,600
Gross Additions				31,159
Gross Reductions				4,973
Ending balance				89,786		63,600
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(79)
Amount of Interest, Fees or Dividends Credited to Income		3,885
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		89,786
Gross Additions		0
Gross Reductions		89,786
Ending balance		0		89,786
Investment, Identifier [Axis]: SIB Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	146
Ending balance	[15]			$ 146
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[15],[17]			11.01%
Spread	[15],[17]			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	393
Ending balance	[15],[17]			$ 393
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[15],[17]			11.01%
Spread	[15],[17]			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	1,433
Ending balance	[15],[17]			$ 1,433
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[15],[17]			11.01%
Spread	[15],[17]			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	7,151
Ending balance	[15],[17]			$ 7,151
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	639
Ending balance		$ 500	[11]	$ 639	[15]
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.00%	[11],[12],[13]	7.50%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (57)
Ending balance		$ 0	[11],[12],[13]	$ (57)	[14],[15],[16],[17]
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.72%	[11],[13]	11.06%	[14],[15],[17]
Spread		8.00%	[11],[13]	7.50%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 15,928
Ending balance		15,728	[11],[13]	$ 15,928	[14],[15],[17]
Investment, Identifier [Axis]: Savers, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17]			10.34%
Spread	[7],[14],[17]			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	10,938
Ending balance	[7],[14],[17]			$ 10,938
Investment, Identifier [Axis]: Slick Innovations, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		780		264
Amount of Interest, Fees or Dividends Credited to Income		0		456
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,530	[18]	1,510
Gross Additions		780		264
Gross Reductions		0		244
Ending balance		$ 2,310		$ 1,530	[18]	1,510
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(48)		70
Amount of Interest, Fees or Dividends Credited to Income		1,887		936
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,840		5,320
Gross Additions		48		10,080
Gross Reductions		2,448		1,560
Ending balance		11,440		13,840		5,320
Investment, Identifier [Axis]: Slick Innovations, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				1,219
Amount of Unrealized Gain/(Loss)				(219)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		400
Gross Additions				1,219
Gross Reductions				1,619
Ending balance				0		400
Investment, Identifier [Axis]: Sonic Systems International, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(76)
Amount of Interest, Fees or Dividends Credited to Income				43
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,280	[15]	1,070
Gross Additions				286
Gross Reductions				76
Ending balance				$ 1,280	[15]	1,070
Investment, Identifier [Axis]: Sonic Systems International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[17]			11.24%
Spread	[15],[17]			7.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				242
Amount of Interest, Fees or Dividends Credited to Income				1,434
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,769	[15],[17]	11,757
Gross Additions				4,012
Gross Reductions				0
Ending balance				15,769	[15],[17]	11,757
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	1,316
Ending balance		$ 836	[11]	$ 1,316	[15]
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.46%
Spread		6.00%	[11],[13]	5.75%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (71)
Ending balance		$ 394	[11],[13]	$ (71)	[15],[16],[17]
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.70%	[11],[13]	9.69%	[15],[17]
Spread		6.00%	[11],[13]	5.75%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 41,255
Ending balance		34,886	[11],[13]	$ 41,255	[15],[17]
Investment, Identifier [Axis]: Staples Canada ULC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[17],[34],[52],[75]			11.83%
Spread	[15],[17],[34],[52],[75]			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17],[34],[52],[75]	12,481
Ending balance	[15],[17],[34],[52],[75]			$ 12,481
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17]			10.05%
Spread	[7],[14],[17]			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	$ 7,166
Ending balance	[7],[14],[17]			$ 7,166
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8],[13]	11.04%
Spread	[8],[13]	5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 7,527
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[8],[13]	11.28%
Spread	[8],[13]	5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 8,977
Investment, Identifier [Axis]: Student Resource Center, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[11]	$ 0	[15]	0
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.50%	[11],[21]	13.27%	[15]
Spread	[15]			8.50%
PIK Rate		8.50%
Amount of Realized Gain/(Loss)		$ (2)
Amount of Unrealized Gain/(Loss)		(1,694)
Amount of Interest, Fees or Dividends Credited to Income		329
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	4,556
Gross Additions		221
Gross Reductions		1,587
Ending balance		3,190	[11],[21]	$ 4,556	[15]
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.27%
Spread				8.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,556		0
Gross Additions				4,556
Gross Reductions				0
Ending balance				4,556		0
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				(5,991)
Amount of Unrealized Gain/(Loss)				4,000
Amount of Interest, Fees or Dividends Credited to Income				6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		10,839
Gross Additions				5,877
Gross Reductions				16,716
Ending balance				0		10,839
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		1,440		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,500		4,500
Gross Additions		1,440		0
Gross Reductions		0		0
Ending balance		$ 5,940		$ 4,500		4,500
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2,564		2,662
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,378		21,332
Gross Additions		49		46
Gross Reductions		1,000		0
Ending balance		20,427		$ 21,378		21,332
Investment, Identifier [Axis]: Tacala Investment Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[17],[76],[77]			7.88%
Spread	[17],[76],[77]			3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[17],[76],[77]	$ 1,904
Ending balance	[17],[76],[77]			$ 1,904
Investment, Identifier [Axis]: Team Public Choices, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.88%	[8],[13]	9.93%	[7],[17]
Spread		5.00%	[8],[13]	5.00%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 14,290
Ending balance		14,717	[8],[13]	$ 14,290	[7],[17]
Investment, Identifier [Axis]: Tectonic Financial, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	5,630
Ending balance		5,030	[19]	5,630	[18]
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(1,564)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,681		8,579
Gross Additions				666
Gross Reductions				1,564
Ending balance				7,681		8,579
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(7,681)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,681
Gross Additions		0
Gross Reductions		7,681
Ending balance		0		7,681
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(564)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		494
Gross Reductions		494
Ending balance		0		0
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(661)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		661
Gross Reductions		661
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[25]	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(114)		0
Amount of Interest, Fees or Dividends Credited to Income		224		215
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,840		1,040
Gross Additions		0		800
Gross Reductions		114		0
Ending balance		$ 1,726	[25]	$ 1,840		1,040
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[25]	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(867)		(71)
Amount of Interest, Fees or Dividends Credited to Income		1,858		1,900
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,120		15,141
Gross Additions		8		51
Gross Reductions		866		72
Ending balance		14,262	[25]	15,120		15,141
Investment, Identifier [Axis]: Televerde, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(1,872)
Amount of Interest, Fees or Dividends Credited to Income				2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,408		7,280
Gross Additions				0
Gross Reductions				1,872
Ending balance		4,734	[19]	5,408		7,280
Investment, Identifier [Axis]: Televerde, LLC, Memeber Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(674)
Amount of Interest, Fees or Dividends Credited to Income		333
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,408
Gross Additions		0
Gross Reductions		674
Ending balance		4,734		5,408
Investment, Identifier [Axis]: Televerde, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		1,076
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,794		0
Gross Additions		0		1,794
Gross Reductions		0		0
Ending balance		1,794		1,794		0
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[28]	1,830
Ending balance		2,840	[11],[29]	1,830	[15],[28]
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				403
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,400	[18]	6,400
Gross Additions				0
Gross Reductions				0
Ending balance				6,400	[18]	6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		172
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		188
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,400
Gross Additions		0
Gross Reductions		0
Ending balance		6,400		6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[19]	6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		172
Gross Reductions		0
Ending balance		$ 172		$ 0
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		30		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		106		262
Gross Additions		2,764		3,764
Gross Reductions		2,720		3,920
Ending balance		$ 150		$ 106		262
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(129)		0
Amount of Interest, Fees or Dividends Credited to Income		1,176		1,520
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,442		12,834
Gross Additions		34		48
Gross Reductions		2,129		3,440
Ending balance		7,347		9,442		12,834
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		4,940		(860)
Amount of Interest, Fees or Dividends Credited to Income		116		116
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,800	[18]	8,660
Gross Additions		4,940		0
Gross Reductions		0		860
Ending balance		$ 12,740	[19]	7,800	[18]	8,660
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(18)
Amount of Interest, Fees or Dividends Credited to Income		982
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,920
Gross Additions		18
Gross Reductions		18
Ending balance		$ 7,920		7,920
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		8.00%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		(3)		5
Amount of Interest, Fees or Dividends Credited to Income		7		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	(8)
Gross Additions		3		8
Gross Reductions		3		0
Ending balance		$ 0	[12]	$ 0	[16]	(8)
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(23)
Amount of Interest, Fees or Dividends Credited to Income				1,044
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 7,920		8,720
Gross Additions				23
Gross Reductions				823
Ending balance		7,920		$ 7,920		8,720
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17]			11.57%
Spread	[7],[14],[17]			1.25%
PIK Rate	[7],[14],[17]			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	$ 6,859
Ending balance	[7],[14],[17]			$ 6,859
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8],[13],[21]	12.53%
Spread	[8],[13],[21]	7.15%
PIK Rate	[8],[13],[21]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13],[21]	$ 3,333
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[21]	0
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[17]			9.82%
Spread	[15],[17]			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 33,577
Ending balance	[15],[17]			$ 33,577
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.46%
Spread	[11],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 23,101
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.96%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 9,017
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.96%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 4,689
Investment, Identifier [Axis]: UniTek Global Services, Inc. Secured Convertible Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%
PIK Rate		15.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(13)
Amount of Interest, Fees or Dividends Credited to Income		312
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,592
Gross Additions		0
Gross Reductions		703
Ending balance		$ 3,889		4,592
Investment, Identifier [Axis]: UniTek Global Services, Inc. Secured Convertible Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%
PIK Rate		15.00%
Amount of Realized Gain/(Loss)		$ (223)
Amount of Unrealized Gain/(Loss)		1,067
Amount of Interest, Fees or Dividends Credited to Income		66
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		2,131
Gross Reductions		223
Ending balance		1,908		0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[7]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[8]	$ 0	[7]	0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate		20.00%	[8],[19]	20.00%	[7],[18]
PIK Rate		20.00%	[8],[19]	20.00%	[7],[18]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(468)		(384)
Amount of Interest, Fees or Dividends Credited to Income		468		384
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,833	[7],[18]	2,832
Gross Additions		468		385
Gross Reductions		468		384
Ending balance		$ 2,833	[8],[19]	$ 2,833	[7],[18]	2,832
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2
Schedule of Investments [Line Items]
Total Rate		20.00%	[8]	20.00%	[7]
PIK Rate		20.00%	[8]	20.00%	[7]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		1,707		493
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,991	[7]	1,498
Gross Additions		1,707		493
Gross Reductions		0		0
Ending balance		$ 3,698	[8]	$ 1,991	[7]	1,498
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3
Schedule of Investments [Line Items]
Total Rate		19.00%	[8]	19.00%	[7]
PIK Rate		19.00%	[8]	19.00%	[7]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[7]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[8]	$ 0	[7]	0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4
Schedule of Investments [Line Items]
Total Rate		13.50%	[8]	13.50%	[7]
PIK Rate		13.50%	[8]	13.50%	[7]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[7]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0	[8]	$ 0	[7]	0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt
Schedule of Investments [Line Items]
Total Rate	[7]			15.00%
PIK Rate	[7]			15.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				1,011
Amount of Interest, Fees or Dividends Credited to Income				269
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 4,592	[7]	2,375
Gross Additions				2,217
Gross Reductions				0
Ending balance				$ 4,592	[7]	2,375
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1
Schedule of Investments [Line Items]
Total Rate	[8]	15.00%
PIK Rate	[8]	15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	$ 3,889
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2
Schedule of Investments [Line Items]
Total Rate	[8]	15.00%
PIK Rate	[8]	15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	$ 1,908
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17]			10.76%
Spread		7.50%		5.50%	[7],[14],[17]
PIK Rate	[7],[14],[17]			2.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		22		3
Amount of Interest, Fees or Dividends Credited to Income		0		40
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		382	[7],[14],[17]	371
Gross Additions		25		11
Gross Reductions		407		0
Ending balance		$ 0		$ 382	[7],[14],[17]	371
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17]			10.76%
Spread		7.50%		5.50%	[7],[14],[17]
PIK Rate	[7],[14],[17]			2.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		96		26
Amount of Interest, Fees or Dividends Credited to Income		275		201
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,712	[7],[14],[17]	1,852
Gross Additions		112		72
Gross Reductions		1,824		212
Ending balance		0		1,712	[7],[14],[17]	1,852
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(174)
Amount of Interest, Fees or Dividends Credited to Income				596
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,855	[18],[34],[35],[36]	6,123
Gross Additions				2,491
Gross Reductions				2,759
Ending balance		5,694	[32],[37],[38]	5,855	[18],[34],[35],[36]	6,123
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(146)
Amount of Interest, Fees or Dividends Credited to Income		53
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,855
Gross Additions		531
Gross Reductions		692
Ending balance		5,694		5,855
Investment, Identifier [Axis]: UnionRock Energy Fund III, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		345
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		2,838
Gross Reductions		0
Ending balance		2,838	[32],[37],[38]	0
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[28]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[11],[29]	0	[15],[28]	0
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Memeber Units
Schedule of Investments [Line Items]
Total Rate		14.00%
PIK Rate		14.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(70)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		220
Gross Additions		0
Gross Reductions		70
Ending balance		$ 150		$ 220
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[29]	14.00%	[15],[28]
PIK Rate		14.00%	[11],[29]	14.00%	[15],[28]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				220
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 220	[15],[28]	0
Gross Additions				220
Gross Reductions				0
Ending balance		$ 150	[11],[29]	220	[15],[28]	0
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.99%
Spread	[11],[13]	7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 4,000
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[18]	3,930
Ending balance		2,570	[11],[19]	3,930	[15],[18]
Investment, Identifier [Axis]: VVS Holdco LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(100)		100
Amount of Interest, Fees or Dividends Credited to Income		215		518
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,940	[18],[28]	11,840
Gross Additions		400		100
Gross Reductions		100		0
Ending balance		$ 12,240	[19],[29]	$ 11,940	[18],[28]	11,840
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[12],[13],[25]	6.00%	[16],[17],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		39		55
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(21)	[16],[17],[28]	1,169
Gross Additions		21		811
Gross Reductions		0		2,001
Ending balance		$ 0	[12],[13],[25]	$ (21)	[16],[17],[28]	1,169
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		11.50%	[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		3,468		3,606
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		30,161	[28]	30,100
Gross Additions		74		61
Gross Reductions		2,200		0
Ending balance		$ 28,035		$ 30,161	[28]	30,100
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.25%	[8],[12],[13]	5.25%	[7],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[16],[17]	$ (630)
Ending balance		$ (408)	[8],[12],[13]	$ (630)	[7],[16],[17]
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.64%	[8],[13]	10.41%	[7],[17]
Spread		6.00%	[8],[13]	6.00%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 15,479
Ending balance		15,775	[8],[13]	$ 15,479	[7],[17]
Investment, Identifier [Axis]: Vida Capital, Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7]			10.38%
Spread	[7]			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	12,049
Ending balance	[7]			$ 12,049
Investment, Identifier [Axis]: Vision Interests, Inc., Series A Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		168		144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,000	[18]	3,000
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		3,000	[19]	3,000	[18]	3,000
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	2,250
Ending balance		$ 2,180	[11]	2,250	[15]
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.63%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 41,455
Investment, Identifier [Axis]: Volusion, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(2,576)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		2,576
Gross Reductions		2,576
Ending balance		0		0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(5,990)
Amount of Interest, Fees or Dividends Credited to Income				3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		5,990
Gross Additions				0
Gross Reductions				5,990
Ending balance				0		5,990
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		7,250
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		0		0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(1,396)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		11,446
Gross Reductions		4,196
Ending balance		7,250		0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		11.50%	[27]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(1,821)
Amount of Interest, Fees or Dividends Credited to Income				1,982
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 14,914	[27]	17,434
Gross Additions				0
Gross Reductions				2,520
Ending balance		$ 2,100		14,914	[27]	17,434
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		161
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		2,100
Gross Reductions		0
Ending balance		$ 2,100		0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%
Amount of Realized Gain/(Loss)		$ (3,188)
Amount of Unrealized Gain/(Loss)		1,821
Amount of Interest, Fees or Dividends Credited to Income		166
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,914
Gross Additions		0
Gross Reductions		14,914
Ending balance		$ 0		$ 14,914
Investment, Identifier [Axis]: Volusion, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%
Amount of Realized Gain/(Loss)		$ (409)		$ (143)
Amount of Unrealized Gain/(Loss)		409		(409)
Amount of Interest, Fees or Dividends Credited to Income		0		33
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		409
Gross Additions		409		0
Gross Reductions		409		409
Ending balance		0		0		409
Investment, Identifier [Axis]: Volusion, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		2,576		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[9]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		$ 0	[9]	0
Investment, Identifier [Axis]: Wahoo Fitness Acquisition L.L.C., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[17]			10.64%
Spread	[7],[14],[17]			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[17]	8,409
Ending balance	[7],[14],[17]			$ 8,409
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	420
Ending balance		$ 731	[11]	$ 420	[15]
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]	7.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (6)
Ending balance		$ (4)	[11],[12],[13]	$ (6)	[15],[16],[17]
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.54%	[11],[13]	10.74%	[15],[17]
Spread		7.00%	[11],[13]	7.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 4,146
Ending balance		$ 3,723	[11],[13]	$ 4,146	[15],[17]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.50%	[11],[13],[61]	10.73%	[15],[17]
Spread		6.00%	[11],[13],[61]	6.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 370
Ending balance		$ 1,853	[11],[13],[61]	$ 370	[15],[17]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%	[11],[13]	10.73%	[15],[17]
Spread		6.00%	[11],[13]	6.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 391
Ending balance		$ 386	[11],[13]	$ 391	[15],[17]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.50%	[11],[13]	10.73%	[15],[17]
Spread		6.00%	[11],[13]	6.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 28,947
Ending balance		$ 15,886	[11],[13]	$ 28,947	[15],[17]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.50%
Spread	[11],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 12,707
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	1,950
Ending balance		$ 2,990	[11],[13]	$ 1,950	[15]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[78]	11.34%
Spread		6.00%	[11],[13],[78]	6.00%	[14],[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[17]	$ (20)
Ending balance		$ 2,405	[11],[13],[78]	$ (20)	[14],[15],[16],[17]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.35%	[11],[13]	8.59%	[14],[15],[17]
Spread		6.00%	[11],[13]	6.00%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 10,685
Ending balance		$ 10,658	[11],[13]	$ 10,685	[14],[15],[17]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.35%
Spread	[11],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 5,303
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[79]	12.64%
Spread		7.00%	[11],[13],[79]	7.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ 0
Ending balance		$ 2,222	[11],[13],[79]	$ 0	[15],[16],[17]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.66%
Spread		7.00%	[11],[13]	7.00%	[15],[16],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16],[17]	$ (17)
Ending balance		$ 2,067	[11],[13]	$ (17)	[15],[16],[17]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.66%	[11],[13]	10.74%	[15],[17]
Spread		7.00%	[11],[13]	7.00%	[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[17]	$ 9,992
Ending balance		9,300	[11],[13]	$ 9,992	[15],[17]
Investment, Identifier [Axis]: World Micro Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		226		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,845		0
Gross Additions		0		3,845
Gross Reductions		0		0
Ending balance		$ 3,845	[19]	$ 3,845		0
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		1,895		248
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,140		0
Gross Additions		45		14,140
Gross Reductions		2,157		0
Ending balance		$ 12,028		$ 14,140		0
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.25%	[11],[12],[13]	5.25%	[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[16]	$ (218)
Ending balance		$ 0	[11],[12],[13]	$ (218)	[15],[16]
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.22%	[11],[13]	10.84%	[15]
Spread		5.75%	[11],[13]	5.25%	[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	$ 24,135
Ending balance		$ 24,057	[11],[13]	$ 24,135	[15]
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.25%	[11],[13]	8.63%	[15]
Spread		5.75%	[11],[13]	5.25%	[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	$ 38,051
Ending balance		$ 37,828	[11],[13]	$ 38,051	[15]
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%	[8],[13]	9.51%	[7],[17]
Spread		7.50%	[8],[13]	5.50%	[7],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[17]	$ 12,127
Ending balance		10,220	[8],[13]	$ 12,127	[7],[17]
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(240)		(1,890)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		240		2,130
Gross Additions		0		0
Gross Reductions		240		1,890
Ending balance		$ 0		240		2,130
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		6.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		66
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		945
Gross Additions		0
Gross Reductions		0
Ending balance		$ 945		$ 945
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		55		71
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		450		625
Gross Additions		0		0
Gross Reductions		0		175
Ending balance		$ 450		$ 450		625
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		6.50%		6.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(55)
Amount of Interest, Fees or Dividends Credited to Income				66
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 945		1,000
Gross Additions				0
Gross Reductions				55
Ending balance		$ 945		$ 945		1,000
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(596)		(74)
Amount of Interest, Fees or Dividends Credited to Income		390		390
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,676		2,750
Gross Additions		0		0
Gross Reductions		596		74
Ending balance		2,080		2,676		2,750
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[9]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[10]	$ 0	[9]	$ 0
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.71%	[11],[13],[80]	11.67%	[14],[15],[17]
Spread		7.25%	[11],[13],[80]	7.25%	[14],[15],[17]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17]	$ 17,512
Ending balance		$ 16,380	[11],[13],[80]	$ 17,512	[14],[15],[17]
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.71%	[11],[13],[80]	11.67%	[14],[15],[17],[76]
Spread		7.25%	[11],[13],[80]	7.25%	[14],[15],[17],[76]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[17],[76]	$ 4,379
Ending balance		$ 4,067	[11],[13],[80]	$ 4,379	[14],[15],[17],[76]
[1] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. [2] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. [3] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained. [4] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained. [5] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments. [6] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments. [7] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [8] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [9] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [10] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [11] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [12] The position is unfunded and no interest income is being earned as of December 31, 2023. The position may earn a nominal unused facility fee on committed amounts. [13] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 96% of these floating rate loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.20%. [14] A majority of the variable rate loans in the Company’s Investment Portfolio bear interest at a rate that may be determined by reference to either LIBOR (“L”), SOFR (“SF”) or an alternate Base rate (commonly based on the Federal Funds Rate or the Prime rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR rate, plus the Adjustment, exceeds the stated floor rate, as applicable. As of December 31, 2022, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.35%. [15] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [16] The position is unfunded and no interest income is being earned as of December 31, 2022. The position may earn a nominal unused facility fee on committed amounts. [17] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 66% of these floating rate loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.04%. [18] Income producing through dividends or distributions. [19] Income producing through dividends or distributions. [20] Non-accrual and non-income producing debt investment. [21] Non-accrual and non-income producing debt investment. [22] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit. [23] Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [24] Index based floating interest rate is subject to contractual maximum base rate of 2.50%. [25] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [26] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+6.00% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [27] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [28] Shares/Units represent ownership in a related Real Estate or HoldCo entity. [29] Shares/Units represent ownership in a related Real Estate or HoldCo entity. [30] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR plus 8.00% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [31] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+8.00% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [32] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. [33] Portfolio company headquarters are located outside of the United States. [34] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. [35] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [36] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [37] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [38] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [39] The security has an effective contractual interest rate of 2.00% PIK + LIBOR+6.50%, Floor 1.00%, but the issuer may, in its discretion, elect to pay the PIK interest in cash. The rate presented represents the effective current yield based on actual payments received during the period. [40] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [41] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [42] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). Due to an amendment and subsequent funding during the quarter, the term loan facility has different floating rate reset dates. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [43] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [44] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [45] Effective yield as of December 31, 2023 was approximately 4.98% on the Dreyfus Government Cash Management. [46] Effective yield as of December 31, 2023 was approximately 5.01% on the Fidelity Government Fund. [47] Effective yield as of December 31, 2023 was approximately 4.99% on the Fidelity Treasury. [48] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [49] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [50] Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [51] Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [52] Portfolio company headquarters are located outside of the United States. [53] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [54] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 1.50%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [55] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+6.50% PIK or Prime+5.50% PIK. Revolving facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [56] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit. [57] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [58] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [59] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [60] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [61] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [62] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [63] External Investment Manager. Investment is not encumbered as security for the Company’s Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds. [64] External Investment Manager. Investment is not encumbered as security for the Company’s Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds. [65] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+7.25% (Floor 0.75%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [66] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [67] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [68] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+5.75% (1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [69] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). Delayed draw term loan facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [70] Warrants are presented in equivalent units with a strike price of $14.28 per unit. [71] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.75% (Floor 1.25%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [72] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.50% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [73] Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investment in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investment in this portfolio company is on non-accrual status. [74] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of 11.25% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [75] In connection with the Company’s debt investment in Staples Canada ULC and in an attempt to mitigate any potential adverse change in foreign exchange rates during the term of the Company’s investment, the Company maintains a forward foreign currency contract with Cadence Bank to lend $16.9 million Canadian Dollars and receive $13.1 million U.S. Dollars with a settlement date of September 14, 2023. The unrealized appreciation on the forward foreign currency contract was $0.6 million as of December 31, 2022. [76] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). Each new draw on the delayed draw term loan facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [77] Short-term portfolio investments. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of short-term portfolio investments. [78] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.00% (0.75%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [79] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023. [80] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.