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

v3.24.1.1.u2

Consolidated Schedule of Investments In and Advances to Affiliates (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024		Mar. 31, 2023	Dec. 31, 2023
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ (12,367)		$ (28,379)
Amount of Unrealized Gain/(Loss)		40,647		35,118
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[1]	4,286,271
Ending balance	[2]	4,548,027
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		10		(2,966)
Amount of Unrealized Gain/(Loss)		32,070		17,161
Amount of Interest, Fees or Dividends Credited to Income		51,119		48,862
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,006,698	[1],[3]	1,703,172
Gross Additions		117,042		83,687
Gross Reductions		63,458		55,770
Ending balance		2,051,212	[2],[4]	1,746,003
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(7,110)		(26,264)
Amount of Unrealized Gain/(Loss)		5,925		33,141
Amount of Interest, Fees or Dividends Credited to Income		17,728		17,456
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		615,002	[1],[5]	618,359
Gross Additions		71,659		81,567
Gross Reductions		29,782		58,785
Ending balance		665,949	[2],[6]	626,227
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)		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		315		248
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		315		248
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		10		631
Amount of Unrealized Gain/(Loss)		0		(675)
Amount of Interest, Fees or Dividends Credited to Income		40		141
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,050		7,552
Gross Additions		10		1,031
Gross Reductions		10		1,574
Ending balance		6,050		7,009
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		996
Gross Additions		1
Gross Reductions		0
Ending balance		997
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		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
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		18.00%	[8]	18.00%	18.00%	[7]
PIK Rate		18.00%	[8]		18.00%	[7]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1)		(6)
Amount of Interest, Fees or Dividends Credited to Income		22		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		418	[7]	0
Gross Additions		37		315
Gross Reductions		1		6
Ending balance		$ 454	[8]	$ 309
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		18.00%	[8]	18.00%	18.00%	[7]
PIK Rate		18.00%	[8]	18.00%	18.00%	[7]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(21)		(268)
Amount of Interest, Fees or Dividends Credited to Income		685		572
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,895	[7]	11,550
Gross Additions		1,200		572
Gross Reductions		21		267
Ending balance		15,074	[8]	11,855
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		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],[9]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[8],[10]	0
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[11],[12],[13]		5.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[12],[13]	$ 0
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13],[17]		11.43%	[14],[15]
Spread		6.00%	[11],[13],[17]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,921
Ending balance	[11],[13],[17]	$ 4,173
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]		11.43%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 19,817
Ending balance	[11],[13]	$ 19,767
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]		11.43%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,372
Ending balance	[11],[13]	$ 1,369
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.19%	[8],[13]		11.22%	[7],[15]
Spread		5.75%	[8],[13]		5.75%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 10,860
Ending balance	[8],[13]	6,535
Investment, Identifier [Axis]: AFG Capital Group, 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				9,400
Gross Additions				0
Gross Reductions				0
Ending balance				9,400
Investment, Identifier [Axis]: AMEREQUIP LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[18]	2,120
Ending balance	[11],[19]	2,120
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[15],[16]				7.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	(108)
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15]				12.76%
Spread	[14],[15]				7.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	28,422
Investment, Identifier [Axis]: ASC Interests, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(100)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		100		800
Gross Additions		0		0
Gross Reductions		0		100
Ending balance		100		$ 700
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		266
Gross Additions		0
Gross Reductions		0
Ending balance		$ 266
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		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		13		13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		400		400
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 400		$ 400
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		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		54
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,597		1,649
Gross Additions		1		0
Gross Reductions		0		0
Ending balance		1,598		$ 1,649
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate				14.13%
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
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				84
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				3,504
Gross Additions				84
Gross Reductions				0
Ending balance				$ 3,588
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Secured Debt 1
Schedule of Investments [Line Items]
Spread				10.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				(3)
Gross Additions				1
Gross Reductions				0
Ending balance				$ (2)
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, LLC), Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				14.75%
Spread				10.00%
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				4,545
Gross Additions				20
Gross Reductions				70
Ending balance				4,495
Investment, Identifier [Axis]: ASK (Analytical Systems Keco Holdings, 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				0
Gross Reductions				0
Ending balance				0
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	670
Ending balance	[11]	$ 720
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.09%	[11],[13]		12.16%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 360
Ending balance	[11],[13]	$ 360
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.09%	[11],[13]		11.16%	[14],[15]
Spread		5.50%	[11],[13]		5.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,660
Ending balance	[11],[13]	$ 6,660
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.09%	[11],[13]		13.16%	[14],[15]
Spread		7.50%	[11],[13]		7.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,660
Ending balance	[11],[13]	6,660
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	[14]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[11]	$ 0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		5.00%	[11],[20]	5.00%	5.00%	[14],[21]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(238)		(132)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		328	[14],[21]	634
Gross Additions		167		21
Gross Reductions		238		132
Ending balance		$ 257	[11],[20]	$ 523
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		5.00%	[11],[20]	5.00%	5.00%	[14],[21]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(130)		(186)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		473	[14],[21]	1,005
Gross Additions		0		0
Gross Reductions		130		185
Ending balance		343	[11],[20]	820
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				3,248
Amount of Unrealized Gain/(Loss)				(3,270)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				3,270
Gross Additions				3,248
Gross Reductions				6,518
Ending balance				$ 0
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt
Schedule of Investments [Line Items]
Spread				7.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(134)
Amount of Interest, Fees or Dividends Credited to Income				886
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				6,343
Gross Additions				575
Gross Reductions				6,918
Ending balance				$ 0
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt
Schedule of Investments [Line Items]
PIK Rate				10.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(306)
Amount of Interest, Fees or Dividends Credited to Income				1,160
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				2,598
Gross Additions				1,160
Gross Reductions				3,758
Ending balance				0
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[18]	892
Ending balance	[11],[19]	$ 892
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]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (38)
Ending balance	[11],[12],[13]	$ (112)
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.71%	[11],[13]		12.76%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 24,080
Ending balance	[11],[13]	$ 24,272
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]		7.50%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (2)
Ending balance	[11],[12],[13]	$ (2)
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.43%	[11],[13]		12.98%	[14],[15]
Spread		7.00%	[11],[13]		7.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 24,796
Ending balance	[11],[13]	24,639
Investment, Identifier [Axis]: Acumera, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[22]	110
Ending balance	[11],[23]	$ 110
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	[11],[13],[24]		11.00%	[14],[15],[25]
Spread		7.00%	[11],[13],[24]		7.00%	[14],[15],[25]
PIK Rate		1.00%	[11],[13],[24]		1.00%	[14],[15],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[25]	$ 7,684
Ending balance	[11],[13],[24]	$ 7,562
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	[11],[13],[24]		11.00%	[14],[15],[25]
Spread		7.00%	[11],[13],[24]		7.00%	[14],[15],[25]
PIK Rate		1.00%	[11],[13],[24]		1.00%	[14],[15],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[25]	$ 20,784
Ending balance	[11],[13],[24]	$ 19,838
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[11],[12],[13]		5.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (8)
Ending balance	[11],[12],[13]	$ (7)
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.61%	[11],[13]		13.50%	[14],[15]
Spread		6.00%	[11],[13]		5.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,550
Ending balance	[11],[13]	$ 6,533
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.23%	[11],[13]		15.29%	[14],[15]
Spread		9.75%	[11],[13]		9.75%	[14],[15]
PIK Rate		15.23%	[11],[13]		15.29%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 5,495
Ending balance	[11],[13]	$ 5,405
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.23%	[11],[13]		15.29%	[14],[15]
Spread		9.75%	[11],[13]		9.75%	[14],[15]
PIK Rate		15.23%	[11],[13]		15.29%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 8,922
Ending balance	[11],[13]	$ 8,794
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		17.23%	[11],[13],[20]		17.29%	[14],[15],[21]
Spread		11.75%	[11],[13],[20]		11.75%	[14],[15],[21]
PIK Rate		17.23%	[11],[13],[20]		17.29%	[14],[15],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[21]	$ 3,369
Ending balance	[11],[13],[20]	$ 3,305
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		17.23%	[11],[13],[20]		17.29%	[14],[15],[21]
Spread		11.75%	[11],[13],[20]		11.75%	[14],[15],[21]
PIK Rate		17.23%	[11],[13],[20]		17.29%	[14],[15],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[21]	$ 5,482
Ending balance	[11],[13],[20]	5,378
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[21],[26]	134
Ending balance	[8],[20],[27]	76
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[21],[26]	647
Ending balance	[8],[20],[27]	374
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)		0		0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		(1,354)		171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(9,070)		14,914
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		0
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)		0
Amount of Interest, Fees or Dividends Credited to Income		1,354
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,070
Gross Additions		0
Gross Reductions		0
Ending balance		0
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Controlled Investments
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				(171)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				(14,914)
Gross Additions				0
Gross Reductions				0
Ending balance				0
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		4,860
Ending balance		$ 5,550
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Total Rate		14.13%
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
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
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		690
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,860
Gross Additions		690
Gross Reductions		0
Ending balance		$ 5,550
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.38%	[13]		15.38%	[15]
Spread		10.00%	[13]		10.00%	[15]
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	[15]	219
Gross Additions		0
Gross Reductions		0
Ending balance	[13]	$ 219
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.38%	[13]		15.38%	[15]
Spread		10.00%	[13]		10.00%	[15]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		166
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	4,084
Gross Additions		17
Gross Reductions		70
Ending balance	[13]	4,031
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, 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	[9]	0
Gross Additions		0
Gross Reductions		0
Ending balance	[10]	0
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	0
Ending balance	[11]	0
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	14,060
Ending balance	[11]	13,509
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	0
Ending balance	[11]	$ 0
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[11]		15.00%	[14]
PIK Rate		15.00%	[11]		15.00%	[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	$ 1,907
Ending balance	[11]	$ 3,676
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.94%	[11],[13]		12.04%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
PIK Rate		12.04%	[11],[13]		12.04%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 7,149
Ending balance	[11],[13]	7,367
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	2,230
Ending balance	[11]	2,060
Investment, Identifier [Axis]: BBB Tank Services, LLC, 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
Investment, Identifier [Axis]: BBB Tank Services, LLC, Preferred Stock (non-voting)
Schedule of Investments [Line Items]
Total Rate				15.00%
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
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.66%
Spread				11.00%
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				800
Gross Additions				0
Gross Reductions				0
Ending balance				$ 800
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate				15.66%
Spread				11.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				155
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				2,086
Gross Additions				0
Gross Reductions				0
Ending balance				2,086
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 2,333
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., 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]	$ (52)
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., 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]	$ (26)
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.66%
Spread	[11],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 26,157
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)		480		(280)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,140	[14]	3,320
Gross Additions		480		0
Gross Reductions		0		283
Ending balance		$ 4,620	[11]	$ 3,037
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		7.00%	[11]	7.00%	7.00%	[14]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		13		30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		711	[14]	711
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		711	[11]	711
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)		0		2,055
Amount of Interest, Fees or Dividends Credited to Income		351		167
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,150	[18]	4,095
Gross Additions		0		2,055
Gross Reductions		1		0
Ending balance		$ 6,149	[19]	6,150
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)		0		0
Amount of Interest, Fees or Dividends Credited to Income		6		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	(8)
Gross Additions		450		1
Gross Reductions		0		0
Ending balance		$ 450		(7)
Investment, Identifier [Axis]: Batjer TopCo, 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		0
Amount of Interest, Fees or Dividends Credited to Income		7		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		270		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 270		$ 0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%	10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(5)		0
Amount of Interest, Fees or Dividends Credited to Income		273		311
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,575		10,933
Gross Additions		5		9
Gross Reductions		5		450
Ending balance		10,575		10,492
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[28]	200
Ending balance	[11],[29]	70
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[18],[28]	2,560
Ending balance	[11],[19],[29]	880
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 1,049
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[11],[12],[13]		7.25%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (62)
Ending balance	[11],[12],[13]	$ (59)
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.59%	[11],[13]		12.64%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
PIK Rate		6.25%	[11],[13]		6.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 27,550
Ending balance	[11],[13]	28,386
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	120
Ending balance	[11]	500
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	550
Ending balance	[8]	$ 70
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[7],[15]				16.00%
Spread		8.50%	[8],[12],[13]		7.50%	[7],[15]
PIK Rate	[7],[15]				15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 1,767
Ending balance	[8],[12],[13]	$ 0
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.00%	[8],[13]		13.96%	[7],[15]
Spread		7.50%	[8],[13]		8.50%	[7],[15]
PIK Rate		15.00%	[8],[13]		12.96%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 3,446
Ending balance	[8],[13]	$ 2,844
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[13]	13.94%
Spread	[8],[13]	8.50%
PIK Rate	[8],[13]	12.94%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 3,475
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[9]	120
Ending balance	[8],[10]	20
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)		(960)		(200)
Amount of Interest, Fees or Dividends Credited to Income		8		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,990		2,970
Gross Additions		0		0
Gross Reductions		960		200
Ending balance		$ 1,030	[19]	$ 2,770
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		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		8		8
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
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[19]	8.00%	8.00%	[18]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		1,990		0
Amount of Interest, Fees or Dividends Credited to Income		875		1,096
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		31,020	[18]	31,420
Gross Additions		1,990		0
Gross Reductions		0		0
Ending balance		$ 33,010	[19]	31,420
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.46%	[13],[30]		14.48%	[15],[31]
Spread		8.09%	[13],[30]		9.11%	[15],[31]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		10
Amount of Interest, Fees or Dividends Credited to Income		3,308
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[31]	96,556
Gross Additions		7,536
Gross Reductions		660
Ending balance	[13],[30]	103,432
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				1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.91%
Spread				9.22%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(36)
Amount of Interest, Fees or Dividends Credited to Income				3,431
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				99,194
Gross Additions				36
Gross Reductions				695
Ending balance				98,535
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[32],[33]	0
Ending balance	[11],[34],[35]	0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[32],[33]	500
Ending balance	[11],[34],[35]	$ 500
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13],[34],[35]		7.00%	[14],[15],[16],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16],[32],[33]	$ (25)
Ending balance	[11],[12],[13],[34],[35]	$ (23)
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.48%	[11],[13],[34],[35]		11.54%	[14],[15],[32],[33]
Spread		6.00%	[11],[13],[34],[35]		6.00%	[14],[15],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[32],[33]	$ 6,405
Ending balance	[11],[13],[34],[35]	$ 6,389
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.48%	[11],[13],[34],[35]		13.54%	[14],[15],[32],[33]
Spread		8.00%	[11],[13],[34],[35]		8.00%	[14],[15],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[32],[33]	$ 6,405
Ending balance	[11],[13],[34],[35]	$ 6,389
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.75%	[11],[13],[20],[27]		15.75%	[14],[15],[21],[26]
Spread		7.25%	[11],[13],[20],[27]		7.25%	[14],[15],[21],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[21],[26]	$ 761
Ending balance	[11],[13],[20],[27]	$ 761
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.75%	[11],[13],[20],[27]		15.75%	[14],[15],[21],[26]
Spread		7.25%	[11],[13],[20],[27]		7.25%	[14],[15],[21],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[21],[26]	$ 1,075
Ending balance	[11],[13],[20],[27]	921
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)		100		(520)
Amount of Interest, Fees or Dividends Credited to Income		30		30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,620	[18]	7,080
Gross Additions		100		0
Gross Reductions		0		520
Ending balance		$ 5,720	[19]	$ 6,560
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.48%	[13]	14.66%	15.46%	[15]
Spread		10.00%	[13]	10.00%	10.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		210		212
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,498	[15]	5,964
Gross Additions		0		0
Gross Reductions		124		124
Ending balance		5,374	[13]	5,840
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		25		25
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
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		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		290		286
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
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		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		33		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,000		1,000
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		1,000		1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[9]	4,290
Ending balance	[10]	4,290
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)		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		1,808		1,828
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		1,808		1,828
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)		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		2,482		2,512
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		2,482		$ 2,512
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	[32],[36],[37]	4,080
Ending balance	[34],[38],[39]	4,034
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],[32],[36],[37]	4,358
Ending balance	[19],[34],[38],[39]	4,358
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	[18],[32],[36],[37]	2,448
Ending balance	[19],[34],[38],[39]	$ 2,211
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		6.00%		6.00%	6.00%
PIK Rate		6.00%		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
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%	[27]	12.00%	12.00%	[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		563		521
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,144	[26]	12,337
Gross Additions		0		0
Gross Reductions		0		375
Ending balance		$ 12,144	[27]	11,962
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15]				10.46%
Spread		5.00%	[11],[12],[13]		5.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 465
Ending balance	[11],[12],[13]	$ 0
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.43%	[11],[13]		10.46%	[14],[15]
Spread		5.00%	[11],[13]		5.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 19,681
Ending balance	[11],[13]	20,256
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,789
Ending balance		2,142
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
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)		0		860
Amount of Interest, Fees or Dividends Credited to Income		824		1,235
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		50,130	[18]	49,002
Gross Additions		0		858
Gross Reductions		0		0
Ending balance		$ 50,130	[19]	49,860
Investment, Identifier [Axis]: CMS Minerals Investments, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(431)
Amount of Interest, Fees or Dividends Credited to Income				44
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,670
Gross Additions				0
Gross Reductions				435
Ending balance				1,235
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]		7.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (66)
Ending balance	[11],[12],[13]	$ (61)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]		7.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (66)
Ending balance	[11],[12],[13]	$ (61)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.41%	[11],[13]		12.45%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 10,920
Ending balance	[11],[13]	11,028
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)		(71)		(370)
Amount of Interest, Fees or Dividends Credited to Income		9		16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,980	[18]	2,210
Gross Additions		0		0
Gross Reductions		71		370
Ending balance		$ 1,909	[19]	1,840
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]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 4,601	[18]	25,495
Gross Additions				0
Gross Reductions				0
Ending balance		9,809	[19]	$ 25,495
Investment, Identifier [Axis]: California Splendor Holdings 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		63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,695
Gross Additions		0
Gross Reductions		0
Ending balance		15,695
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate				15.00%
PIK Rate				15.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				150
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,695	[18]	3,994
Gross Additions				150
Gross Reductions				0
Ending balance		$ 15,695	[19]	$ 4,144
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Total Rate		15.00%
PIK Rate		15.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		208
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,601
Gross Additions		5,208
Gross Reductions		0
Ending balance		$ 9,809
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		14.88%	15.69%	[15],[18]
Spread				10.00%	10.00%	[15],[18]
PIK Rate		4.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(79)		(3)
Amount of Interest, Fees or Dividends Credited to Income		1,088		1,045
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		27,655	[15],[18]	28,000
Gross Additions		6		3
Gross Reductions		78		3
Ending balance		$ 27,583		28,000
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1
Schedule of Investments [Line Items]
PIK Rate	[12]	4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%
PIK Rate		4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 27,583
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
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.38%			11.38%	[15]
Spread		6.00%	[12],[13]	6.00%	6.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		34		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		881	[15]	(9)
Gross Additions		902		1
Gross Reductions		1,801		1
Ending balance		$ (18)	[12],[13]	$ (9)
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		12.50%	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		668		643
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,906		20,090
Gross Additions		11		10
Gross Reductions		180		0
Ending balance		19,737		20,100
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	246
Ending balance	[11]	$ 246
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[11],[12],[13]		6.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (8)
Ending balance	[11],[12],[13]	$ (8)
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.56%	[11],[13]		11.61%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 7,933
Ending balance	[11],[13]	$ 7,913
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.56%	[11],[13]		11.61%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,102
Ending balance	[11],[13]	$ 6,087
Investment, Identifier [Axis]: Central Moloney, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.05%
Spread	[11],[13]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 44,132
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)		1,109		560
Amount of Interest, Fees or Dividends Credited to Income		30		30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,040		8,700
Gross Additions		1,109		560
Gross Reductions		0		0
Ending balance		$ 12,149		$ 9,260
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.48%
Spread		9.00%	[12],[13]	9.00%	9.00%	[15],[16]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		3		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%	[13]	13.75%	14.48%	[15]
Spread		9.00%	[13]	9.00%	9.00%	[15]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				517
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 17,574	[15]	14,954
Gross Additions				6
Gross Reductions				0
Ending balance		$ 21,974	[13]	14,960
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		14.48%
Spread		9.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		257
Amount of Interest, Fees or Dividends Credited to Income		522
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		21,974
Gross Reductions		0
Ending balance		$ 21,974
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.48%
Spread		9.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(62)
Amount of Interest, Fees or Dividends Credited to Income		281
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,574
Gross Additions		0
Gross Reductions		17,574
Ending balance		0
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)		250		(120)
Amount of Interest, Fees or Dividends Credited to Income		1,464		285
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		29,320	[18]	22,920
Gross Additions		250		0
Gross Reductions		0		120
Ending balance		29,570	[19]	22,800
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)		140		120
Amount of Interest, Fees or Dividends Credited to Income		23		23
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,860	[18],[28]	2,710
Gross Additions		140		120
Gross Reductions		0		0
Ending balance		$ 3,000	[19],[29]	$ 2,830
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.49%
Spread		6.00%	[12],[13]	6.00%	6.00%	[15],[16]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(22)		0
Amount of Interest, Fees or Dividends Credited to Income		25		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16]	0
Gross Additions		22		0
Gross Reductions		22		0
Ending balance		$ 0	[12],[13]	$ 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.49%	[13]	12.86%	13.49%	[15]
Spread		8.00%	[13]	8.00%	8.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(6)
Amount of Interest, Fees or Dividends Credited to Income		533		540
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,620	[15]	16,945
Gross Additions		0		6
Gross Reductions		0		6
Ending balance		$ 15,620	[13]	16,945
Investment, Identifier [Axis]: Chandler Signs Holdings, LLC, Class A Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				210
Amount of Interest, Fees or Dividends Credited to Income				36
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,790
Gross Additions				210
Gross Reductions				0
Ending balance				2,000
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.56%	[11],[13]		12.60%	[14],[15],[40]
Spread		7.00%	[11],[13]		7.00%	[14],[15],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[40]	$ 1,988
Ending balance	[11],[13]	$ 1,575
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.58%	[11],[13]		12.66%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 35,064
Ending balance	[11],[13]	$ 34,630
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.58%	[11],[13]		12.66%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,943
Ending balance	[11],[13]	$ 1,919
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.58%	[11],[13]		12.66%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 4,695
Ending balance	[11],[13]	4,637
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)		350		210
Amount of Interest, Fees or Dividends Credited to Income		0		196
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,690	[18]	13,340
Gross Additions		350		210
Gross Reductions		0		0
Ending balance		$ 16,040	[19]	$ 13,550
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(122)		(9)
Amount of Interest, Fees or Dividends Credited to Income		264		149
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,694		5,694
Gross Additions		122		9
Gross Reductions		122		9
Ending balance		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)		(1,140)		(1,050)
Amount of Interest, Fees or Dividends Credited to Income		0		50
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,200	[18]	8,220
Gross Additions		0		0
Gross Reductions		1,140		1,050
Ending balance		4,060	[19]	7,170
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)		(179)		220
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,129	[28]	610
Gross Additions		0		220
Gross Reductions		179		0
Ending balance		$ 950	[29]	$ 830
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%
Spread				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		1		1
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
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		13.79%	11.50%
Spread				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		261		369
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,422		10,440
Gross Additions		0		11
Gross Reductions		12		480
Ending balance		$ 8,410		$ 9,971
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		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		25		26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,004		1,039
Gross Additions		0		0
Gross Reductions		9		8
Ending balance		995		1,031
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[21],[26]	16
Ending balance	[11],[20],[27]	16
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)		1,470		1,062
Amount of Interest, Fees or Dividends Credited to Income		312		780
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		16,000	[18]	24,637
Gross Additions		1,470		1,063
Gross Reductions		0		0
Ending balance		$ 17,470	[19]	$ 25,700
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.63%	[13]	10.88%	11.69%	[15]
Spread		6.00%	[13]	6.00%	6.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		134		127
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,560	[15]	4,560
Gross Additions		0		0
Gross Reductions		800		0
Ending balance		$ 3,760	[13]	$ 4,560
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(11)		(11)
Amount of Interest, Fees or Dividends Credited to Income		400		396
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,274		19,274
Gross Additions		11		11
Gross Reductions		11		11
Ending balance		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)		1,730		970
Amount of Interest, Fees or Dividends Credited to Income		612		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		72,470	[18],[28]	58,180
Gross Additions		1,730		970
Gross Reductions		0		0
Ending balance		$ 74,200	[19],[29]	$ 59,150
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%		15.50%
Spread				10.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		6		11
Amount of Interest, Fees or Dividends Credited to Income		24		59
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	1,462
Gross Additions		1,264		13
Gross Reductions		1,264		421
Ending balance		$ 0	[12]	$ 1,054
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		15.50%	12.50%
Spread				10.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(3)		(20)
Amount of Interest, Fees or Dividends Credited to Income		1,312		1,577
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		42,073		40,801
Gross Additions		3		20
Gross Reductions		639		444
Ending balance		41,437		40,377
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)				(960)
Amount of Interest, Fees or Dividends Credited to Income				(1,273)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				9,160
Gross Additions				0
Gross Reductions				960
Ending balance				8,200
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,400
Gross Additions		0
Gross Reductions		0
Ending balance		2,400
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)		650
Amount of Interest, Fees or Dividends Credited to Income		94
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,680
Gross Additions		650
Gross Reductions		0
Ending balance		$ 8,330
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		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		2
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
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		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		662		704
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,627		23,151
Gross Additions		339		14
Gross Reductions		1,995		315
Ending balance		19,971		22,850
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)		(430)		(1,390)
Amount of Interest, Fees or Dividends Credited to Income		0		158
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,450	[18]	19,830
Gross Additions		0		0
Gross Reductions		430		1,390
Ending balance		$ 14,020	[19]	$ 18,440
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13]	14.48%
Spread	[13]	9.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[13]	$ 3,162
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.48%
Spread		9.00%		9.00%	9.00%	[15],[16],[26]
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],[16],[26]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%		13.75%	14.48%	[15]
Spread		9.00%		9.00%	9.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		69		(3)
Amount of Interest, Fees or Dividends Credited to Income		127		180
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,454	[15]	5,241
Gross Additions		0		3
Gross Reductions		292		375
Ending balance		3,162		4,869
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		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,454
Gross Additions		0
Gross Reductions		0
Ending balance		$ 7,454
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	[16]	0
Gross Additions		0
Gross Reductions		0
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%			13.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		595
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,034
Gross Additions		8
Gross Reductions		0
Ending balance		$ 17,042
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.47%	[11],[13],[41]		13.52%	[14],[15],[42]
Spread		8.00%	[11],[13],[41]		8.00%	[14],[15],[42]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[42]	$ 4,848
Ending balance	[11],[13],[41]	$ 4,887
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15]				13.52%
Spread		8.00%	[11],[12],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 17,757
Ending balance	[11],[12],[13]	$ (167)
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	13.46%
Spread	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 17,830
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],[32],[36],[37]	4,352
Ending balance	[19],[34],[38],[39]	3,822
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		0
Amount of Unrealized Gain/(Loss)		(51)		0
Amount of Interest, Fees or Dividends Credited to Income		74		123
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,352		7,657
Gross Additions		0		0
Gross Reductions		530		876
Ending balance		3,822		6,781
Investment, Identifier [Axis]: Construction Supply Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	23,135
Ending balance	[11]	22,430
Investment, Identifier [Axis]: Copper Trail Energy Fund I, LP - CTMH, LP Interests (CTMH, 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				588
Gross Additions				0
Gross Reductions				0
Ending balance				588
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, 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	[18],[32],[36],[37]	568
Gross Additions		0
Gross Reductions		0
Ending balance	[19],[34],[38],[39]	$ 568
Investment, Identifier [Axis]: Corel Corporation, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[8],[13],[34],[35]	10.44%
Spread	[8],[13],[34],[35]	5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13],[34],[35]	$ 1,198
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)		1,020
Amount of Interest, Fees or Dividends Credited to Income		896
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,000
Gross Additions		1,020
Gross Reductions		0
Ending balance	[19]	$ 16,020
Investment, Identifier [Axis]: Cybermedia Technologies, 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		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]	0
Gross Additions		0
Gross Reductions		0
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		946
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		28,389
Gross Additions		17
Gross Reductions		362
Ending balance		28,044
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)		(1,720)		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		7,660		7,260
Gross Additions		0		0
Gross Reductions		1,720		0
Ending balance		$ 5,940		$ 7,260
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(10)		(11)
Amount of Interest, Fees or Dividends Credited to Income		580		647
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,800		21,200
Gross Additions		10		11
Gross Reductions		10		11
Ending balance		$ 18,800		21,200
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[11]		8.00%	[14]
PIK Rate		8.00%	[11]		8.00%	[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	$ 260
Ending balance	[11]	$ 0
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%	[14],[18]
PIK Rate		10.00%	[11],[19]		10.00%	[14],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[18]	$ 1,284
Ending balance	[11],[19]	855
Investment, Identifier [Axis]: Dalton US Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	830
Ending balance	[11]	830
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)		80		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		70		2,670
Gross Additions		80		0
Gross Reductions		0		0
Ending balance		$ 150		$ 2,670
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		7.50%		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		6		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		447		223
Gross Additions		225		227
Gross Reductions		180		0
Ending balance		$ 492		$ 450
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		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		247		254
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,587		7,789
Gross Additions		37		39
Gross Reductions		67		67
Ending balance		7,557		7,761
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		50		50
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		$ 9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.38%	[13]	14.75%	15.38%	[15]
Spread		10.00%	[13]	10.00%	10.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		583		564
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,690	[15]	15,523
Gross Additions		22		9
Gross Reductions		1,452		329
Ending balance		13,260	[13]	15,203
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)		(500)		(520)
Amount of Interest, Fees or Dividends Credited to Income		0		171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,740	[18]	22,220
Gross Additions		0		0
Gross Reductions		500		520
Ending balance		$ 20,240		21,700
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		(7)		(7)
Amount of Interest, Fees or Dividends Credited to Income		37		11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,233		0
Gross Additions		1,282		7
Gross Reductions		2,515		7
Ending balance		$ 0	[12]	$ 0
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(11)		(14)
Amount of Interest, Fees or Dividends Credited to Income		906		959
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,543		27,267
Gross Additions		11		14
Gross Reductions		421		405
Ending balance		25,133		26,876
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners - A, 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		2,631	[32],[36],[37]	2,898
Gross Additions				0
Gross Reductions				0
Ending balance		2,631	[34],[38],[39]	2,898
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners - A, LP).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		2,631
Gross Additions		0
Gross Reductions		0
Ending balance		2,631
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				156
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,443	[32],[36],[37]	9,127
Gross Additions				156
Gross Reductions				0
Ending balance		8,443	[34],[38],[39]	9,283
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners, LP).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		8,443
Gross Additions		0
Gross Reductions		0
Ending balance		8,443
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)		0		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		1,580	[14],[28]	1,330
Gross Additions		0		250
Gross Reductions		0		0
Ending balance		$ 1,580	[11],[29]	1,580
Investment, Identifier [Axis]: Dreyfus Government Cash Management
Schedule of Investments [Line Items]
Total Rate		4.94%			4.98%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[43]	$ 13,476
Ending balance	[44]	45,214
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	0
Ending balance	[11]	0
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	60
Ending balance	[11]	60
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	0
Ending balance	[11]	$ 0
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.43%	[11],[13]		10.45%	[14],[15]
Spread		5.00%	[11],[13]		5.00%	[14],[15]
PIK Rate		10.43%	[11],[13]		10.45%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,912
Ending balance	[11],[13]	$ 1,967
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.43%	[11],[13]		12.45%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
PIK Rate		12.43%	[11],[13]		12.45%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,859
Ending balance	[11],[13]	1,926
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)		0		14
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		20		19
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		760	[18],[32],[36],[37]	1,013
Gross Additions		1		15
Gross Reductions		0		52
Ending balance		$ 761	[19],[34],[38],[39]	976
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.45%	[11],[13],[41]		13.50%	[14],[15]
Spread		8.00%	[11],[13],[41]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 927
Ending balance	[11],[13],[41]	$ 2,883
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.45%	[11],[13]		13.50%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 4,596
Ending balance	[11],[13]	$ 4,268
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.45%	[11],[13]		13.50%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 9,167
Ending balance	[11],[13]	$ 8,512
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.45%	[11],[13]		13.50%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,901
Ending balance	[11],[13]	$ 1,765
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.45%	[11],[13]		13.50%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 10,403
Ending balance	[11],[13]	9,660
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)		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		6,090		7,603
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		6,090		7,603
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)		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		1,670	[28]	1,558
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 1,670	[29]	$ 1,558
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.38%
Spread		6.00%	[12],[13]	6.00%	6.00%	[15],[16]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(7)	[15],[16]	(9)
Gross Additions		0		1
Gross Reductions		0		0
Ending balance		$ (7)	[12],[13]	$ (8)
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		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		569		573
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,632		18,594
Gross Additions		13		10
Gross Reductions		470		0
Ending balance		$ 18,175		$ 18,604
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.00%		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		143		144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,252		6,294
Gross Additions		1		1
Gross Reductions		12		11
Ending balance		$ 6,241		6,284
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.74%	[8],[13]		11.79%	[7],[15]
Spread		6.25%	[8],[13]		6.25%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 8,158
Ending balance	[8],[13]	8,998
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],[32],[36],[37]	1,720
Ending balance	[19],[34],[38],[39]	921
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],[32],[36],[37]	899
Ending balance	[19],[34],[38],[39]	898
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],[32],[36],[37]	1,918
Ending balance	[19],[34],[38],[39]	1,843
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],[32],[36],[37]	5,858
Ending balance	[19],[34],[38],[39]	5,672
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund XII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[34],[38],[39]	2,690
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	[18],[32],[36],[37]	1,413
Ending balance	[19],[34],[38],[39]	1,513
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],[32],[36],[37]	4,056
Ending balance	[19],[34],[38],[39]	$ 3,963
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[41]	13.75%
Spread		5.25%	[11],[13],[41]		5.50%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[13],[41]	$ 557
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.66%	[11],[13]		11.98%	[14],[15]
Spread		6.25%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 16,134
Ending balance	[11],[13]	15,912
Investment, Identifier [Axis]: Escalent, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	730
Ending balance	[11]	$ 780
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.00%	[11],[12],[13]		8.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (35)
Ending balance	[11],[12],[13]	$ (33)
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.40%	[11],[13]		13.45%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 26,313
Ending balance	[11],[13]	$ 26,247
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.56%	[11],[13]		12.61%	[14],[15]
Spread		8.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 3,626
Ending balance	[11],[13]	$ 3,643
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.56%	[11],[13]		12.61%	[14],[15]
Spread		8.00%	[11],[13]		7.00%	[14],[15]
PIK Rate	[11],[13]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 43,373
Ending balance	[11],[13]	$ 44,461
Investment, Identifier [Axis]: Fidelity Government Fund
Schedule of Investments [Line Items]
Total Rate		4.97%			5.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[45]	$ 1,678
Ending balance	[46]	$ 3,566
Investment, Identifier [Axis]: Fidelity Treasury
Schedule of Investments [Line Items]
Total Rate		4.95%			4.99%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[47]	$ 70
Ending balance	[44]	3,079
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)		0		3,610
Amount of Interest, Fees or Dividends Credited to Income		680		538
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		27,900	[18]	17,580
Gross Additions		0		3,610
Gross Reductions		0		0
Ending balance		27,900	[19]	$ 21,190
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.25%
Spread				6.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(4)
Amount of Interest, Fees or Dividends Credited to Income				215
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				7,600
Gross Additions				4
Gross Reductions				4
Ending balance				$ 7,600
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.75%
Spread				9.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(11)
Amount of Interest, Fees or Dividends Credited to Income				730
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				21,200
Gross Additions				11
Gross Reductions				11
Ending balance				21,200
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	[32],[36],[37]	3,012
Ending balance	[34],[38],[39]	2,935
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],[32],[36],[37]	3,704
Ending balance	[19],[34],[38],[39]	3,705
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		0
Amount of Unrealized Gain/(Loss)		(77)		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		3,012		3,483
Gross Additions		0		0
Gross Reductions		77		0
Ending balance		2,935		3,483
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		0
Amount of Interest, Fees or Dividends Credited to Income		138		134
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,704		5,848
Gross Additions		1		0
Gross Reductions		0		536
Ending balance		3,705		5,312
Investment, Identifier [Axis]: Fuse, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	0
Ending balance	[8]	$ 0
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]	$ 1,320
Ending balance	[8]	1,231
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)		(1,650)
Amount of Interest, Fees or Dividends Credited to Income		654
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	11,460
Gross Additions		0
Gross Reductions		1,650
Ending balance	[19]	$ 9,810
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.00%			8.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(5)
Amount of Interest, Fees or Dividends Credited to Income		194
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,345
Gross Additions		5
Gross Reductions		5
Ending balance		9,345
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)				450
Amount of Interest, Fees or Dividends Credited to Income				39
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				7,140
Gross Additions				450
Gross Reductions				0
Ending balance				$ 7,590
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)				(6)
Amount of Interest, Fees or Dividends Credited to Income				261
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				11,345
Gross Additions				6
Gross Reductions				6
Ending balance				11,345
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		0
Amount of Interest, Fees or Dividends Credited to Income		42		42
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		44,440		44,440
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 44,440	[19]	$ 44,440
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.48%		10.66%	11.48%
Spread		6.00%		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		70		28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,400		670
Gross Additions		0		295
Gross Reductions		0		0
Ending balance		$ 2,400		$ 965
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.48%		12.66%	13.48%
Spread		8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(12)		(12)
Amount of Interest, Fees or Dividends Credited to Income		1,391		1,280
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		40,493		40,493
Gross Additions		12		12
Gross Reductions		12		12
Ending balance		$ 40,493		40,493
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.93%	[11],[13]		11.96%	[14],[15],[16]
Spread		6.50%	[11],[13]		6.50%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 1,545
Ending balance	[11],[13]	$ 1,364
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.50%	[11],[12],[13]		6.50%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (9)
Ending balance	[11],[12],[13]	$ (7)
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.93%	[11],[13]		11.96%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 10,624
Ending balance	[11],[13]	$ 10,596
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.93%	[11],[13]		11.96%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 952
Ending balance	[11],[13]	$ 950
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		11.93%	[11],[13]		11.96%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 227
Ending balance	[11],[13]	$ 227
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.46%	[11],[13],[41]		11.28%	[14],[15],[48]
Spread		6.00%	[11],[13],[41]		5.75%	[14],[15],[48]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[48]	$ 454
Ending balance	[11],[13],[41]	$ 450
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.48%	[11],[13]		11.38%	[14],[15]
Spread		6.00%	[11],[13]		5.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 301
Ending balance	[11],[13]	$ 297
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.45%	[11],[13]		11.25%	[14],[15]
Spread		6.00%	[11],[13]		5.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 3,615
Ending balance	[11],[13]	3,567
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)		9,840		8,480
Amount of Interest, Fees or Dividends Credited to Income		1,493		1,567
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		96,710	[18]	50,890
Gross Additions		9,840		8,480
Gross Reductions		0		0
Ending balance		$ 106,550	[19]	$ 59,370
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%
Spread		7.00%	[12],[13],[24]	8.50%	7.50%	[15],[16],[25]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		2		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16],[25]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13],[24]	$ 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%	[13],[24]	11.50%	10.50%	[15],[25]
Spread		7.00%	[13],[24]	8.50%	7.50%	[15],[25]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(24)		(24)
Amount of Interest, Fees or Dividends Credited to Income		1,368		1,852
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		54,078	[15],[25]	64,078
Gross Additions		24		24
Gross Reductions		1,624		824
Ending balance		52,478	[13],[24]	63,278
Investment, Identifier [Axis]: Garreco, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(220)
Amount of Interest, Fees or Dividends Credited to Income		28		12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,580		1,800
Gross Additions		0		0
Gross Reductions		0		220
Ending balance		$ 1,580	[19]	$ 1,580
Investment, Identifier [Axis]: Garreco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.50%	[13],[49]	12.00%	9.50%	[15],[50]
Spread		8.00%	[13],[49]	10.00%	8.00%	[15],[50]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		74		112
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,088	[15],[50]	3,826
Gross Additions		0		0
Gross Reductions		0		277
Ending balance		3,088	[13],[49]	3,549
Investment, Identifier [Axis]: Garyline, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	706
Ending balance	[11]	$ 706
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.17%
Spread		6.75%	[11],[13]		6.75%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (256)
Ending balance	[11],[13]	$ 699
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.17%	[11],[13]		12.22%	[14],[15]
Spread		6.75%	[11],[13]		6.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 31,529
Ending balance	[11],[13]	32,066
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)		2,490		580
Amount of Interest, Fees or Dividends Credited to Income		924		718
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,070	[18]	6,790
Gross Additions		2,490		580
Gross Reductions		0		0
Ending balance		$ 11,560	[19],[34],[35]	7,370
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%
Spread	[12],[34],[35]	7.63%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		49
Amount of Interest, Fees or Dividends Credited to Income		102
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance	[12],[34],[35]	$ 0
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[34],[35]	13.00%
Spread	[34],[35]	7.63%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		394
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		40,000
Gross Reductions		0
Ending balance	[34],[35]	40,000
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
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)		(930)		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		2,460		3,780
Gross Additions		0		0
Gross Reductions		930		0
Ending balance		$ 1,530		$ 3,780
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.98%
Spread		9.50%	[12],[13]	9.50%	9.50%	[15],[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		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	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		76		75
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,284		2,284
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		2,284		2,284
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		9.07%	[11],[13]		14.34%	[14],[15],[26]
Spread		3.50%	[11],[13]		9.50%	[14],[15],[26]
PIK Rate		2.50%	[11],[13]		14.34%	[14],[15],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[26]	$ 336
Ending balance	[11],[13]	$ 2,232
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		2.50%	[11],[20]		14.34%	[14],[15],[26]
Spread		2.50%	[11],[20]		9.50%	[14],[15],[26]
PIK Rate		2.50%	[11],[20]		14.34%	[14],[15],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[26]	$ 3,406
Ending balance	[11],[20]	$ 713
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]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (48)
Ending balance	[11],[12],[13]	$ (45)
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.83%	[11],[13]		11.86%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,733
Ending balance	[11],[13]	$ 6,716
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.83%	[11],[13]		11.86%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 16,622
Ending balance	[11],[13]	$ 16,580
Investment, Identifier [Axis]: HOWLCO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.98%	[8],[13],[34],[35]		11.53%	[7],[15],[32],[33]
Spread		6.50%	[8],[13],[34],[35]		6.00%	[7],[15],[32],[33]
PIK Rate	[8],[13],[34],[35]	3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[32],[33]	$ 24,397
Ending balance	[8],[13],[34],[35]	25,049
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,869
Gross Additions		0
Gross Reductions		0
Ending balance		1,869
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				117
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,400
Gross Additions				0
Gross Reductions				0
Ending balance				1,400
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		113
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,225		4,331
Gross Additions		0		113
Gross Reductions		0		508
Ending balance		4,225		3,936
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		3,773		2,332
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		3,773		2,332
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	[32],[36],[37]	315
Ending balance	[34],[38],[39]	315
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	[18],[32],[36],[37]	6,050
Ending balance	[19],[34],[38],[39]	6,050
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[32],[36],[37]	1,869
Ending balance	[19],[34],[38],[39]	1,869
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 HAR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[32],[36],[37]	996
Ending balance	[34],[38],[39]	997
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	[32],[36],[37]	4,225
Ending balance	[19],[34],[38],[39]	4,225
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	[32],[36],[37]	3,773
Ending balance	[34],[38],[39]	3,773
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)		260		210
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,660		3,280
Gross Additions		260		210
Gross Reductions		0		0
Ending balance		4,920		3,490
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)		430		0
Amount of Interest, Fees or Dividends Credited to Income		0		65
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,460		17,460
Gross Additions		430		0
Gross Reductions		0		0
Ending balance		17,890	[19]	17,460
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)		20		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		920	[28]	920
Gross Additions		20		0
Gross Reductions		0		0
Ending balance		$ 940	[29]	$ 920
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.53%	[13]	10.75%	11.65%	[15]
Spread		6.00%	[13]	6.00%	6.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		64		90
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,974	[15]	3,185
Gross Additions		2,182		815
Gross Reductions		2,720		0
Ending balance		$ 1,436	[13]	$ 4,000
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		10.00%	12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(14)		(10)
Amount of Interest, Fees or Dividends Credited to Income		1,444		893
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		45,256		37,800
Gross Additions		14		10
Gross Reductions		14		10
Ending balance		45,256		37,800
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)		(130)		600
Amount of Interest, Fees or Dividends Credited to Income		1		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,340	[18]	2,400
Gross Additions		0		600
Gross Reductions		130		0
Ending balance		$ 3,210	[19]	$ 3,000
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		60		(170)
Amount of Interest, Fees or Dividends Credited to Income		61		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,880		3,000
Gross Additions		60		0
Gross Reductions		0		170
Ending balance		$ 2,940		$ 2,830
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.84%	[11],[13]		15.91%	[14],[15]
Spread		8.25%	[11],[13]		8.25%	[14],[15]
PIK Rate		2.00%	[11],[13]		2.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,581
Ending balance	[11],[13]	7,056
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[32],[37]	$ 13,490
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)		20.00%		20.00%	20.00%	[32],[37]
Profits, percentage (as a percent)		21.75%		21.75%	21.75%	[32],[37]
Amount of Realized Gain/(Loss)		$ (7,107)		$ 0
Amount of Unrealized Gain/(Loss)		6,710		0
Amount of Interest, Fees or Dividends Credited to Income		429		528
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,490		11,758
Gross Additions		0		1,200
Gross Reductions		13,490		0
Ending balance		0		12,958
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		14,400
Gross Additions		0
Gross Reductions		0
Ending balance		$ 14,400
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 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		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]	(35)
Gross Additions		2
Gross Reductions		0
Ending balance	[12]	$ (33)
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		1,232
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		36,934
Gross Additions		22
Gross Reductions		440
Ending balance		$ 36,516
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.75%	[8],[12],[13]		5.75%	[7],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[16]	$ 0
Ending balance	[8],[12],[13]	$ 0
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.93%	[8],[13]		10.96%	[7],[15]
Spread		5.50%	[8],[13]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 9,399
Ending balance	[8],[13]	$ 10,315
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.93%	[8],[13]		10.96%	[7],[15]
Spread		5.50%	[8],[13]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 4,953
Ending balance	[8],[13]	$ 4,941
Investment, Identifier [Axis]: INW Manufacturing, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.31%	[8],[13]		11.36%	[7],[15]
Spread		5.75%	[8],[13]		5.75%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 5,325
Ending balance	[8],[13]	$ 5,670
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		16.53%	[13]		16.59%	[15]
Spread		9.00%	[13]		9.00%	[15]
PIK Rate		2.00%	[13]		2.00%	[15]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		36
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	816
Gross Additions		5
Gross Reductions		0
Ending balance	[13]	$ 821
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.53%	[13]		16.59%	[15]
Spread		9.00%	[13]		9.00%	[15]
PIK Rate		2.00%	[13]		2.00%	[15]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	697
Gross Additions		5
Gross Reductions		0
Ending balance	[13]	$ 702
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		15.53%	[13]		15.59%	[15]
Spread		8.00%	[13]		8.00%	[15]
PIK Rate		2.00%	[13]		2.00%	[15]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		238
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	3,430
Gross Additions		88
Gross Reductions		0
Ending balance	[13]	$ 3,518
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		17.53%	[13]		17.59%	[15]
Spread		10.00%	[13]		10.00%	[15]
PIK Rate		2.00%	[13]		2.00%	[15]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		260
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]	3,430
Gross Additions		88
Gross Reductions		0
Ending balance	[13]	3,518
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	[9]	2,091
Gross Additions		0
Gross Reductions		0
Ending balance	[10]	2,091
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	1,110
Ending balance	[11]	$ 1,210
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.27%	[11],[13],[41]		12.41%	[14],[15],[51]
Spread		7.00%	[11],[13],[41]		7.00%	[14],[15],[51]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[51]	$ 1,571
Ending balance	[11],[13],[41]	$ 1,186
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.25%	[11],[13]		12.45%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 20,637
Ending balance	[11],[13]	$ 20,716
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.21%	[11],[13]		14.25%	[14],[15]
Spread		7.75%	[11],[13]		7.75%	[14],[15]
PIK Rate		1.00%	[11],[13]		1.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 17,334
Ending balance	[11],[13]	17,620
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)		220
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,690
Gross Additions		220
Gross Reductions		0
Ending balance	[11]	17,910
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[28]	690
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate	[14],[18],[28]				10.00%
PIK Rate	[14],[18],[28]				10.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[18],[28]	178
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate	[14],[18],[28]				20.00%
PIK Rate	[14],[18],[28]				20.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[18],[28]	120
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15],[52]				12.22%
Spread	[14],[15],[52]				6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[52]	1,390
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15]				12.22%
Spread	[14],[15]				6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	19,044
Investment, Identifier [Axis]: Infinity X1 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		98		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,000		0
Gross Additions		368		4,000
Gross Reductions		0		0
Ending balance		$ 4,368	[19]	$ 4,000
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%		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		580		183
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,403		0
Gross Additions		10		17,823
Gross Reductions		224		0
Ending balance		$ 17,189		17,823
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.18%	[11],[13]		11.21%	[14],[15]
Spread		5.75%	[11],[13]		5.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,504
Ending balance	[11],[13]	$ 1,501
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.18%	[11],[13]		11.21%	[14],[15]
Spread		5.75%	[11],[13]		5.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 7,752
Ending balance	[11],[13]	7,651
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	656
Ending balance	[11]	$ 430
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[13]		6.25%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (70)
Ending balance	[11],[12],[13]	$ (66)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[13]		6.25%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (57)
Ending balance	[11],[12],[13]	$ (54)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.56%	[11],[13]		11.65%	[14],[15]
Spread		6.25%	[11],[13]		6.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 14,258
Ending balance	[11],[13]	14,124
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	240
Ending balance	[11]	$ 240
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.44%	[11],[13],[41]		13.53%	[14],[15],[53]
Spread		8.00%	[11],[13],[41]		8.00%	[14],[15],[53]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[53]	$ 776
Ending balance	[11],[13],[41]	$ 762
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.48%	[11],[13]		13.55%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 7,177
Ending balance	[11],[13]	$ 7,028
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.48%	[11],[13]		13.55%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 2,887
Ending balance	[11],[13]	2,827
Investment, Identifier [Axis]: Integral Energy Services, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		140
Amount of Interest, Fees or Dividends Credited to Income		11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	160
Gross Additions		140
Gross Reductions		0
Ending balance	[11]	$ 300
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		10.00%	[11],[19]		10.00%	[14]
PIK Rate		10.00%	[11],[19]		10.00%	[14]
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	[14]	300
Gross Additions		9
Gross Reductions		0
Ending balance	[11],[19]	$ 309
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.09%	[11],[13]		13.16%	[14],[15]
Spread		7.50%	[11],[13]		7.50%	[14],[15]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		236
Amount of Interest, Fees or Dividends Credited to Income		511
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	13,891
Gross Additions		267
Gross Reductions		1,355
Ending balance	[11],[13]	12,803
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	0
Ending balance	[11]	$ 0
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.43%	[11],[27],[41]		15.48%	[14],[26],[54]
Spread		10.00%	[11],[27],[41]		10.00%	[14],[26],[54]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[26],[54]	$ 1,781
Ending balance	[11],[27],[41]	$ 1,680
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.43%	[11],[13],[20],[27]		12.46%	[14],[15],[21],[26]
Spread		7.00%	[11],[13],[20],[27]		7.00%	[14],[15],[21],[26]
PIK Rate		12.43%	[11],[13],[20],[27]		12.46%	[14],[15],[21],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[21],[26]	$ 431
Ending balance	[11],[13],[20],[27]	$ 17
Investment, Identifier [Axis]: Intermedia Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.43%	[8],[13]		11.47%	[7],[15]
Spread		6.00%	[8],[13]		6.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 19,570
Ending balance	[8],[13]	$ 26,957
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.96%	[11],[13]		12.00%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 509
Ending balance	[11],[13]	$ 103
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.96%	[11],[13]		12.00%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 16,515
Ending balance	[11],[13]	16,615
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)		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		2,680		1,798
Gross Additions		0		958
Gross Reductions		0		0
Ending balance		$ 2,680		$ 2,756
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		156		151
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,487		4,500
Gross Additions		2		2
Gross Reductions		0		0
Ending balance		$ 4,489		$ 4,502
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		101		105
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,922		3,130
Gross Additions		1		2
Gross Reductions		0		0
Ending balance		$ 2,923		$ 3,132
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		305		294
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
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		677		658
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,503		19,559
Gross Additions		8		9
Gross Reductions		0		0
Ending balance		$ 19,511		$ 19,568
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		380		489
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,273		0
Gross Additions		23		10,836
Gross Reductions		201		0
Ending balance		10,095		10,836
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	0
Ending balance	[8]	$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.03%	[8],[13]		11.04%	[7],[15]
Spread		5.50%	[8],[13]		5.50%	[7],[15]
PIK Rate		8.54%	[8],[13]		8.54%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 2,301
Ending balance	[8],[13]	2,576
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	1,710
Ending balance	[11]	$ 1,270
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.57%	[11],[13],[41]		11.64%	[14],[15],[55]
Spread		6.00%	[11],[13],[41]		6.00%	[14],[15],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[55]	$ 3,137
Ending balance	[11],[13],[41]	$ 7,347
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.55%	[11],[13]		11.61%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 36,000
Ending balance	[11],[13]	$ 35,763
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.55%
Spread	[11],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 3,347
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	1,090
Ending balance	[11]	$ 1,090
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.46%	[11],[13],[17]		12.46%	[14],[15],[56]
Spread		7.00%	[11],[13],[17]		7.00%	[14],[15],[56]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[56]	$ 835
Ending balance	[11],[13],[17]	$ 834
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.48%	[11],[13]		12.46%	[14],[15]
Spread		10.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,974
Ending balance	[11],[13]	$ 144
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.46%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 1,948
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)		240		(120)
Amount of Interest, Fees or Dividends Credited to Income		456		129
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,420	[18]	14,970
Gross Additions		240		0
Gross Reductions		0		120
Ending balance		$ 12,660	[19]	$ 14,850
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.25%
Spread		6.75%	[12]	6.75%	6.75%	[16],[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		3		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16],[26]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12]	$ 0
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%	[13]	14.50%	15.25%	[15],[26]
Spread		6.75%	[13]	6.75%	6.75%	[15],[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(2)
Amount of Interest, Fees or Dividends Credited to Income		76		90
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,998	[15],[26]	2,450
Gross Additions		0		2
Gross Reductions		98		2
Ending balance		1,900	[13]	2,450
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	0
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	0
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	$ 200
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		21.59%	[8],[13],[20]		23.63%	[7],[15],[21]
Spread		16.00%	[8],[13],[20]		18.00%	[7],[15],[21]
PIK Rate		21.59%	[8],[13],[20]		23.63%	[7],[15],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[21]	$ 2,074
Ending balance	[8],[13],[20]	$ 0
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		21.59%	[8],[13],[20]		21.63%	[7],[15],[21]
Spread		16.00%	[8],[13],[20]		16.00%	[7],[15],[21]
PIK Rate		21.59%	[8],[13],[20]		21.63%	[7],[15],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[21]	$ 143
Ending balance	[8],[13],[20]	$ 0
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.31%	[8],[13]		21.63%	[7],[15],[21]
Spread		8.75%	[8],[13]		16.00%	[7],[15],[21]
PIK Rate		6.00%	[8],[13]		21.63%	[7],[15],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[21]	$ 137
Ending balance	[8],[13]	$ 1,945
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[8],[13]	14.31%
Spread	[8],[13]	8.75%
PIK Rate	[8],[13]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[13]	$ 1,182
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)		170		1,010
Amount of Interest, Fees or Dividends Credited to Income		217		71
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,620		5,540
Gross Additions		170		1,010
Gross Reductions		0		0
Ending balance		$ 9,790	[19]	$ 6,550
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%
Spread				11.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(2)		(1)
Amount of Interest, Fees or Dividends Credited to Income		6		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		2		1
Gross Reductions		2		1
Ending balance		$ 0	[12]	$ 0
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%		16.25%	15.00%
Spread				11.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(12)		(5)
Amount of Interest, Fees or Dividends Credited to Income		929		407
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		24,207		9,999
Gross Additions		12		5
Gross Reductions		12		5
Ending balance		24,207		9,999
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		243		221
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,741	[18]	10,741
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 10,741	[19]	$ 10,741
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		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		791		782
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,483		25,432
Gross Additions		13		13
Gross Reductions		0		0
Ending balance		25,496		25,445
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)		1,590		(3,590)
Amount of Interest, Fees or Dividends Credited to Income		572		6,134
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,770	[18]	15,570
Gross Additions		1,590		0
Gross Reductions		0		3,590
Ending balance		$ 24,360	[19]	$ 11,980
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.00%		10.00%	9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(4)		56
Amount of Interest, Fees or Dividends Credited to Income		110		184
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,700		0
Gross Additions		4		6,000
Gross Reductions		204		250
Ending balance		$ 4,500		5,750
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.70%	[11],[13]		14.75%	[14],[15]
Spread		9.25%	[11],[13]		9.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 943
Ending balance	[11],[13]	$ 958
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.70%	[11],[13]		14.75%	[14],[15]
Spread		9.25%	[11],[13]		9.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 6,782
Ending balance	[11],[13]	6,901
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(70)
Amount of Interest, Fees or Dividends Credited to Income		31		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,730	[28]	2,850
Gross Additions		0		0
Gross Reductions		0		70
Ending balance		2,730	[19],[29]	2,780
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)		890		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		9,690		7,220
Gross Additions		890		0
Gross Reductions		0		0
Ending balance		$ 10,580		$ 7,220
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		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		603		780
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,774		20,374
Gross Additions		2		192
Gross Reductions		0		0
Ending balance		$ 19,776		$ 20,566
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.00%		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		87		88
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,805		3,842
Gross Additions		0		0
Gross Reductions		10		9
Ending balance		3,795		3,833
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P., LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[32],[36],[37]	2,988
Ending balance	[19],[34],[38],[39]	$ 2,841
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13]		12.71%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 7,960
Ending balance	[11],[13]	$ 8,647
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13]		12.71%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 5,246
Ending balance	[11],[13]	$ 5,526
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13]		12.71%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 2,803
Ending balance	[11],[13]	$ 2,900
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13]		12.71%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 1,056
Ending balance	[11],[13]	$ 1,126
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13]		12.71%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 10,694
Ending balance	[11],[13]	$ 11,409
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.48%	[11],[13]		15.54%	[14],[15]
Spread		9.00%	[11],[13]		9.00%	[14],[15]
PIK Rate		1.00%	[11],[13]		1.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 3,979
Ending balance	[11],[13]	$ 4,072
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.56%	[8]		10.62%	[7]
Spread		5.00%	[8]		5.00%	[7]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	$ 13,895
Ending balance	[8]	$ 15,179
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.25%	[11],[13]		13.25%	[14],[15]
Spread		4.75%	[11],[13]		4.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 18,778
Ending balance	[11],[13]	19,235
Investment, Identifier [Axis]: Looking Glass Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[32],[37]	25
Ending balance	[34],[39]	25
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[7],[15]				11.46%
Spread	[7],[15]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	2,803
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[7],[15]				11.46%
Spread	[7],[15]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	3,925
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[7],[15]				11.46%
Spread	[7],[15]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	3,464
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[7],[15]				11.46%
Spread	[7],[15]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	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)		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		330		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		330		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
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		13.00%	13.00%	[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		952
Amount of Interest, Fees or Dividends Credited to Income		184		196
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,022	[26]	4,548
Gross Additions		0		952
Gross Reductions		80		116
Ending balance		4,942		5,384
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)		0
Amount of Interest, Fees or Dividends Credited to Income		508
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[32],[36],[37]	14,527
Gross Additions		0
Gross Reductions		0
Ending balance	[19],[34],[38],[39]	$ 14,527
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[34],[39]	5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16],[32],[37]	$ 0
Ending balance	[34],[39]	$ 2,000
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		13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		5,000
Gross Reductions		3,000
Ending balance		2,000
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)		85
Amount of Interest, Fees or Dividends Credited to Income		26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[32],[36],[37]	1,561
Gross Additions		1,795
Gross Reductions		0
Ending balance	[19],[34],[38],[39]	$ 3,356
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.88%	[13],[34],[39]		8.88%	[15],[32],[37]
Spread		3.50%	[13],[34],[39]		3.50%	[15],[32],[37]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		703
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[32],[37]	23,367
Gross Additions		9,520
Gross Reductions		5,000
Ending balance	[13],[34],[39]	27,887
Investment, Identifier [Axis]: MS Private Loan Fund, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(58)
Amount of Interest, Fees or Dividends Credited to Income				370
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				14,833
Gross Additions				0
Gross Reductions				58
Ending balance				14,775
Investment, Identifier [Axis]: MS Private Loan Fund, 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				6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				0
Gross Reductions				0
Ending balance				0
Investment, Identifier [Axis]: MS Private Loan Fund, 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				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				0
Gross Reductions				0
Ending balance				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)		11,197		9,720
Amount of Interest, Fees or Dividends Credited to Income		3,000		3,057
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		174,063	[18],[57]	122,930
Gross Additions		11,197		9,720
Gross Reductions		0		0
Ending balance		185,260	[19],[58]	132,650
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)		(108)		7
Amount of Interest, Fees or Dividends Credited to Income		523		15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,025	[18],[32],[37]	753
Gross Additions		2,501		7
Gross Reductions		108		0
Ending balance		$ 12,418	[19],[34],[39]	760
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[11],[12],[13]		6.75%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[12],[13]	$ 0
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.23%	[11],[13]		12.28%	[14],[15]
Spread		6.75%	[11],[13]		6.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 15,049
Ending balance	[11],[13]	$ 14,853
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.98%
Spread	[11],[13]	7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 4,500
Investment, Identifier [Axis]: Market Force Information, LLC, 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
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.75%
Spread				11.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(6,725)
Amount of Interest, Fees or Dividends Credited to Income				260
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				6,090
Gross Additions				635
Gross Reductions				6,725
Ending balance				$ 0
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				12.00%
PIK Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(1,610)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,610
Gross Additions				0
Gross Reductions				1,610
Ending balance				0
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				327
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,537
Gross Additions				0
Gross Reductions				0
Ending balance				$ 1,537
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate				8.00%
PIK Rate				8.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				148
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				6,010
Gross Additions				117
Gross Reductions				0
Ending balance				6,127
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				3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 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				739
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				23,576
Gross Additions				12
Gross Reductions				0
Ending balance				23,588
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		980
Amount of Interest, Fees or Dividends Credited to Income		382
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,500
Gross Additions		980
Gross Reductions		0
Ending balance	[19]	$ 2,480
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		8.00%	[19]		8.00%	[18]
PIK Rate		8.00%	[19]		8.00%	[18]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		118
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	6,035
Gross Additions		118
Gross Reductions		119
Ending balance	[19]	$ 6,034
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]	0
Gross Additions		0
Gross Reductions		0
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.75%			12.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		724
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,623
Gross Additions		20
Gross Reductions		1,146
Ending balance		$ 22,497
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]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (51)
Ending balance	[11],[12],[13]	$ (48)
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]		11.46%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 22,168
Ending balance	[11],[13]	$ 22,168
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.46%	[11],[13]		12.52%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 17,524
Ending balance	[11],[13]	21,888
Investment, Identifier [Axis]: Mini Melts of America, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	460
Ending balance	[11]	$ 460
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13],[41]	11.57%
Spread		6.25%	[11],[13],[41]		6.25%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (42)
Ending balance	[11],[13],[41]	$ 793
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13],[17]	11.58%
Spread		6.25%	[11],[13],[17]		6.25%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (16)
Ending balance	[11],[13],[17]	$ 683
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.59%	[11],[13]		10.64%	[14],[15]
Spread		5.25%	[11],[13]		5.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 4,825
Ending balance	[11],[13]	$ 4,892
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.59%	[11],[13]		12.64%	[14],[15]
Spread		7.25%	[11],[13]		7.25%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 4,820
Ending balance	[11],[13]	4,892
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[32],[33]	678
Ending balance	[11],[34],[35]	$ 678
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[34],[35]		14.00%	[14],[32],[33]
PIK Rate		4.00%	[11],[34],[35]		4.00%	[14],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[32],[33]	$ 3,938
Ending balance	[11],[34],[35]	$ 3,887
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[34],[35]		14.00%	[14],[32],[33]
PIK Rate		4.00%	[11],[34],[35]		4.00%	[14],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[32],[33]	$ 11,164
Ending balance	[11],[34],[35]	$ 11,021
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[34],[35]		14.00%	[14],[32],[33]
PIK Rate		4.00%	[11],[34],[35]		4.00%	[14],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[32],[33]	$ 17,213
Ending balance	[11],[34],[35]	$ 17,387
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[34],[35]	8.00%
PIK Rate	[11],[34],[35]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[34],[35]	$ 160
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)		0		2,180
Amount of Interest, Fees or Dividends Credited to Income		992		992
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		26,390	[18]	22,830
Gross Additions		0		2,180
Gross Reductions		0		0
Ending balance		$ 26,390	[19]	25,010
Investment, Identifier [Axis]: Mystic Logistics Holdings, 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		1		1
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
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		20		0
Amount of Interest, Fees or Dividends Credited to Income		145		144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,746		5,746
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		5,746		5,746
Investment, Identifier [Axis]: NAPCO Precast, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		330		670
Amount of Interest, Fees or Dividends Credited to Income		32		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,730		11,830
Gross Additions		330		670
Gross Reductions		0		0
Ending balance		12,060		12,500
Investment, Identifier [Axis]: NBG Acquisition Inc, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[21]	115
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)				279
Amount of Interest, Fees or Dividends Credited to Income				13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		53		4,615
Gross Additions				278
Gross Reductions				0
Ending balance		53	[19]	4,893
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,466
Gross Additions		0
Gross Reductions		0
Ending balance		1,466
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)				11
Amount of Interest, Fees or Dividends Credited to Income				(2)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,466	[18]	175
Gross Additions				12
Gross Reductions				0
Ending balance		1,466	[19]	$ 187
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		53
Gross Additions		0
Gross Reductions		0
Ending balance		$ 53
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		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		63		62
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
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC (NVS), Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				3,520
Amount of Interest, Fees or Dividends Credited to Income				125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				7,700
Gross Additions				3,520
Gross Reductions				0
Ending balance				$ 11,220
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC (NVS), Secured Debt 1
Schedule of Investments [Line Items]
Spread				7.00%
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
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC (NVS), Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(10)
Amount of Interest, Fees or Dividends Credited to Income				613
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				20,094
Gross Additions				10
Gross Reductions				10
Ending balance				$ 20,094
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC (NVS), Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(5)
Amount of Interest, Fees or Dividends Credited to Income				320
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				10,500
Gross Additions				5
Gross Reductions				5
Ending balance				10,500
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		4,390
Amount of Interest, Fees or Dividends Credited to Income		362
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	15,020
Gross Additions		4,390
Gross Reductions		0
Ending balance	[19]	$ 19,410
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.48%
Spread		7.00%	[12],[13]		7.00%	[15],[16]
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	[15],[16]	0
Gross Additions		0
Gross Reductions		0
Ending balance	[12],[13]	$ 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%			12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(15)
Amount of Interest, Fees or Dividends Credited to Income		778
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,794
Gross Additions		15
Gross Reductions		15
Ending balance		$ 25,794
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.50%			12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(5)
Amount of Interest, Fees or Dividends Credited to Income		315
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,500
Gross Additions		5
Gross Reductions		5
Ending balance		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)		1,860		1,880
Amount of Interest, Fees or Dividends Credited to Income		103		131
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,350	[18]	1,110
Gross Additions		1,860		1,880
Gross Reductions		0		0
Ending balance		$ 8,210	[19]	2,990
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		2		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		1,600		0
Gross Reductions		0		0
Ending balance		$ 1,600		$ 0
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%	10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		1,000
Amount of Interest, Fees or Dividends Credited to Income		261		320
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,751		8,477
Gross Additions		13		1,022
Gross Reductions		0		629
Ending balance		$ 9,764		8,870
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]		7.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (8)
Ending balance	[11],[12],[13]	$ (8)
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]		7.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[12],[13]	$ 0
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.48%	[11],[13]		12.54%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 20,467
Ending balance	[11],[13]	28,786
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[15]				12.52%
Spread	[14],[15]				7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	7,222
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(410)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,150		8,040
Gross Additions				0
Gross Reductions				410
Ending balance		5,150		7,630
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		960
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,240
Gross Additions		960
Gross Reductions		0
Ending balance		10,200
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 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				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,240		5,150
Gross Additions				0
Gross Reductions				0
Ending balance		10,200		$ 5,150
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 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		5,150
Gross Additions		0
Gross Reductions		0
Ending balance		$ 5,150
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.98%	[13]	11.25%	11.98%	[15]
Spread		6.50%	[13]	6.50%	6.50%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		111		122
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,600	[15]	4,399
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 3,600	[13]	$ 4,399
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		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		562		556
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,426		18,414
Gross Additions		3		3
Gross Reductions		0		0
Ending balance		18,429		18,417
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)		4,840		2,290
Amount of Interest, Fees or Dividends Credited to Income		675		675
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		36,380	[18]	22,810
Gross Additions		4,840		2,290
Gross Reductions		0		0
Ending balance		$ 41,220	[19]	$ 25,100
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(10)		(13)
Amount of Interest, Fees or Dividends Credited to Income		396		485
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,750		15,750
Gross Additions		10		13
Gross Reductions		760		763
Ending balance		$ 12,000		15,000
Investment, Identifier [Axis]: Obra Capital, Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[8]	11.44%
Spread	[8]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	$ 15,258
Investment, Identifier [Axis]: Obra Capital, Inc. (f/k/a Vida Capital, Inc.), Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7]				11.47%
Spread	[7]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	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
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Preferred Stock
Schedule of Investments [Line Items]
Total Rate		7.00%		7.00%	7.00%
PIK Rate		7.00%		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
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]	12.00%	12.00%	[21]
PIK Rate		12.00%	[20]	12.00%	12.00%	[21]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(6)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 1,493	[21]	569
Gross Additions				0
Gross Reductions				6
Ending balance		$ 1,298	[20]	$ 563
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(42)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		326
Gross Additions		0
Gross Reductions		43
Ending balance		$ 283
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]	12.00%	12.00%	[21]
PIK Rate		12.00%	[20]	12.00%	12.00%	[21]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(6)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 716	[21]	580
Gross Additions				0
Gross Reductions				6
Ending balance		$ 622	[20]	$ 574
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(43)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		332
Gross Additions		0
Gross Reductions		43
Ending balance		$ 289
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]	12.00%	12.00%	[21]
PIK Rate		12.00%	[20]	12.00%	12.00%	[21]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(14)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 332	[21]	1,249
Gross Additions				0
Gross Reductions				13
Ending balance		$ 289	[20]	$ 1,236
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(93)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		716
Gross Additions		0
Gross Reductions		94
Ending balance		$ 622
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]	12.00%	12.00%	[21]
PIK Rate		12.00%	[20]	12.00%	12.00%	[21]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(28)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 326	[21]	2,606
Gross Additions				0
Gross Reductions				29
Ending balance		$ 283	[20]	$ 2,577
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(195)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,493
Gross Additions		0
Gross Reductions		195
Ending balance		$ 1,298
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%	[20]	10.00%	10.00%	[21]
PIK Rate		10.00%	[20]	10.00%	10.00%	[21]
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		305	[21]	305
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		305	[20]	305
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
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		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,128		1,056
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 1,128		$ 1,056
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13]	16.48%
Spread	[13]	11.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[13]	$ 5,334
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		16.48%
Spread		11.00%		11.00%	11.00%	[15],[16],[26]
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],[16],[26]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.48%		15.75%	16.48%	[15]
Spread		11.00%		11.00%	11.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		61		0
Amount of Interest, Fees or Dividends Credited to Income		227		219
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,350	[15]	5,559
Gross Additions		64		3
Gross Reductions		80		80
Ending balance		5,334		5,482
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)		(710)		1,750
Amount of Interest, Fees or Dividends Credited to Income		60		269
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,050	[18],[28]	11,750
Gross Additions		0		1,750
Gross Reductions		710		0
Ending balance		$ 16,340	[19],[29]	$ 13,500
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		16.48%
Spread		11.00%	[12],[13]	11.00%	11.00%	[15],[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		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ 0
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.48%	[13]	15.75%	16.48%	[15]
Spread		11.00%	[13]	11.00%	11.00%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(12)		0
Amount of Interest, Fees or Dividends Credited to Income		926		924
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,040	[15]	23,429
Gross Additions		12		17
Gross Reductions		92		800
Ending balance		21,960	[13]	22,646
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[21]	57
Ending balance	[11],[20]	46
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
Investment, Identifier [Axis]: Other, Control Investments
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
Investment, Identifier [Axis]: Other, Controlled Investments
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
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)		(1,110)		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		16,980		18,950
Gross Additions		0		0
Gross Reductions		1,110		0
Ending balance		15,870		18,950
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)		0		(68)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		368	[28]	238
Gross Additions		0		0
Gross Reductions		0		68
Ending balance		$ 368	[29]	$ 170
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.23%
Spread		8.75%	[12],[13]	7.00%	8.75%	[15],[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		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ 0
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.23%	[13]	11.38%	14.23%	[15]
Spread		8.75%	[13]	7.00%	8.75%	[15]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(14)		(13)
Amount of Interest, Fees or Dividends Credited to Income		726		629
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,877	[15]	21,655
Gross Additions		14		13
Gross Reductions		258		13
Ending balance		$ 19,633	[13]	21,655
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.77%	[11],[13],[34],[35],[41]		12.80%	[14],[15],[32],[33],[59]
Spread		7.25%	[11],[13],[34],[35],[41]		7.25%	[14],[15],[32],[33],[59]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[32],[33],[59]	$ 2,998
Ending balance	[11],[13],[34],[35],[41]	$ 3,022
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.84%	[11],[13],[34],[35]		12.88%	[14],[15],[32],[33]
Spread		7.25%	[11],[13],[34],[35]		7.25%	[14],[15],[32],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[32],[33]	$ 26,263
Ending balance	[11],[13],[34],[35]	21,707
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[15],[16]				5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	0
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[15],[60]				11.24%
Spread	[14],[15],[60]				5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[60]	3,186
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[15]				11.25%
Spread	[14],[15]				5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	18,490
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)		5,050		280
Amount of Interest, Fees or Dividends Credited to Income		2,829		2,879
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		44,090	[18]	43,260
Gross Additions		5,050		280
Gross Reductions		0		0
Ending balance		$ 49,140	[19]	$ 43,540
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		5
Amount of Interest, Fees or Dividends Credited to Income		122		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,500		0
Gross Additions		1,500		3,500
Gross Reductions		0		0
Ending balance		$ 5,000		$ 3,500
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		19		38
Amount of Interest, Fees or Dividends Credited to Income		633		142
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,000		0
Gross Additions		4,000		11,500
Gross Reductions		0		0
Ending balance		$ 24,000		$ 11,500
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(8)		(20)
Amount of Interest, Fees or Dividends Credited to Income		848		868
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		27,681		28,681
Gross Additions		8		20
Gross Reductions		8		1,020
Ending balance		27,681		27,681
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		316
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,540
Gross Additions		0
Gross Reductions		0
Ending balance	[19]	$ 12,540
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		8.00%			8.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		444
Gross Additions		1
Gross Reductions		240
Ending balance		$ 205
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		1,022
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		30,339
Gross Additions		15
Gross Reductions		0
Ending balance		30,354
Investment, Identifier [Axis]: Power System Solutions, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	1,160
Ending balance	[11]	$ 1,690
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[11],[12],[13]		6.75%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (82)
Ending balance	[11],[12],[13]	$ (77)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.82%
Spread		6.50%	[11],[13]		6.75%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (82)
Ending balance	[11],[13]	$ 6,170
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.80%	[11],[13]		12.12%	[14],[15]
Spread		6.50%	[11],[13]		6.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 18,418
Ending balance	[11],[13]	$ 18,372
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.28%	[11],[13]		12.28%	[14],[15]
Spread		6.85%	[11],[13]		6.85%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 7,960
Ending balance	[11],[13]	$ 7,940
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.15%	[11],[13]		12.20%	[14],[15]
Spread		6.85%	[11],[13]		6.85%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 760
Ending balance	[11],[13]	$ 758
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.55%
Spread	[11],[13]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 762
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)		0		(90)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		510		590
Gross Additions		0		0
Gross Reductions		0		90
Ending balance		510		500
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)		0		(1,940)
Amount of Interest, Fees or Dividends Credited to Income		246		286
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,750	[18]	12,420
Gross Additions		0		0
Gross Reductions		0		1,940
Ending balance		$ 10,750	[19]	10,480
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 5,835
Investment, Identifier [Axis]: Principle Environmental, 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		200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,829
Gross Additions		6
Gross Reductions		0
Ending balance		5,835
Investment, Identifier [Axis]: Principle Environmental, 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				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				$ 0
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
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				198
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,829		5,806
Gross Additions				6
Gross Reductions				0
Ending balance				5,812
Investment, Identifier [Axis]: Purge Rite, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	3,281
Ending balance	[11]	$ 3,281
Investment, Identifier [Axis]: Purge Rite, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.00%	[11],[12],[13]		8.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (47)
Ending balance	[11],[12],[13]	$ (44)
Investment, Identifier [Axis]: Purge Rite, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.64%	[11],[13]		13.70%	[14],[15]
Spread		8.00%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 9,610
Ending balance	[11],[13]	9,745
Investment, Identifier [Axis]: Quality Lease Service, 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		460		525
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		460		525
Investment, Identifier [Axis]: Quality Lease Service, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(3)
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
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.33%	[11],[13],[41]		12.22%	[14],[15],[52]
Spread		6.75%	[11],[13],[41]		6.75%	[14],[15],[52]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[52]	$ 772
Ending balance	[11],[13],[41]	$ 1,209
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.18%	[11],[13]		12.21%	[14],[15]
Spread		6.75%	[11],[13]		6.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 12,512
Ending balance	[11],[13]	$ 12,645
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.17%	[11],[13]		13.21%	[14],[15]
Spread		7.75%	[11],[13]		7.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 534
Ending balance	[11],[13]	$ 2,639
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.18%	[11],[13]		13.19%	[14],[15]
Spread		7.75%	[11],[13]		7.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 13,951
Ending balance	[11],[13]	$ 13,500
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.18%	[11],[13]		13.19%	[14],[15]
Spread		7.75%	[11],[13]		7.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 559
Ending balance	[11],[13]	$ 541
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.07%	[8],[13]		11.14%	[7],[15]
Spread		5.50%	[8],[13]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 14,715
Ending balance	[8],[13]	$ 12,560
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.82%	[11],[13]		18.47%	[14],[15],[61]
Spread		6.50%	[11],[13]		6.50%	[14],[15],[61]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[61]	$ 3,109
Ending balance	[11],[13]	$ 1,714
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.82%	[11],[13]		11.88%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 39,376
Ending balance	[11],[13]	39,552
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)		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		3,710	[28]	3,620
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		3,710	[29]	3,620
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)		0		(4,950)
Amount of Interest, Fees or Dividends Credited to Income		6		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		14,880
Gross Additions		0		0
Gross Reductions		0		4,950
Ending balance		$ 0		9,930
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		8		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(26)	[16]	(35)
Gross Additions		2		2
Gross Reductions		0		0
Ending balance		$ (24)	[12]	$ (33)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(5,999)		0
Amount of Interest, Fees or Dividends Credited to Income		1,083		1,128
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		30,798		35,404
Gross Additions		20		19
Gross Reductions		6,449		225
Ending balance		24,369		35,198
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, 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		0
Gross Additions				0
Gross Reductions				0
Ending balance		$ 0		0
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Secured Debt
Schedule of Investments [Line Items]
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
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[11],[12],[13]		6.50%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[12],[13]	$ 0
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.09%	[11],[13]		12.16%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 3,314
Ending balance	[11],[13]	$ 3,318
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.09%	[11],[13]		14.16%	[14],[15]
Spread		8.50%	[11],[13]		8.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 3,266
Ending balance	[11],[13]	$ 3,270
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.24%	[11],[13]		13.54%	[14],[15]
Spread		5.75%	[11],[13]		6.00%	[14],[15]
PIK Rate		2.00%	[11],[13]		2.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 5,744
Ending balance	[11],[13]	$ 5,799
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.24%	[11],[13]		13.54%	[14],[15]
Spread		5.75%	[11],[13]		6.00%	[14],[15]
PIK Rate		2.00%	[11],[13]		2.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 8,086
Ending balance	[11],[13]	7,954
Investment, Identifier [Axis]: SI East, LLC (Stavig), 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				343
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				13,650
Gross Additions				0
Gross Reductions				0
Ending balance				13,650
Investment, Identifier [Axis]: SI East, LLC (Stavig), 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				7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0
Investment, Identifier [Axis]: SI East, LLC (Stavig), Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				9.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(33)
Amount of Interest, Fees or Dividends Credited to Income				2,144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				89,786
Gross Additions				33
Gross Reductions				5,283
Ending balance				84,536
Investment, Identifier [Axis]: SI East, 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		117
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	19,170
Gross Additions		0
Gross Reductions		0
Ending balance	[19]	$ 19,170
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%			11.25%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(1)
Amount of Interest, Fees or Dividends Credited to Income		39
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,125
Gross Additions		1
Gross Reductions		1
Ending balance		$ 1,125
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.45%	[62]		12.47%	[63]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(14)
Amount of Interest, Fees or Dividends Credited to Income		1,730
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[63]	54,536
Gross Additions		14
Gross Reductions		14
Ending balance	[62]	54,536
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	500
Ending balance	[11]	$ 610
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.96%
Spread		7.50%	[11],[13]		8.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[13]	$ 958
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.96%	[11],[13]		13.72%	[14],[15]
Spread		7.50%	[11],[13]		8.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 15,728
Ending balance	[11],[13]	$ 15,688
Investment, Identifier [Axis]: Short-term portfolio investments, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[64]	8.68%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[64]	$ 103,383
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)		(74)		260
Amount of Interest, Fees or Dividends Credited to Income		234		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,310		1,530
Gross Additions		0		260
Gross Reductions		530		0
Ending balance		$ 1,780		$ 1,790
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		108		(9)
Amount of Interest, Fees or Dividends Credited to Income		548		492
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,440		13,840
Gross Additions		7,600		9
Gross Reductions		160		249
Ending balance		18,880		13,600
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)				(50)
Amount of Interest, Fees or Dividends Credited to Income				11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,280
Gross Additions				0
Gross Reductions				50
Ending balance				$ 1,230
Investment, Identifier [Axis]: Sonic Systems International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.26%
Spread				7.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(17)
Amount of Interest, Fees or Dividends Credited to Income				499
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				15,769
Gross Additions				17
Gross Reductions				17
Ending balance				15,769
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	836
Ending balance	[11]	$ 835
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[15]				11.46%
Spread		6.00%	[11],[12],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 394
Ending balance	[11],[12],[13]	$ (48)
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]		11.70%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 34,886
Ending balance	[11],[13]	$ 33,249
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.04%	[8],[13]		11.04%	[7],[15]
Spread		5.50%	[8],[13]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 7,527
Ending balance	[8],[13]	$ 8,005
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.19%	[8],[13]		11.28%	[7],[15]
Spread		5.75%	[8],[13]		5.75%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 8,977
Ending balance	[8],[13]	9,188
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	[14]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[11]	$ 0
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.50%	[11],[20]	13.69%	8.50%	[14],[21]
Spread				8.50%
PIK Rate		8.50%	[11],[20]		8.50%	[14],[21]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1,457)		0
Amount of Interest, Fees or Dividends Credited to Income		0		108
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,190	[14],[21]	4,556
Gross Additions		0		0
Gross Reductions		1,457		0
Ending balance		1,733	[11],[20]	4,556
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)		0		470
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,940		4,500
Gross Additions		1		470
Gross Reductions		0		0
Ending balance		$ 5,941		$ 4,970
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		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		633		652
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,427		21,378
Gross Additions		11		17
Gross Reductions		0		1,000
Ending balance		$ 20,438		20,395
Investment, Identifier [Axis]: Team Public Choices, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.58%	[8],[13]		10.88%	[7],[15]
Spread		5.00%	[8],[13]		5.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 14,717
Ending balance	[8],[13]	14,785
Investment, Identifier [Axis]: Tectonic Financial, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	5,030
Ending balance	[19]	5,030
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(810)
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		7,681
Gross Additions		0		0
Gross Reductions		0		810
Ending balance		0		6,871
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		111
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		333
Gross Reductions		0		0
Ending balance		0		$ 333
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)		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
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[27]	12.00%	12.00%	[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		56		55
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,726	[26]	1,840
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 1,726	[27]	$ 1,840
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[27]	12.00%	12.00%	[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(6,323)		0
Amount of Interest, Fees or Dividends Credited to Income		461		459
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,262	[26]	15,120
Gross Additions		0		3
Gross Reductions		6,323		0
Ending balance		7,939	[27]	15,123
Investment, Identifier [Axis]: Televerde, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(1,415)		1,191
Amount of Interest, Fees or Dividends Credited to Income		0		171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,734	[18]	5,408
Gross Additions		0		1,191
Gross Reductions		1,415		0
Ending balance		3,319	[19]	6,599
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		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		1,794		1,794
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		1,794		1,794
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[28]	2,840
Ending balance	[11],[29]	2,680
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				80
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
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		172
Ending balance		236
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		26
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
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	6,400
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		172
Gross Additions		64
Gross Reductions		0
Ending balance		$ 236
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		5		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		150		106
Gross Additions		641		1,321
Gross Reductions		800		1,440
Ending balance		$ (9)	[12]	$ (13)
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		12.00%	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		253		293
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,347		9,442
Gross Additions		7		7
Gross Reductions		401		200
Ending balance		6,953		9,249
Investment, Identifier [Axis]: Titan Meter Midco Corp., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	$ 1,219
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[13]	$ (124)
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.82%
Spread	[11],[13]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 33,007
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)		(1,130)		1,510
Amount of Interest, Fees or Dividends Credited to Income		29		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,740	[18]	7,800
Gross Additions		0		1,506
Gross Reductions		1,130		0
Ending balance		$ 11,610	[19]	9,306
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.50%
Amount of Realized Gain/(Loss)		$ 0		0
Amount of Unrealized Gain/(Loss)		0		(1)
Amount of Interest, Fees or Dividends Credited to Income		1		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[16]	0
Gross Additions		0		1
Gross Reductions		0		1
Ending balance		$ 0	[12]	$ 0
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		77		(5)
Amount of Interest, Fees or Dividends Credited to Income		252		242
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,920		7,920
Gross Additions		0		5
Gross Reductions		0		5
Ending balance		$ 7,920		7,920
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.49%	[8],[13],[20]		12.53%	[7],[15],[21]
Spread		7.15%	[8],[13],[20]		7.15%	[7],[15],[21]
PIK Rate		6.00%	[8],[13],[20]		6.00%	[7],[15],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[21]	$ 3,333
Ending balance	[8],[13],[20]	3,790
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[21]	0
Ending balance	[8],[20]	$ 0
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[13]		11.46%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 23,101
Ending balance	[11],[13]	$ 23,065
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.93%	[11],[13]		11.96%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 9,017
Ending balance	[11],[13]	$ 8,972
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.93%	[11],[13]		11.96%	[14],[15]
Spread		6.50%	[11],[13]		6.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 4,689
Ending balance	[11],[13]	4,677
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
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate		20.00%	[8],[19]	20.00%	20.00%	[7],[18]
PIK Rate		20.00%	[8],[19]	20.00%	20.00%	[7],[18]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(107)
Amount of Interest, Fees or Dividends Credited to Income		132		107
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,833	[7],[18]	2,833
Gross Additions		132		107
Gross Reductions		0		107
Ending balance		$ 2,965	[8],[19]	$ 2,833
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2
Schedule of Investments [Line Items]
Total Rate		20.00%	[8]	20.00%	20.00%	[7]
PIK Rate		20.00%	[8]	20.00%	20.00%	[7]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		385
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,698	[7]	1,991
Gross Additions		0		385
Gross Reductions		0		0
Ending balance		$ 3,698	[8]	$ 2,376
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3
Schedule of Investments [Line Items]
Total Rate		19.00%	[8]	19.00%	19.00%	[7]
PIK Rate		19.00%	[8]	19.00%	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
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4
Schedule of Investments [Line Items]
Total Rate		13.50%	[8]	13.50%	13.50%	[7]
PIK Rate		13.50%	[8]	13.50%	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
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt
Schedule of Investments [Line Items]
Total Rate				15.00%
PIK Rate				15.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				262
Amount of Interest, Fees or Dividends Credited to Income				91
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				4,592
Gross Additions				353
Gross Reductions				0
Ending balance				$ 4,945
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[8]		15.00%	[7]
PIK Rate		15.00%	[8]		15.00%	[7]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		64
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	3,889
Gross Additions		65
Gross Reductions		0
Ending balance	[8]	$ 3,954
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%	[8]		15.00%	[7]
PIK Rate		15.00%	[8]		15.00%	[7]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]	1,908
Gross Additions		32
Gross Reductions		0
Ending balance	[8]	1,940
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.22%
Spread				7.50%
PIK Rate				2.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				23
Amount of Interest, Fees or Dividends Credited to Income				12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				382
Gross Additions				25
Gross Reductions				0
Ending balance				$ 407
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				14.22%
Spread				7.50%
PIK Rate				2.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				102
Amount of Interest, Fees or Dividends Credited to Income				62
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,712
Gross Additions				112
Gross Reductions				3
Ending balance				1,821
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP, LP Interests
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		5,694	[32],[36],[37]	5,855
Gross Additions		0		530
Gross Reductions		0		197
Ending balance		5,694	[34],[38],[39]	6,188
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[32],[36],[37]	2,838
Gross Additions		0
Gross Reductions		0
Ending balance	[34],[38],[39]	2,838
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	[14],[28]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[11],[29]	$ 0
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[29]	14.00%	14.00%	[14],[28]
PIK Rate		14.00%	[11],[29]	14.00%	14.00%	[14],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(50)		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		150	[14],[28]	220
Gross Additions		0		0
Gross Reductions		50		2
Ending balance		$ 100	[11],[29]	218
Investment, Identifier [Axis]: Urgent DSO LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[19]	9.00%
PIK Rate	[19]	9.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		45
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		4,045
Gross Reductions		0
Ending balance	[19]	$ 4,045
Investment, Identifier [Axis]: Urgent DSO LLC, Secured Debt
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		326
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		8,713
Gross Reductions		0
Ending balance		$ 8,713
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.99%	[11],[13]		12.99%	[14],[15]
Spread		7.50%	[11],[13]		7.50%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 4,000
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	[14],[18]	2,570
Ending balance	[11],[19]	2,570
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)		0		100
Amount of Interest, Fees or Dividends Credited to Income		100		38
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,240	[18],[28]	11,940
Gross Additions		0		100
Gross Reductions		0		0
Ending balance		$ 12,240	[19],[29]	$ 12,040
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.48%
Spread		6.00%	[12],[13]	6.00%	6.00%	[15],[16],[26]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		4		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[15],[16],[26]	(21)
Gross Additions		0		6
Gross Reductions		0		0
Ending balance		$ 0	[12],[13]	$ (15)
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		11.50%	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		834		889
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		28,035		30,161
Gross Additions		14		15
Gross Reductions		0		0
Ending balance		$ 28,049		30,176
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.25%	[8],[12],[13]		5.25%	[7],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[16]	$ (408)
Ending balance	[8],[12],[13]	$ (352)
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.57%	[8],[13]		11.64%	[7],[15]
Spread		6.00%	[8],[13]		6.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 15,775
Ending balance	[8],[13]	17,423
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		0		168
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		3,000
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	2,180
Ending balance	[11]	$ 2,270
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.44%	[11],[13]		12.63%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 41,455
Ending balance	[11],[13]	41,572
Investment, Identifier [Axis]: Volusion, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		0		(2,576)
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		2,576
Gross Reductions		0		2,576
Ending balance		0		0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 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		7,250		0
Gross Additions				0
Gross Reductions				0
Ending balance		7,250		0
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		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 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				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions				11,446
Gross Reductions				0
Ending balance		0		11,446
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)		1,015
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,250
Gross Additions		1,015
Gross Reductions		1,015
Ending balance		7,250
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3
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
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		53
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,100
Gross Additions		0
Gross Reductions		0
Ending balance		2,100
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				0
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
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 2
Schedule of Investments [Line Items]
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
Investment, Identifier [Axis]: Volusion, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				(409)
Amount of Unrealized Gain/(Loss)				409
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				409
Gross Reductions				409
Ending balance				0
Investment, Identifier [Axis]: Volusion, LLC, Warrants
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				0
Gross Reductions				0
Ending balance				0
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	731
Ending balance	[11]	$ 830
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[13]		7.00%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ (4)
Ending balance	[11],[12],[13]	$ (4)
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.48%	[11],[13]		12.54%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 3,723
Ending balance	[11],[13]	$ 3,668
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.46%	[11],[13],[41]		11.50%	[14],[15],[55]
Spread		6.00%	[11],[13],[41]		6.00%	[14],[15],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[55]	$ 1,853
Ending balance	[11],[13],[41]	$ 2,223
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.46%	[11],[13]		11.50%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 386
Ending balance	[11],[13]	$ 385
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.46%	[11],[13]		11.50%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 15,886
Ending balance	[11],[13]	$ 15,846
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.46%	[11],[13]		11.50%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 12,707
Ending balance	[11],[13]	12,674
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14]	2,990
Ending balance	[11],[19]	$ 3,600
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.31%	[11],[13],[17]		11.34%	[14],[15],[65]
Spread		6.00%	[11],[13],[17]		6.00%	[14],[15],[65]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[65]	$ 2,405
Ending balance	[11],[13],[17]	$ 2,399
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.31%	[11],[13]		11.35%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 10,658
Ending balance	[11],[13]	$ 10,631
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.31%	[11],[13]		11.35%	[14],[15]
Spread		6.00%	[11],[13]		6.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 5,303
Ending balance	[11],[13]	$ 5,290
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.58%	[11],[13],[41]		12.64%	[14],[15],[66]
Spread		8.00%	[11],[13],[41]		7.00%	[14],[15],[66]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[66]	$ 2,222
Ending balance	[11],[13],[41]	$ 1,745
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.59%	[11],[13]		12.66%	[14],[15]
Spread		8.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 2,067
Ending balance	[11],[13]	$ 2,028
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.59%	[11],[13]		12.66%	[14],[15]
Spread		7.00%	[11],[13]		7.00%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 9,300
Ending balance	[11],[13]	$ 9,127
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[13]	12.58%
Spread	[11],[13]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[13]	$ 6,543
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		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,845	[18]	3,845
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 3,845	[19]	$ 3,845
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		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		374		471
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,028		14,140
Gross Additions		6		7
Gross Reductions		0		0
Ending balance		$ 12,034		14,147
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[13]	11.18%
Spread		5.75%	[11],[13]		5.25%	[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]	$ 0
Ending balance	[11],[13]	$ 23,996
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.15%	[11],[13]		11.22%	[14],[15]
Spread		5.75%	[11],[13]		5.75%	[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 24,057
Ending balance	[11],[13]	37,731
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[15]				11.25%
Spread	[14],[15]				5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15]	$ 37,828
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.93%	[8],[13]		13.00%	[7],[15]
Spread		7.50%	[8],[13]		7.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]	$ 10,220
Ending balance	[8],[13]	10,973
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)		0		(170)
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		240
Gross Additions		0		0
Gross Reductions		0		170
Ending balance		$ 0		$ 70
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		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		14		14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		450		450
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 450		$ 450
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		6.50%		6.50%	6.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		16		16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		945		945
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 945		$ 945
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(113)		(215)
Amount of Interest, Fees or Dividends Credited to Income		97		96
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,080		2,676
Gross Additions		0		0
Gross Reductions		113		215
Ending balance		1,967		2,461
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
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13]		12.71%	[14],[15],[67]
Spread		7.25%	[11],[13]		7.25%	[14],[15],[67]
PIK Rate	[11],[13]	1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[67]	$ 16,380
Ending balance	[11],[13]	$ 17,095
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[13],[17]		12.71%	[14],[15],[67]
Spread		7.25%	[11],[13],[17]		7.25%	[14],[15],[67]
PIK Rate	[11],[13],[17]	1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[67]	$ 4,067
Ending balance	[11],[13],[17]	$ 4,286
[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] (27)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 March 31, 2024. 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, 93% of the loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 5.25%, with a weighted-average floor of 1.21%. [14] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [15] 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 SOFR floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.20%. [16] 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 [17] 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 March 31, 2024. [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] (35)Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit. [24] (33)Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [25] Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [26] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [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] (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+8.09% (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 plus 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] Portfolio company headquarters are located outside of the United States. [36] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [37] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [38] (30)Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [39] Other Portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Other Portfolio investments. [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] 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 March 31, 2024. [42] 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. [43] Effective yield as of December 31, 2023 was approximately 4.98% on the Dreyfus Government Cash Management. [44] (36)Effective yield as of March 31, 2024 was approximately 4.94% on the Dreyfus Government Cash Management. [45] Effective yield as of December 31, 2023 was approximately 5.01% on the Fidelity Government Fund. [46] (37)Effective yield as of March 31, 2024 was approximately 4.97% 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+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. [49] (34)Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [50] Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [51] 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 [52] 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. [53] 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. [54] 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. [55] 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. [56] 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. [57] 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. [58] 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. [59] 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 [60] 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. [61] 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. [62] 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 12.45% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [63] 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. [64] Short-term portfolio investments. See Note C—Fair Value Hierarchy for Investments and Debentures—Portfolio Composition for a description of short-term portfolio investments. Short-term portfolio investments bear interest at index based floating interest rates which range from SOFR plus 2.75% to SOFR plus 4.00%, with SOFR floors which range from 0% to 0.75% (with a weighted average SOFR floor of approximately 0.39%) and resulting interest rates which range from 8.08% to 9.44% as of March 31, 2024, with a weighted-average interest rate of 8.68%. [65] 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. [66] 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. [67] 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.