Quarterly report pursuant to Section 13 or 15(d)

Consolidated Schedule of Investments

v3.23.3
Consolidated Schedule of Investments - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]        
Cost $ 3,799,385 [1] $ 3,773,752 [2]    
Fair value $ 4,294,722 [3] $ 4,102,177 [4]    
Investment owned, percent of net assets 181.20% 194.50%    
Analytical Systems Keco Holdings, LLC        
Schedule of Investments [Line Items]        
Cost $ 10,239 $ 10,485    
Fair value 8,876 8,046    
ASC Interests, LLC        
Schedule of Investments [Line Items]        
Cost 3,711 3,549    
Fair value 2,347 2,849    
ATS Workholding, LLC        
Schedule of Investments [Line Items]        
Cost 8,672 [5] 8,484 [6]    
Fair value 996 [5] 1,639 [6]    
Barfly Ventures, LLC        
Schedule of Investments [Line Items]        
Cost 2,295 [5] 2,295 [6]    
Fair value 3,751 [5] 4,031 [6]    
Batjer TopCo, LLC        
Schedule of Investments [Line Items]        
Cost 15,221 15,020    
Fair value 17,355 15,020    
Bolder Panther Group, LLC        
Schedule of Investments [Line Items]        
Cost 110,703 112,576    
Fair value 128,336 130,614    
Brewer Crane Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 9,902 10,244    
Fair value 11,125 13,044    
Bridge Capital Solutions Corporation        
Schedule of Investments [Line Items]        
Cost 12,945 12,945    
Fair value 15,263 15,153    
California Splendor Holdings LLC        
Schedule of Investments [Line Items]        
Cost 43,184 42,720    
Fair value 53,354 57,489    
Centre Technologies Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 23,626 21,076    
Fair value 27,974 23,654    
Chamberlin Holding LLC        
Schedule of Investments [Line Items]        
Cost 29,475 30,148    
Fair value 45,307 42,575    
Charps, LLC        
Schedule of Investments [Line Items]        
Cost 6,633 6,606    
Fair value 19,704 19,034    
Clad-Rex Steel, LLC        
Schedule of Investments [Line Items]        
Cost 17,592 18,969    
Fair value 16,374 20,309    
Cody Pools, Inc.        
Schedule of Investments [Line Items]        
Cost 51,828 50,281    
Fair value 112,706 100,443    
Colonial Electric Company LLC        
Schedule of Investments [Line Items]        
Cost 30,888 30,831    
Fair value 31,827 32,311    
CompareNetworks Topco, LLC        
Schedule of Investments [Line Items]        
Cost 5,842 7,207    
Fair value 19,299 25,071    
Cybermedia Technologies, LLC        
Schedule of Investments [Line Items]        
Cost 43,734      
Fair value 43,734      
Datacom, LLC        
Schedule of Investments [Line Items]        
Cost 11,249 11,023    
Fair value 8,393 10,682    
Digital Products Holdings LLC        
Schedule of Investments [Line Items]        
Cost 24,246 25,024    
Fair value 24,513 25,358    
Direct Marketing Solutions, Inc.        
Schedule of Investments [Line Items]        
Cost 35,464 35,434    
Fair value 48,598 49,487    
Elgin AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 32,162 34,040    
Fair value 32,638 34,040    
Gamber-Johnson Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 73,876 81,377    
Fair value 138,088 114,968    
Garreco, LLC        
Schedule of Investments [Line Items]        
Cost 4,288 5,026    
Fair value 4,668 5,626    
GRT Rubber Technologies LLC        
Schedule of Investments [Line Items]        
Cost 55,110 54,048    
Fair value 86,635 85,603    
Gulf Publishing Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 11,681 11,681    
Fair value 5,084 6,064    
Harris Preston Fund Investments        
Schedule of Investments [Line Items]        
Cost 3,593 [7],[8] 4,143 [9],[10]    
Fair value 6,211 [7],[8] 7,800 [9],[10]    
IG Investor, LLC        
Schedule of Investments [Line Items]        
Cost 51,715      
Fair value 51,715      
Jensen Jewelers of Idaho, LLC        
Schedule of Investments [Line Items]        
Cost 2,811 3,255    
Fair value 14,420 17,420    
Johnson Downie Opco, LLC        
Schedule of Investments [Line Items]        
Cost 12,437 13,056    
Fair value 17,017 15,539    
JorVet Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 36,211 36,173    
Fair value 36,211 36,173    
KBK Industries, LLC        
Schedule of Investments [Line Items]        
Cost 5,839      
Fair value 23,470      
Kickhaefer Manufacturing Company, LLC        
Schedule of Investments [Line Items]        
Cost 36,818 37,448    
Fair value 35,276 34,286    
Metalforming Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 31,275 31,123    
Fair value 31,375 31,123    
MH Corbin Holding LLC        
Schedule of Investments [Line Items]        
Cost 15,880 16,556    
Fair value 5,432 4,548    
MS Private Loan Fund I, LP        
Schedule of Investments [Line Items]        
Cost 14,250 [7],[8] 14,250 [9],[10]    
Fair value 14,527 [7],[8] 14,833 [9],[10]    
MS Private Loan Fund II, LP        
Schedule of Investments [Line Items]        
Cost [7],[8] 12,000      
Fair value [7],[8] 12,000      
Mystic Logistics Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 8,466 8,466    
Fair value 32,896 28,576    
Nebraska Vet AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 43,096 37,393    
Fair value 50,724 38,294    
NexRev LLC        
Schedule of Investments [Line Items]        
Cost 17,951 19,548    
Fair value 16,088 9,587    
NRP Jones, LLC        
Schedule of Investments [Line Items]        
Cost 5,797 5,797    
Fair value 4,520 6,870    
NuStep, LLC        
Schedule of Investments [Line Items]        
Cost 34,284 35,075    
Fair value 36,412 36,003    
OMi Topco, LLC        
Schedule of Investments [Line Items]        
Cost 14,501 16,714    
Fair value 46,130 38,560    
Orttech Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 32,073 33,429    
Fair value 39,250 35,179    
Pearl Meyer Topco LLC        
Schedule of Investments [Line Items]        
Cost 61,537 41,537    
Fair value 92,771 71,941    
PPL RVs, Inc.        
Schedule of Investments [Line Items]        
Cost 22,474 23,787    
Fair value 38,235 40,843    
Principle Environmental, LLC        
Schedule of Investments [Line Items]        
Cost 12,732 12,715    
Fair value 16,963 18,816    
Robbins Bros. Jewelry, Inc.        
Schedule of Investments [Line Items]        
Cost 45,380 46,439    
Fair value 36,490 50,249    
Tedder Industries, LLC        
Schedule of Investments [Line Items]        
Cost 27,190 26,277    
Fair value 21,910 24,641    
Televerde, LLC        
Schedule of Investments [Line Items]        
Cost 2,008 2,008    
Fair value 6,893 7,202    
Trantech Radiator Topco, LLC        
Schedule of Investments [Line Items]        
Cost 12,559 12,544    
Fair value 21,320 15,720    
Volusion, LLC        
Schedule of Investments [Line Items]        
Cost 29,422 33,719    
Fair value 11,450 14,914    
VVS Holdco LLC        
Schedule of Investments [Line Items]        
Cost 39,857 41,977    
Fair value 39,857 42,080    
Ziegler’s NYPD, LLC        
Schedule of Investments [Line Items]        
Cost 7,634 7,634    
Fair value 3,767 4,311    
AAC Holdings, Inc.        
Schedule of Investments [Line Items]        
Cost 16,875 [11] 14,738 [12]    
Fair value 12,997 [11] 11,550 [12]    
BBB Tank Services, LLC        
Schedule of Investments [Line Items]        
Cost 5,562 5,762    
Fair value 2,802 2,886    
Boccella Precast Products LLC        
Schedule of Investments [Line Items]        
Cost 2,576 2,576    
Fair value 2,450 3,290    
Buca C, LLC        
Schedule of Investments [Line Items]        
Cost 21,750 22,125    
Fair value 12,254 12,337    
Career Team Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 24,510 24,581    
Fair value 24,510 24,581    
Classic H&G Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 29,534 29,502    
Fair value 39,834 48,471    
DMA Industries, LLC        
Schedule of Investments [Line Items]        
Cost 25,811 26,979    
Fair value 27,260 28,460    
Dos Rios Partners        
Schedule of Investments [Line Items]        
Cost 8,318 [7],[8] 8,510 [9],[10]    
Fair value 11,273 [7],[8] 12,025 [9],[10]    
Freeport Financial Funds        
Schedule of Investments [Line Items]        
Cost 8,835 [7],[8] 9,810 [9],[10]    
Fair value 8,370 [7],[8] 9,331 [9],[10]    
GFG Group, LLC        
Schedule of Investments [Line Items]        
Cost 15,391 16,169    
Fair value 20,925 18,485    
Harris Preston Fund Investments        
Schedule of Investments [Line Items]        
Cost 6,996 [7],[8] 6,290 [9],[10]    
Fair value 9,052 [7],[8] 8,063 [9],[10]    
Hawk Ridge Systems, LLC        
Schedule of Investments [Line Items]        
Cost 49,928 43,868    
Fair value 65,435 59,365    
Houston Plating and Coatings, LLC        
Schedule of Investments [Line Items]        
Cost 5,352 5,352    
Fair value 6,520 5,400    
Infinity X1 Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 21,618      
Fair value 21,618      
Integral Energy Services        
Schedule of Investments [Line Items]        
Cost [5] 16,932      
Fair value [5] 15,359      
Iron-Main Investments, LLC        
Schedule of Investments [Line Items]        
Cost 49,250 37,931    
Fair value 49,324 37,931    
ITA Holdings Group, LLC        
Schedule of Investments [Line Items]        
Cost 8,753      
Fair value 8,753      
OnAsset Intelligence, Inc.        
Schedule of Investments [Line Items]        
Cost 12,683 12,683    
Fair value 3,581 5,309    
Oneliance, LLC        
Schedule of Investments [Line Items]        
Cost 6,616 6,615    
Fair value $ 6,555 6,615    
SI East, LLC        
Schedule of Investments [Line Items]        
Total Rate 11.25%      
Cost $ 57,664 90,926    
Fair value 73,951 103,436    
Slick Innovations, LLC        
Schedule of Investments [Line Items]        
Cost 12,510 14,154    
Fair value 14,150 15,370    
Student Resource Center, LLC        
Schedule of Investments [Line Items]        
Cost 4,883 [5] 4,556 [6]    
Fair value 4,890 [5] 4,556 [6]    
Superior Rigging & Erecting Co.        
Schedule of Investments [Line Items]        
Cost 24,916 25,878    
Fair value 26,356 25,878    
The Affiliati Network, LLC        
Schedule of Investments [Line Items]        
Cost 14,429 15,948    
Fair value 14,300 15,948    
UniTek Global Services, Inc.        
Schedule of Investments [Line Items]        
Cost 18,720 [11] 20,535 [12]    
Fair value 12,837 [11] 11,510 [12]    
Universal Wellhead Services Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 5,032 [5] 5,032 [6]    
Fair value 220 [5] 220 [6]    
World Micro Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 17,135 17,985    
Fair value 17,135 17,985    
AB Centers Acquisition Corporation        
Schedule of Investments [Line Items]        
Cost 21,184 [5] 17,216 [6]    
Fair value 21,862 [5] 17,754 [6]    
Acousti Engineering Company of Florida        
Schedule of Investments [Line Items]        
Cost 11,868 [5] 12,294 [6]    
Fair value 11,927 [5] 12,376 [6]    
Acumera, Inc.        
Schedule of Investments [Line Items]        
Cost 24,822 [5] 18,561 [6]    
Fair value 25,218 [5] 18,986 [6]    
Adams Publishing Group, LLC        
Schedule of Investments [Line Items]        
Cost 28,861 [5] 28,762 [6]    
Fair value 28,566 [5] 28,815 [6]    
AMEREQUIP LLC.        
Schedule of Investments [Line Items]        
Cost 33,359 [5] 38,461 [6]    
Fair value 33,931 [5] 39,105 [6]    
American Health Staffing Group, Inc.        
Schedule of Investments [Line Items]        
Cost 6,517 [5] 6,555 [6]    
Fair value 6,559 [5] 6,607 [6]    
American Nuts, LLC        
Schedule of Investments [Line Items]        
Cost 29,682 [5] 30,816 [6]    
Fair value 20,645 [5] 29,260 [6]    
American Teleconferencing Services, Ltd.        
Schedule of Investments [Line Items]        
Cost 16,686 [11] 16,686 [12]    
Fair value 781 [11] 976 [12]    
ArborWorks, LLC        
Schedule of Investments [Line Items]        
Cost 36,461 [5] 34,064 [6]    
Fair value 20,510 [5] 29,010 [6]    
Archer Systems, LLC        
Schedule of Investments [Line Items]        
Cost 45,908 [5] 67,583 [6]    
Fair value 47,291 [5] 67,764 [6]    
ATS Operating, LLC        
Schedule of Investments [Line Items]        
Cost 14,760 [5] 14,040 [6]    
Fair value 14,610 [5] 13,835 [6]    
AVEX Aviation Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 26,137 [5] 28,230 [6]    
Fair value 26,218 [5] 28,276 [6]    
Berry Aviation, Inc.        
Schedule of Investments [Line Items]        
Cost 0 [5] 1,356 [6]    
Fair value 3,040 [5] 5,026 [6]    
Bettercloud, Inc.        
Schedule of Investments [Line Items]        
Cost 28,454 [5] 26,944 [6]    
Fair value 27,672 [5] 27,429 [6]    
Bluestem Brands, Inc.        
Schedule of Investments [Line Items]        
Cost 6,363 [11] 3,317 [12]    
Fair value 7,055 [11] 9,094 [12]    
Bond Brand Loyalty ULC        
Schedule of Investments [Line Items]        
Cost [5],[8],[13] 13,151      
Fair value [5],[8],[13] 13,258      
Brainworks Software, LLC        
Schedule of Investments [Line Items]        
Cost 7,817 [5],[14],[15],[16] 7,817 [6]    
Fair value 1,836 [5],[14],[15],[16] 3,677 [6]    
Brightwood Capital Fund Investments        
Schedule of Investments [Line Items]        
Cost 12,877 [7],[8] 13,412 [9],[10]    
Fair value 11,273 [7],[8] 11,497 [9],[10]    
Burning Glass Intermediate Holding Company, Inc.        
Schedule of Investments [Line Items]        
Cost 19,936 [5] 19,628 [6]    
Fair value 20,197 [5] 19,933 [6]    
Cadence Aerospace LLC        
Schedule of Investments [Line Items]        
Cost [5] 9,246      
Fair value [5] 9,256      
CAI Software LLC        
Schedule of Investments [Line Items]        
Cost 1,789 1,789    
Fair value 1,789 1,789    
CaseWorthy, Inc.        
Schedule of Investments [Line Items]        
Cost 14,234 [5] 14,228 [6]    
Fair value 14,343 [5] 14,282 [6]    
Channel Partners Intermediateco, LLC        
Schedule of Investments [Line Items]        
Cost 45,853 [5] 40,163 [6]    
Fair value 45,169 [5] 40,325 [6]    
Computer Data Source, LLC        
Schedule of Investments [Line Items]        
Cost 23,111 [5] 23,243 [6]    
Fair value 22,464 [5] 21,799 [6]    
Dalton US Inc.        
Schedule of Investments [Line Items]        
Cost 18,797 [5] 15,123 [6]    
Fair value 19,264 [5] 15,390 [6]    
DTE Enterprises, LLC        
Schedule of Investments [Line Items]        
Cost 2,028 [5] 8,001 [6]    
Fair value 1,512 [5] 7,474 [6]    
Dynamic Communities, LLC        
Schedule of Investments [Line Items]        
Cost 3,773 [5] 3,487 [6]    
Fair value 3,537 [5] 3,487 [6]    
Eastern Wholesale Fence LLC        
Schedule of Investments [Line Items]        
Cost 27,848 [5] 31,406 [6]    
Fair value 26,698 [5] 31,159 [6]    
EnCap Energy Fund Investments        
Schedule of Investments [Line Items]        
Cost 25,589 [7],[8] 28,866 [9],[10]    
Fair value 15,861 [7],[8] 21,905 [9],[10]    
Engineering Research & Consulting, LLC        
Schedule of Investments [Line Items]        
Cost 15,888 [5] 16,132 [6]    
Fair value 16,175 [5] 16,469 [6]    
Escalent, Inc.        
Schedule of Investments [Line Items]        
Cost [5] 26,332      
Fair value [5] 26,795      
Event Holdco, LLC        
Schedule of Investments [Line Items]        
Cost 47,689 [5] 47,618 [6]    
Fair value 48,000 [5] 45,590 [6]    
Flip Electronics LLC        
Schedule of Investments [Line Items]        
Cost 11,895 [5] 11,588 [6]    
Fair value 12,076 [5] 11,831 [6]    
Fuse, LLC        
Schedule of Investments [Line Items]        
Cost 2,066 [11] 2,066 [12]    
Fair value 1,374 [11] 1,512 [12]    
GS HVAM Intermediate, LLC        
Schedule of Investments [Line Items]        
Cost 13,523 [5] 12,864 [6]    
Fair value 13,550 [5] 12,876 [6]    
GULF PACIFIC ACQUISITION, LLC        
Schedule of Investments [Line Items]        
Cost 3,833 [5] 3,809 [6]    
Fair value 3,925 [5] 3,898 [6]    
HDC/HW Intermediate Holdings        
Schedule of Investments [Line Items]        
Cost 3,970 [5] 3,581 [6]    
Fair value 3,649 [5] 3,497 [6]    
HEADLANDS OP-CO LLC        
Schedule of Investments [Line Items]        
Cost 16,305 [5] 16,359 [6]    
Fair value 16,560 [5] 16,667 [6]    
IG Parent Corporation        
Schedule of Investments [Line Items]        
Cost 14,199 [11],[14],[17] 14,974 [12]    
Fair value 14,389 [11],[14],[17] 15,197 [12]    
Imaging Business Machines, L.L.C.        
Schedule of Investments [Line Items]        
Cost [5] 23,294      
Fair value [5] 23,734      
Industrial Services Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost 20,983 [5] 20,507 [6]    
Fair value 20,978 [5] 20,540 [6]    
Infolinks Media Buyco, LLC        
Schedule of Investments [Line Items]        
Cost 9,903 [5] 8,442 [6]    
Fair value 10,036 [5] 8,574 [6]    
Insight Borrower Corporation        
Schedule of Investments [Line Items]        
Cost [5] 14,516      
Fair value [5] 14,516      
Inspire Aesthetics Management, LLC        
Schedule of Investments [Line Items]        
Cost [5] 11,055      
Fair value [5] 11,202      
Interface Security Systems, L.L.C        
Schedule of Investments [Line Items]        
Cost 9,072 [5] 8,919 [6]    
Fair value 2,316 [5] 2,764 [6]    
Invincible Boat Company, LLC.        
Schedule of Investments [Line Items]        
Cost 17,122 [5] 17,402 [6]    
Fair value 16,675 [5] 17,511 [6]    
Isagenix International, LLC        
Schedule of Investments [Line Items]        
Cost [11] 2,305      
Fair value [11] 2,304      
Jackmont Hospitality, Inc.        
Schedule of Investments [Line Items]        
Cost 2,940 [5] 2,685 [6]    
Fair value 3,342 [5] 3,202 [6]    
Joerns Healthcare, LLC        
Schedule of Investments [Line Items]        
Cost 10,857 [11] 10,723 [12]    
Fair value 2,257 [11] 2,801 [12]    
JTI Electrical & Mechanical, LLC        
Schedule of Investments [Line Items]        
Cost 39,022 [5] 37,907 [6]    
Fair value 40,151 [5] 39,652 [6]    
KMS, LLC        
Schedule of Investments [Line Items]        
Cost 8,377 [5] 8,410 [6]    
Fair value 7,736 [5] 8,017 [6]    
LL Management, Inc.        
Schedule of Investments [Line Items]        
Cost 27,649 [5] 27,980 [6]    
Fair value 27,759 [5] 27,926 [6]    
Mako Steel, LP        
Schedule of Investments [Line Items]        
Cost 15,694 [5] 18,185 [6]    
Fair value 15,877 [5] 18,307 [6]    
MB2 Dental Solutions, LLC        
Schedule of Investments [Line Items]        
Cost 17,895 [11] 16,051 [12]    
Fair value 18,044 [11] 16,214 [12]    
Microbe Formulas, LLC        
Schedule of Investments [Line Items]        
Cost 23,008 [5] 25,556 [6]    
Fair value 23,359 [5] 25,118 [6]    
MonitorUS Holding, LLC        
Schedule of Investments [Line Items]        
Cost 31,295 [5],[8],[13] 27,494 [6],[10],[18]    
Fair value 31,780 [5],[8],[13] 28,577 [6],[10],[18]    
NinjaTrader, LLC        
Schedule of Investments [Line Items]        
Cost 20,295 [5] 21,379    
Fair value 20,443 [5] 21,628    
NWN Corporation        
Schedule of Investments [Line Items]        
Cost 46,028 [5] 49,085 [6]    
Fair value 46,870 [5] 47,530 [6]    
Paragon Healthcare, Inc.        
Schedule of Investments [Line Items]        
Cost 21,347 [5] 20,898 [6]    
Fair value 21,866 [5] 21,118 [6]    
Power System Solutions        
Schedule of Investments [Line Items]        
Cost [5] 19,010      
Fair value [5] 19,340      
Project Eagle Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 28,793 [5] 29,022 [6]    
Fair value 29,130 [5] 29,401 [6]    
PTL US Bidco, Inc        
Schedule of Investments [Line Items]        
Cost 30,596 [5],[8] 27,575 [6],[10]    
Fair value 30,628 [5],[8] 27,737 [6],[10]    
RA Outdoors LLC        
Schedule of Investments [Line Items]        
Cost 13,766 [5] 13,230    
Fair value 12,828 [5] 12,083    
Richardson Sales Solutions        
Schedule of Investments [Line Items]        
Cost [5] 61,042      
Fair value [5] 61,042      
RM Bidder, LLC        
Schedule of Investments [Line Items]        
Cost 471 [5] 471 [6]    
Fair value 14 [5] 19 [6]    
Roof Opco, LLC        
Schedule of Investments [Line Items]        
Cost 6,639 [5] 5,716 [6]    
Fair value 6,752 [5] 5,817 [6]    
RTIC Subsidiary Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 16,661 [5] 17,849 [6]    
Fair value 15,685 [5] 16,625 [6]    
Rug Doctor, LLC.        
Schedule of Investments [Line Items]        
Cost 13,933 [5] 13,813 [6]    
Fair value 13,737 [5] 12,515 [6]    
SIB Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 9,917 [5] 9,761 [6]    
Fair value 8,946 [5] 9,123 [6]    
South Coast Terminals Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 35,347 [5] 41,396 [6]    
Fair value 35,995 [5] 42,500 [6]    
SPAU Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 18,612 [5] 16,223 [6]    
Fair value 18,758 [5] 16,510 [6]    
U.S. TelePacific Corp.        
Schedule of Investments [Line Items]        
Cost [11] 3,765      
Fair value [11] 3,678      
USA DeBusk LLC        
Schedule of Investments [Line Items]        
Cost [5] 45,596      
Fair value [5] 46,269      
Veregy Consolidated, Inc.        
Schedule of Investments [Line Items]        
Cost 16,756 [11] 16,751 [12]    
Fair value 15,140 [11] 14,849 [12]    
Wall Street Prep, Inc.        
Schedule of Investments [Line Items]        
Cost 4,076 [5] 4,567 [6]    
Fair value 4,188 [5] 4,560 [6]    
Watterson Brands, LLC        
Schedule of Investments [Line Items]        
Cost 31,000 [5] 29,286 [6]    
Fair value 31,349 [5] 29,708 [6]    
West Star Aviation Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost 13,243 [5] 12,129 [6]    
Fair value 14,649 [5] 12,615 [6]    
Winter Services LLC        
Schedule of Investments [Line Items]        
Cost 11,187 [5] 9,797 [6]    
Fair value 11,367 [5] 9,975 [6]    
Xenon Arc, Inc.        
Schedule of Investments [Line Items]        
Cost 65,004 [5] 61,337 [6]    
Fair value 66,075 [5] 61,968 [6]    
Zips Car Wash, LLC        
Schedule of Investments [Line Items]        
Cost 21,515 [5] 21,639 [6]    
Fair value 20,259 [5] 21,891 [6]    
Market Force Information, LLC        
Schedule of Investments [Line Items]        
Cost   48,847    
Fair value   7,700    
ATX Networks Corp.        
Schedule of Investments [Line Items]        
Cost [12]   8,499    
Fair value [12]   12,211    
Flame King Holdings, LLC        
Schedule of Investments [Line Items]        
Cost   38,975    
Fair value   46,380    
Rocaceia, LLC (Quality Lease and Rental Holdings, LLC)        
Schedule of Investments [Line Items]        
Cost   32,365    
Fair value   0    
Sonic Systems International, LLC        
Schedule of Investments [Line Items]        
Cost [6]   16,883    
Fair value [6]   17,049    
Independent Pet Partners Intermediate Holdings, LLC        
Schedule of Investments [Line Items]        
Cost [6]   30,253    
Fair value [6]   15,429    
Money Market Funds        
Schedule of Investments [Line Items]        
Cost [1],[19] 37,404      
Fair value [3],[19] 37,404      
Control investments        
Schedule of Investments [Line Items]        
Cost 1,390,675 [1],[20] 1,270,802 [2],[21]    
Fair value $ 1,927,019 [3],[20] $ 1,703,172 [4],[21] $ 1,599,429 $ 1,489,257
Investment owned, percent of net assets 81.30% 80.80%    
Affiliate investments        
Schedule of Investments [Line Items]        
Cost $ 537,455 [1],[22] $ 635,536 [2],[23]    
Fair value $ 565,942 [3],[22] $ 618,359 [4],[23] 552,581 549,214
Investment owned, percent of net assets 23.90% 29.30%    
Non‑Control/Non‑Affiliate investments        
Schedule of Investments [Line Items]        
Cost $ 1,871,255 [1],[24] $ 1,867,414 [2],[25]    
Fair value $ 1,801,761 [3],[24] $ 1,780,646 [4],[25]    
Investment owned, percent of net assets 76.00% 84.40%    
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 HPP-MS, L.P.)        
Schedule of Investments [Line Items]        
Fair value $ 315 $ 248 244 0
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)        
Schedule of Investments [Line Items]        
Fair value 5,896 7,552 7,142 3,971
Investment, Identifier [Axis]: 423 HAR, LP, LP Interests (423 HAR, L.P.)        
Schedule of Investments [Line Items]        
Fair value $ 750 $ 0    
Investment, Identifier [Axis]: AAC Holdings, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 593,928 [11] 593,928 [12]    
Cost $ 3,148 [11] $ 3,148 [12]    
Fair value $ 0 [11] $ 0 [12] $ 75 2,079
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   18.00% [12] 18.00%  
PIK Rate   18.00% [12] 18.00%  
Principal [12]   $ 11,726    
Cost [12]   11,590    
Fair value   11,550 [12] $ 10,976 9,794
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [11] 18.00%      
PIK Rate [11] 18.00%      
Principal [11] $ 404      
Cost [11] 399      
Fair value $ 379 [11] 0    
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [11] 18.00%      
PIK Rate [11] 18.00%      
Principal [11] $ 13,425      
Cost [11] 13,328      
Fair value $ 12,618 [11] $ 11,550    
Investment, Identifier [Axis]: AAC Holdings, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 554,353 [11],[26] 554,353 [12],[27]    
Cost $ 0 [11],[26] $ 0 [12],[27]    
Fair value $ 0 [11],[26] $ 0 [12],[27] 75 1,940
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14] 13.50%      
Reference Rate and Spread 5.00% [5],[14] 6.00% [6],[28],[29],[30]    
Principal $ 647 [5],[14] $ 0 [6],[28],[29],[30]    
Cost 582 [5],[14] (39) [6],[28],[29],[30]    
Fair value $ 647 [5],[14] $ (39) [6],[28],[29],[30]    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29]   10.20%    
Reference Rate and Spread 6.00% [5],[14],[17],[31] 6.00% [6],[28],[29]    
Principal $ 0 [5],[14],[17],[31] $ 741 [6],[28],[29]    
Cost (28) [5],[14],[17],[31] 653 [6],[28],[29]    
Fair value $ (28) [5],[14],[17],[31] $ 741 [6],[28],[29]    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.42% [5],[14],[17] 10.58% [6],[28],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.00% [6],[28],[29]    
Principal $ 19,864 [5],[14],[17] $ 17,052 [6],[28],[29]    
Cost 19,322 [5],[14],[17] 16,602 [6],[28],[29]    
Fair value $ 19,864 [5],[14],[17] $ 17,052 [6],[28],[29]    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.42%      
Reference Rate and Spread [5],[14],[17] 6.00%      
Principal [5],[14],[17] $ 1,379      
Cost [5],[14],[17] 1,308      
Fair value [5],[14],[17] $ 1,379      
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.18% [11],[14],[17] 10.14% [12],[29]    
Reference Rate and Spread 5.75% [11],[14],[17] 5.75% [12],[29]    
Principal $ 17,529 [11],[14],[17] $ 21,077 [12],[29]    
Cost 17,341 [11],[14],[17] 20,781 [12],[29]    
Fair value 17,244 [11],[14],[17] $ 18,969 [12],[29]    
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32]   186    
Cost [32]   $ 1,200    
Fair value $ 0 $ 9,400 [32]    
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Fair value     0 144
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Fair value     8,780 7,740
Investment, Identifier [Axis]: AMEREQUIP LLC., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 235 [5],[33] 235 [6]    
Cost $ 1,844 [5],[33] $ 1,779 [6]    
Fair value $ 1,930 [5],[33] $ 1,779 [6]    
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 7.40% [5],[14],[17],[31] 7.40% [6],[28],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[28],[29],[30]    
Cost (115) [5],[14],[17],[31] (137) [6],[28],[29],[30]    
Fair value $ (115) [5],[14],[17],[31] $ (137) [6],[28],[29],[30]    
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.87% [5],[14],[17] 11.72% [6],[28],[29]    
Reference Rate and Spread 7.40% [5],[14],[17] 7.40% [6],[28],[29]    
Principal $ 32,116 [5],[14],[17] $ 37,491 [6],[28],[29]    
Cost 31,630 [5],[14],[17] 36,819 [6],[28],[29]    
Fair value $ 32,116 [5],[14],[17] $ 37,463 [6],[28],[29]    
Investment, Identifier [Axis]: ASC Interests, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,500 1,500    
Cost $ 1,500 $ 1,500    
Fair value $ 100 800 $ 800 720
Investment, Identifier [Axis]: ASC Interests, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 162      
Cost $ 162      
Fair value $ 250 $ 0    
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00% 13.00%  
Principal $ 400 $ 400    
Cost 400 400    
Fair value $ 400 $ 400 $ 300 200
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00% 13.00%  
Principal $ 1,650 $ 1,650    
Cost 1,649 1,649    
Fair value $ 1,597 $ 1,649 $ 1,648 1,636
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 720,000 [5] 720,000 [6]    
Cost $ 720 [5] $ 720 [6]    
Fair value $ 570 [5] $ 660 [6]    
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.01%      
Reference Rate and Spread 6.50% [5],[14],[17] 5.50% [6],[28],[29],[30]    
Principal $ 720 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 720 [5],[14],[17] 0 [6],[28],[29],[30]    
Fair value $ 720 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.01% [5],[14],[17] 9.32% [6],[28],[29]    
Reference Rate and Spread 5.50% [5],[14],[17] 5.50% [6],[28],[29]    
Principal $ 6,660 [5],[14],[17] $ 6,660 [6],[28],[29]    
Cost 6,660 [5],[14],[17] 6,660 [6],[28],[29]    
Fair value $ 6,660 [5],[14],[17] $ 6,582 [6],[28],[29]    
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.01% [5],[14],[17] 11.32% [6],[28],[29]    
Reference Rate and Spread 7.50% [5],[14],[17] 7.50% [6],[28],[29]    
Principal $ 6,660 [5],[14],[17] $ 6,660 [6],[28],[29]    
Cost 6,660 [5],[14],[17] 6,660 [6],[28],[29]    
Fair value $ 6,660 [5],[14],[17] $ 6,593 [6],[28],[29]    
Investment, Identifier [Axis]: ATS Workholding, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3,725,862 [5] 3,725,862 [6]    
Cost $ 3,726 [5] $ 3,726 [6]    
Fair value $ 0 [5] $ 0 [6] $ 0 0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 5.00% [5],[16] 5.00% [6],[34] 5.00%  
Principal $ 2,090 [5],[16] $ 1,901 [6],[34]    
Cost 2,090 [5],[16] 1,901 [6],[34]    
Fair value $ 408 [5],[16] $ 634 [6],[34] $ 800 1,088
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 5.00% [5],[16] 5.00% [6],[34] 5.00%  
Principal $ 3,015 [5],[16] $ 3,015 [6],[34]    
Cost 2,856 [5],[16] 2,857 [6],[34]    
Fair value 588 [5],[16] $ 1,005 [6],[34] $ 1,298 1,917
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [12]   583    
Cost [12]   $ 0    
Fair value $ 0 $ 3,270 [12] $ 0 0
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   12.23% [12],[29] 11.14%  
Reference Rate and Spread 7.50% 7.50% [12],[29] 7.50%  
Principal [12],[29]   $ 6,783    
Cost [12],[29]   6,208    
Fair value $ 0 $ 6,343 [12],[29] $ 6,707 7,092
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt        
Schedule of Investments [Line Items]        
Total Rate   10.00% [12] 10.00%  
PIK Rate   10.00% [12] 10.00%  
Principal [12]   $ 3,396    
Cost [12]   2,291    
Fair value $ 0 $ 2,598 [12] $ 2,465 1,963
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 984 [5] 360 [6]    
Cost $ 965 [5] $ 360 [6]    
Fair value $ 892 [5] $ 406 [6]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.67%      
Reference Rate and Spread 7.25% [5],[14],[17] 7.25% [6],[28],[29],[30]    
Principal $ 1,474 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 1,346 [5],[14],[17] (57) [6],[28],[29],[30]    
Fair value $ 1,428 [5],[14],[17] $ (57) [6],[28],[29],[30]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.80% [5],[14],[17] 12.17% [6],[28],[29]    
Reference Rate and Spread 7.25% [5],[14],[17] 7.25% [6],[28],[29]    
Principal $ 24,663 [5],[14],[17] $ 29,071 [6],[28],[29]    
Cost 23,826 [5],[14],[17] 27,927 [6],[28],[29]    
Fair value $ 23,898 [5],[14],[17] $ 27,927 [6],[28],[29]    
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.94% [5],[14],[17] 13.23% [6],[29]    
Reference Rate and Spread 8.50% [5],[14],[17] 8.50% [6],[29]    
Principal $ 1,678 [5],[14],[17] $ 1,678 [6],[29]    
Cost 1,671 [5],[14],[17] 1,669 [6],[29]    
Fair value $ 1,678 [5],[14],[17] $ 1,678 [6],[29]    
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.94% [5],[14],[17] 13.23% [6],[29]    
Reference Rate and Spread 8.50% [5],[14],[17] 8.50% [6],[29]    
Principal $ 9,485 [5],[14],[17] $ 9,891 [6],[29]    
Cost 9,438 [5],[14],[17] 9,825 [6],[29]    
Fair value $ 9,485 [5],[14],[17] $ 9,891 [6],[29]    
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 17.94% [5],[14],[17] 16.17% [6],[29]    
Reference Rate and Spread 12.50% [5],[14],[17] 12.50% [6],[29]    
Principal $ 764 [5],[14],[17] $ 807 [6],[29]    
Cost 759 [5],[14],[17] 800 [6],[29]    
Fair value $ 764 [5],[14],[17] $ 807 [6],[29]    
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[29]   13.88%    
Reference Rate and Spread 7.50% [5],[14],[17],[31] 9.50% [6],[29]    
Principal $ 0 [5],[14],[17],[31] $ 14,618 [6],[29]    
Cost (2) [5],[14],[17],[31] 14,291 [6],[29]    
Fair value $ (2) [5],[14],[17],[31] $ 14,618 [6],[29]    
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.99% [5],[14],[17] 13.57% [6],[29]    
Reference Rate and Spread 7.50% [5],[14],[17] 9.00% [6],[29]    
Principal $ 25,110 [5],[14],[17] $ 4,368 [6],[29]    
Cost 24,824 [5],[14],[17] 4,270 [6],[29]    
Fair value $ 25,110 [5],[14],[17] $ 4,368 [6],[29]    
Investment, Identifier [Axis]: Acumera, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [5],[35] 17,525      
Cost [5],[35] $ 0      
Fair value [5],[35] $ 110      
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.00% [5],[14],[17],[36] 10.00% [6],[29],[37]    
Reference Rate and Spread 7.00% [5],[14],[17],[36] 6.00% [6],[29],[37]    
PIK Rate [5],[14],[17],[36] 1.00%      
Principal $ 7,112 [5],[14],[17],[36] $ 4,729 [6],[29],[37]    
Cost 7,112 [5],[14],[17],[36] 4,729 [6],[29],[37]    
Fair value $ 7,029 [5],[14],[17],[36] $ 4,729 [6],[29],[37]    
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [5],[14],[17],[36] 10.00% [6],[29],[37]    
Reference Rate and Spread 7.00% [5],[14],[17],[36] 7.50% [6],[29],[37]    
PIK Rate [5],[14],[17],[36] 1.00%      
Principal $ 21,792 [5],[14],[17],[36] $ 24,086 [6],[29],[37]    
Cost 21,749 [5],[14],[17],[36] 24,033 [6],[29],[37]    
Fair value $ 21,537 [5],[14],[17],[36] $ 24,086 [6],[29],[37]    
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.00% [5],[14],[31] 6.00% [6],[29],[30]    
Principal $ 0 [5],[14],[31] $ 0 [6],[29],[30]    
Cost (8) [5],[14],[31] (10) [6],[29],[30]    
Fair value $ (8) [5],[14],[31] $ (10) [6],[29],[30]    
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.43% [5],[14] 11.12% [6],[29]    
Reference Rate and Spread 6.00% [5],[14] 6.00% [6],[29]    
Principal $ 6,567 [5],[14] $ 6,617 [6],[29]    
Cost 6,525 [5],[14] 6,565 [6],[29]    
Fair value $ 6,567 [5],[14] $ 6,617 [6],[29]    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.15% [5],[14],[17] 10.46% [6],[28],[29]    
Reference Rate and Spread 8.75% [5],[14],[17] 6.75% [6],[28],[29]    
PIK Rate 1.00%      
Principal $ 5,720 [5],[14],[17] $ 15,628 [6],[28],[29]    
Cost 5,665 [5],[14],[17] 15,408 [6],[28],[29]    
Fair value $ 4,747 [5],[14],[17] $ 14,606 [6],[28],[29]    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.15% [5],[14],[17] 12.46% [6],[28],[29]    
Reference Rate and Spread 8.75% [5],[14],[17] 8.75% [6],[28],[29]    
PIK Rate [5],[14],[17] 1.00%      
Principal $ 9,307 [5],[14],[17] $ 15,628 [6],[28],[29]    
Cost 9,203 [5],[14],[17] 15,408 [6],[28],[29]    
Fair value $ 7,712 [5],[14],[17] $ 14,654 [6],[28],[29]    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[16],[17] 17.15%      
Reference Rate and Spread [5],[14],[16],[17] 10.75%      
PIK Rate [5],[14],[16],[17] 1.00%      
Principal [5],[14],[16],[17] $ 5,705      
Cost [5],[14],[16],[17] 5,645      
Fair value [5],[14],[16],[17] $ 3,116      
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[16],[17] 17.15%      
Reference Rate and Spread [5],[14],[16],[17] 10.75%      
PIK Rate [5],[14],[16],[17] 1.00%      
Principal [5],[14],[16],[17] $ 9,283      
Cost [5],[14],[16],[17] 9,169      
Fair value [5],[14],[16],[17] $ 5,070      
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 7.50% [11],[15],[16] 7.50% [12],[34]    
Reference Rate and Spread 6.50% [11],[15],[16] 6.50% [12],[34]    
Principal $ 2,980 [11],[15],[16] $ 2,980 [12],[34]    
Cost 2,980 [11],[15],[16] 2,980 [12],[34]    
Fair value $ 134 [11],[15],[16] $ 168 [12],[34]    
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 7.50% [11],[14],[15],[16] 7.50% [12],[29],[34]    
Reference Rate and Spread 6.50% [11],[14],[15],[16] 6.50% [12],[29],[34]    
Principal $ 14,370 [11],[14],[15],[16] $ 14,370 [12],[29],[34]    
Cost 13,706 [11],[14],[15],[16] 13,706 [12],[29],[34]    
Fair value 647 [11],[14],[15],[16] 808 [12],[29],[34]    
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]        
Fair value 0 14,914 0 32,597
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]        
Fair value $ 0 $ (14,914) $ 0 41,748
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 3,200 3,200    
Total Rate 14.13% 14.13% 12.63%  
Cost $ 3,200 $ 3,200    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 2,427 2,427    
Cost $ 2,427 $ 2,427    
Fair value $ 4,580 $ 3,504 $ 3,844 4,894
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[17] 15.38%      
Reference Rate and Spread 10.00% [14],[17] 10.00% [29],[30] 10.00%  
Principal $ 160 [14],[17] $ 0 [29],[30]    
Cost 159 [14],[17] (3) [29],[30]    
Fair value $ 159 [14],[17] $ (3) [29],[30] $ (3) (4)
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.38% [14],[17] 14.13% [29] 12.63%  
Reference Rate and Spread 10.00% [14],[17] 10.00% [29] 10.00%  
Principal $ 4,195 [14],[17] $ 4,665 [29]    
Cost 4,137 [14],[17] 4,545 [29]    
Fair value $ 4,137 [14],[17] $ 4,545 [29] $ 4,595 4,740
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 420 [26] 420 [27]    
Cost $ 316 [26] $ 316 [27]    
Fair value $ 0 [26] $ 0 [27] 0 0
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 234 [5] 234 [6]    
Cost $ 234 [5] $ 234 [6]    
Fair value $ 0 [5] $ 0 [6]    
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.43% [5],[14],[16],[17] 13.41% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[16],[17] 9.00% [6],[29]    
PIK Rate [5],[14],[16],[17] 3.00%      
Principal $ 6,986 [5],[14],[16],[17] $ 4,678 [6],[29]    
Cost 6,892 [5],[14],[16],[17] 4,569 [6],[29]    
Fair value $ 3,899 [5],[14],[16],[17] $ 3,945 [6],[29]    
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.43% [5],[14],[16],[17] 13.56% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[16],[17] 9.00% [6],[29]    
PIK Rate [5],[14],[16],[17] 3.00%      
Principal $ 29,762 [5],[14],[16],[17] $ 29,722 [6],[29]    
Cost 29,335 [5],[14],[16],[17] 29,261 [6],[29]    
Fair value $ 16,611 [5],[14],[16],[17] $ 25,065 [6],[29]    
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,387,832 [5] 1,387,832 [6]    
Cost $ 1,388 [5] $ 1,388 [6]    
Fair value $ 2,030 [5] $ 1,388 [6]    
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.00% [5],[14],[17],[31] 6.50% [6],[28],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[28],[29],[30]    
Cost (114) [5],[14],[17],[31] (135) [6],[28],[29],[30]    
Fair value $ (114) [5],[14],[17],[31] $ (135) [6],[28],[29],[30]    
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.54% [5],[14],[17] 10.92% [6],[28],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.50% [6],[28],[29]    
Principal $ 45,375 [5],[14],[17] $ 67,597 [6],[28],[29]    
Cost 44,634 [5],[14],[17] 66,330 [6],[28],[29]    
Fair value $ 45,375 [5],[14],[17] $ 66,511 [6],[28],[29]    
Investment, Identifier [Axis]: Arrow International, Inc, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29],[38]   10.36%    
Reference Rate and Spread [6],[28],[29],[38]   6.60%    
Principal [6],[28],[29],[38]   $ 36,000    
Cost [6],[28],[29],[38]   35,737    
Fair value [6],[28],[29],[38]   $ 36,000    
Investment, Identifier [Axis]: BBB Tank Services, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 800,000 800,000    
Cost $ 800 $ 800    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Preferred Stock (non-voting)        
Schedule of Investments [Line Items]        
Total Rate 15.00% 15.00% 15.00%  
PIK Rate 15.00%   15.00%  
Cost $ 162 $ 162    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 16.44% [14],[15] 15.12% [29],[39] 13.56%  
Reference Rate and Spread 11.00% [14],[15] 11.00% [29],[39] 11.00%  
Principal $ 600 [14],[15] $ 800 [29],[39]    
Cost 600 [14],[15] 800 [29],[39]    
Fair value $ 600 [14],[15] $ 800 [29],[39] $ 800 800
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 16.44% [14],[15] 15.12% [29],[39] 13.56%  
Reference Rate and Spread 11.00% [14],[15] 11.00% [29],[39] 11.00%  
Principal $ 4,000 [14],[15] $ 4,000 [29],[39]    
Cost 4,000 [14],[15] 4,000 [29],[39]    
Fair value $ 2,202 [14],[15] $ 2,086 [29],[39] $ 1,498 1,707
Investment, Identifier [Axis]: Barfly Ventures, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 37 [5] 37 [6]    
Cost $ 1,584 [5] $ 1,584 [6]    
Fair value $ 3,040 [5] $ 3,320 [6] $ 3,320 1,930
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 7.00% [5] 7.00% [6] 7.00%  
Principal $ 711 [5] $ 711 [6]    
Cost 711 [5] 711 [6]    
Fair value $ 711 [5] $ 711 [6] $ 711 710
Investment, Identifier [Axis]: Batjer TopCo, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 4,073 [33] 4,073 [32]    
Cost $ 4,095 [33] $ 4,095 [32]    
Fair value 6,150 [33] 4,095 [32] 4,095 0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [31] 0 [30]    
Cost (6) [31] (8) [30]    
Fair value $ 0 [31] (8) [30] $ (8) 0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00%   11.00%  
Principal $ 630 0 [30]    
Cost 630 0 [30]    
Fair value $ 630 $ 0 [30] $ 0 0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00% 11.00% 11.00%  
Principal $ 10,575 $ 11,025    
Cost 10,502 10,933    
Fair value $ 10,575 $ 10,933 $ 10,927 0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,548,387 [5],[33],[40] 1,548,387 [6],[32],[41]    
Total Rate [6],[32],[41]   8.00%    
PIK Rate [6],[32],[41]   8.00%    
Cost $ 0 [5],[33],[40] $ 1,161 [6],[32],[41]    
Fair value $ 2,820 [5],[33],[40] $ 4,561 [6],[32],[41]    
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 122,416 [5],[33],[40] 122,416 [6],[30],[32],[41]    
PIK Rate [6],[30],[32],[41]   16.00%    
Cost $ 0 [5],[33],[40] $ 0 [6],[30],[32],[41]    
Fair value $ 220 [5],[33],[40] $ 270 [6],[30],[32],[41]    
Investment, Identifier [Axis]: Berry Aviation, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6]   12.00%    
PIK Rate [6]   1.50%    
Principal [6]   $ 195    
Cost [6]   195    
Fair value [6]   $ 195    
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 7.25% [5],[14],[17],[31] 1.00% [6],[28],[29],[30]    
PIK Rate [6],[28],[29],[30]   6.00%    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[28],[29],[30]    
Cost (65) [5],[14],[17],[31] (76) [6],[28],[29],[30]    
Fair value $ (65) [5],[14],[17],[31] $ (76) [6],[28],[29],[30]    
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.67% [5],[14],[17] 11.40% [6],[28],[29]    
Reference Rate and Spread 7.25% [5],[14],[17] 1.00% [6],[28],[29]    
PIK Rate 6.25% [5],[14],[17] 6.00% [6],[28],[29]    
Principal $ 28,938 [5],[14],[17] $ 27,505 [6],[28],[29]    
Cost 28,519 [5],[14],[17] 27,020 [6],[28],[29]    
Fair value $ 27,737 [5],[14],[17] $ 27,505 [6],[28],[29]    
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,050,000 [5] 1,050,000 [6]    
Cost $ 1,050 [5] $ 1,050 [6]    
Fair value $ 20 [5] $ 420 [6]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 723,184 [11] 723,184 [12],[32]    
Cost $ 1 [11] $ 1 [12],[32]    
Fair value $ 1,140 [11] $ 4,860 [12],[32]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [11],[14] 16.00%      
Reference Rate and Spread 7.50% [11],[14] 8.50% [12],[29],[30]    
PIK Rate [11],[14] 15.00%      
Principal $ 2,458 [11],[14] $ 0 [12],[29],[30]    
Cost 2,458 [11],[14] 0 [12],[29],[30]    
Fair value $ 2,311 [11],[14] $ 0 [12],[29],[30]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.94% [11],[14],[17] 12.94% [12],[29]    
Reference Rate and Spread 8.50% [11],[14],[17] 8.50% [12],[29]    
PIK Rate [11],[14],[17] 12.94%      
Principal $ 3,557 [11],[14],[17] $ 3,239 [12],[29]    
Cost 2,868 [11],[14],[17] 2,280 [12],[29]    
Fair value $ 3,344 [11],[14],[17] $ 3,139 [12],[29]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 163,295 [11],[26] 163,295 [12],[27]    
Cost $ 1,036 [11],[26] $ 1,036 [12],[27]    
Fair value $ 260 [11],[26] $ 1,095 [12],[27]    
Investment, Identifier [Axis]: Boccella Precast Products LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,160,000 2,160,000 [32]    
Cost $ 2,256 $ 2,256 [32]    
Fair value $ 2,130 $ 2,970 [32] $ 3,320 4,830
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 320 $ 320    
Cost 320 320    
Fair value $ 320 $ 320 $ 320 320
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 140,000 [33] 140,000 [32]    
Total Rate 8.00% [33] 8.00% [32] 8.00%  
Cost $ 14,000 [33] $ 14,000 [32]    
Fair value $ 31,120 [33] $ 31,420 [32] $ 27,010 23,170
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.52% [14],[17],[42] 13.39% [28],[29],[43]    
Reference Rate and Spread 9.15% [14],[17],[42] 9.26% [28],[29],[43]    
Principal $ 97,216 [14],[17],[42] $ 99,194 [28],[29],[43]    
Cost 96,703 [14],[17],[42] 98,576 [28],[29],[43]    
Fair value 97,216 [14],[17],[42] 99,194 [28],[29],[43]    
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread     8.00%  
Fair value $ 0 0 $ 0 0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.52%   12.63%  
Reference Rate and Spread 9.15%   10.00%  
Fair value $ 97,216 $ 99,194 $ 99,194 39,000
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5],[8],[13] 571      
Cost [5],[8],[13] $ 571      
Fair value [5],[8],[13] $ 571      
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread [5],[8],[13],[14],[17],[31] 7.00%      
Principal [5],[8],[13],[14],[17],[31] $ 0      
Cost [5],[8],[13],[14],[17],[31] (26)      
Fair value [5],[8],[13],[14],[17],[31] $ (26)      
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[8],[13],[14],[17] 11.40%      
Reference Rate and Spread [5],[8],[13],[14],[17] 6.00%      
Principal [5],[8],[13],[14],[17] $ 6,421      
Cost [5],[8],[13],[14],[17] 6,303      
Fair value [5],[8],[13],[14],[17] $ 6,357      
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[8],[13],[14],[17] 13.40%      
Reference Rate and Spread [5],[8],[13],[14],[17] 8.00%      
Principal [5],[8],[13],[14],[17] $ 6,421      
Cost [5],[8],[13],[14],[17] 6,303      
Fair value [5],[8],[13],[14],[17] $ 6,356      
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.50% [5],[14],[15],[16] 12.50% [6],[29],[34],[39]    
Reference Rate and Spread 9.25% [5],[14],[15],[16] 9.25% [6],[29],[34],[39]    
Principal $ 761 [5],[14],[15],[16] $ 761 [6],[29],[34],[39]    
Cost 761 [5],[14],[15],[16] 761 [6],[29],[34],[39]    
Fair value $ 761 [5],[14],[15],[16] $ 761 [6],[29],[34],[39]    
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% [5],[14],[15],[16] 12.50% [6],[29],[34],[39]    
Reference Rate and Spread 9.25% [5],[14],[15],[16] 9.25% [6],[29],[34],[39]    
Principal $ 7,056 [5],[14],[15],[16] $ 7,056 [6],[29],[34],[39]    
Cost 7,056 [5],[14],[15],[16] 7,056 [6],[29],[34],[39]    
Fair value $ 1,075 [5],[14],[15],[16] $ 2,916 [6],[29],[34],[39]    
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,950 [33] 2,950 [32]    
Cost $ 4,280 [33] $ 4,280 [32]    
Fair value $ 5,620 [33] $ 7,080 [32] $ 5,670 7,710
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.44% [14] 14.12% [29] 12.56%  
Reference Rate and Spread 10.00% [14] 10.00% [29] 10.00%  
Principal $ 5,622 [14] $ 5,964 [29]    
Cost 5,622 [14] 5,964 [29]    
Fair value 5,505 [14] $ 5,964 [29] $ 6,084 8,037
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32],[41]   17,742    
Cost [32],[41]   $ 1,000    
Fair value $ 1,000 $ 1,000 [32],[41] $ 1,000 1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [33],[40] 17,742      
Cost [33],[40] $ 1,000      
Fair value [33],[40] $ 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%  
Principal $ 8,813 $ 8,813    
Cost 8,813 8,813    
Fair value $ 8,813 $ 8,813 $ 8,813 8,813
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [40] 13.00% [41] 13.00%  
Principal $ 1,000 [40] $ 1,000 [41]    
Cost 1,000 [40] 1,000 [41]    
Fair value $ 1,000 [40] $ 1,000 [41] $ 1,000 1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 82 [26] 82 [27]    
Cost $ 2,132 [26] $ 2,132 [27]    
Fair value 4,450 [26] 4,340 [27]    
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 1        
Schedule of Investments [Line Items]        
Fair value 1,874 1,828 1,795 1,712
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 2        
Schedule of Investments [Line Items]        
Fair value $ 2,576 $ 2,512 $ 2,465 2,348
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund III, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 1.55% [7],[8],[44] 1.55% [9],[10],[32],[45]    
Cost $ 6,527 [7],[8],[44] $ 7,062 [9],[10],[32],[45]    
Fair value $ 4,221 [7],[8],[44] $ 4,727 [9],[10],[32],[45]    
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund IV, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 0.59% [7],[8],[33],[44] 0.59% [9],[10],[32],[45]    
Cost $ 4,350 [7],[8],[33],[44] $ 4,350 [9],[10],[32],[45]    
Fair value $ 4,661 [7],[8],[33],[44] $ 4,541 [9],[10],[32],[45]    
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund V, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 1.31% [7],[8],[33],[44] 1.31% [9],[10],[45]    
Cost $ 2,000 [7],[8],[33],[44] $ 2,000 [9],[10],[45]    
Fair value $ 2,391 [7],[8],[33],[44] $ 2,229 [9],[10],[45]    
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 6 6    
Total Rate 6.00% 6.00% 6.00%  
PIK Rate 6.00% 6.00% 6.00%  
Cost $ 4,770 $ 4,770    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [15] 9.00% 9.00%  
Principal $ 16,980 [15] $ 17,355    
Cost 16,980 [15] 17,355    
Fair value $ 12,254 [15] $ 12,337 $ 14,006 14,370
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 10.42%      
Reference Rate and Spread 5.00% [5],[14],[17] 5.00% [6],[29],[30]    
Principal $ 465 [5],[14],[17] $ 0 [6],[29],[30]    
Cost 443 [5],[14],[17] (28) [6],[29],[30]    
Fair value $ 465 [5],[14],[17] $ 0 [6],[29],[30]    
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.42% [5],[14],[17] 8.91% [6],[29]    
Reference Rate and Spread 5.00% [5],[14],[17] 5.00% [6],[29]    
Principal $ 19,732 [5],[14],[17] $ 19,933 [6],[29]    
Cost 19,493 [5],[14],[17] 19,656 [6],[29]    
Fair value $ 19,732 [5],[14],[17] $ 19,933 [6],[29]    
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,788,527 1,788,527 [32]    
Cost $ 1,789 $ 1,789 [32]    
Fair value $ 1,789 $ 1,789 [32]    
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 596,176 596,176    
Cost $ 0 $ 0    
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: CBT Nuggets, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 416 [33] 416 [32]    
Cost $ 1,300 [33] $ 1,300 [32]    
Fair value 50,840 [33] $ 49,002 [32] 48,250 50,620
Investment, Identifier [Axis]: CMS Minerals Investments, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32],[41]   100    
Cost [32],[41]   $ 1,304    
Fair value $ 0 $ 1,670 [32],[41] 1,890 1,974
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6],[29],[46]   11.99%    
Reference Rate and Spread [6],[29],[46]   8.50%    
PIK Rate [6],[29],[46]   0.01%    
Principal [6],[29],[46]   $ 28,328    
Cost [6],[29],[46]   28,264    
Fair value [6],[29],[46]   $ 28,328    
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.07%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 5,003      
Cost [5],[14],[17] 4,998      
Fair value [5],[14],[17] $ 5,003      
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.07%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 1,557      
Cost [5],[14],[17] 1,555      
Fair value [5],[14],[17] $ 1,557      
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.07%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 2,048      
Cost [5],[14],[17] 2,046      
Fair value [5],[14],[17] $ 2,048      
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.07%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 587      
Cost [5],[14],[17] 586      
Fair value [5],[14],[17] $ 587      
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.07%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 61      
Cost [5],[14],[17] 61      
Fair value [5],[14],[17] $ 61      
Investment, Identifier [Axis]: Café Brazil, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,233 [33] 1,233 [32]    
Cost $ 1,742 [33] $ 1,742 [32]    
Fair value $ 2,030 [33] $ 2,210 [32] 2,370 2,570
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 6,157 [33] 6,157 [32]    
Cost $ 10,775 [33] $ 10,775 [32]    
Fair value $ 20,945 [33] $ 25,495 [32] $ 21,025 $ 13,275
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 3,671 [33] 3,671 [32]    
Total Rate 15.00% [33] 15.00% [32] 15.00%  
PIK Rate 15.00% [33] 15.00% [32]   15.00%
Cost $ 4,448 [33] $ 3,994 [32]    
Fair value $ 4,448 [33] $ 3,994 [32] $ 3,853 $ 9,510
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.50% [14],[17] 13.75% [29] 12.38%  
Reference Rate and Spread 10.00% [14],[17] 10.00% [29] 10.00%  
Principal $ 28,000 [14],[17] $ 28,000 [29]    
Cost 27,961 [14],[17] 27,951 [29]    
Fair value $ 27,961 [14],[17] $ 28,000 [29] $ 28,000 27,915
Investment, Identifier [Axis]: Camin Cargo Control, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.93% [11],[14],[17] 10.88% [12],[29]    
Reference Rate and Spread 6.50% [11],[14],[17] 6.50% [12],[29]    
Principal $ 15,098 [11],[14],[17] $ 15,218 [12],[29]    
Cost 15,015 [11],[14],[17] 15,110 [12],[29]    
Fair value $ 14,569 [11],[14],[17] $ 14,685 [12],[29]    
Investment, Identifier [Axis]: Career Team Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 450,000 450,000    
Cost $ 4,500 $ 4,500    
Fair value $ 4,500 $ 4,500 $ 4,500 4,500
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   8.63%  
Reference Rate and Spread 6.00% [14],[17],[31] 6.00% [29],[30] 6.00%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost (21) [14],[17],[31] (9) [29],[30]    
Fair value $ (21) [14],[17],[31] $ (9) [29],[30] $ 0 0
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 12.50% 12.50%  
Principal $ 20,160 $ 20,250    
Cost 20,031 20,090    
Fair value $ 20,031 $ 20,090 $ 20,080 20,050
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 245,926 [5] 245,926 [6]    
Cost $ 246 [5] $ 246 [6]    
Fair value $ 246 [5] $ 246 [6]    
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.00% [5],[14],[17],[31] 6.00% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (9) [5],[14],[17],[31] (11) [6],[29],[30]    
Fair value $ (9) [5],[14],[17],[31] $ (11) [6],[29],[30]    
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.65% [5],[14],[17] 10.73% [6],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.00% [6],[29]    
Principal $ 7,973 [5],[14],[17] $ 7,993 [6],[29]    
Cost 7,908 [5],[14],[17] 7,914 [6],[29]    
Fair value $ 7,973 [5],[14],[17] $ 7,914 [6],[29]    
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.65% [5],[14],[17] 10.48% [6],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 5.75% [6],[29]    
Principal $ 6,133 [5],[14],[17] $ 6,133 [6],[29]    
Cost 6,089 [5],[14],[17] 6,079 [6],[29]    
Fair value $ 6,133 [5],[14],[17] $ 6,133 [6],[29]    
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 13,309 13,309    
Cost $ 6,122 $ 6,122    
Fair value $ 10,400 $ 8,700 $ 8,160 5,840
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 9.00% [14],[17],[31] 9.00% [29],[30] 9.00%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost 0 [14],[17],[31] 0 [29],[30]    
Fair value $ 0 [14],[17],[31] $ 0 [29],[30] $ 0 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.48% [14],[17] 13.13% [29] 11.63%  
Reference Rate and Spread 9.00% [14],[17] 9.00% [29] 9.00%  
Principal $ 17,574 [14],[17] $ 15,030 [29]    
Cost 17,504 [14],[17] 14,954 [29]    
Fair value $ 17,574 [14],[17] $ 14,954 [29] $ 14,947 8,864
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 4,347 [33] 4,347 [32]    
Cost $ 11,440 [33] $ 11,440 [32]    
Fair value $ 25,930 [33] $ 22,920 [32] 22,330 24,140
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 1,047,146 [33],[40] 1,047,146 [32],[41]    
Cost $ 1,773 [33],[40] $ 1,773 [32],[41]    
Fair value $ 2,970 [33],[40] $ 2,710 [32],[41] $ 1,991 1,540
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     8.63%  
Reference Rate and Spread 6.00% [14],[17],[31] 6.00% [29],[30] 6.00%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost (140) [14],[17],[31] 0 [29],[30]    
Fair value $ 0 [14],[17],[31] $ 0 [29],[30] $ 0 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.49% [14],[17] 12.13% [29] 10.63%  
Reference Rate and Spread 8.00% [14],[17] 8.00% [29] 8.00%  
Principal $ 16,407 [14],[17] $ 16,945 [29]    
Cost 16,402 [14],[17] 16,935 [29]    
Fair value 16,407 [14],[17] $ 16,945 [29] $ 17,466 17,817
Investment, Identifier [Axis]: Chandler Signs Holdings, LLC, Class A Units        
Schedule of Investments [Line Items]        
Units (in shares) [6]   1,500,000    
Cost [6]   $ 1,500    
Fair value $ 0 $ 1,790 [6] 970 460
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.58% [5],[14],[17],[47] 10.72% [6],[28],[29],[48]    
Reference Rate and Spread 7.00% [5],[14],[17],[47] 6.25% [6],[28],[29],[48]    
Principal $ 3,107 [5],[14],[17],[47] $ 1,868 [6],[28],[29],[48]    
Cost 2,923 [5],[14],[17],[47] 1,767 [6],[28],[29],[48]    
Fair value $ 3,007 [5],[14],[17],[47] $ 1,841 [6],[28],[29],[48]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.53% [5],[14],[17] 10.71% [6],[28],[29],[49]    
Reference Rate and Spread 7.00% [5],[14],[17] 6.25% [6],[28],[29],[49]    
Principal $ 36,633 [5],[14],[17] $ 39,047 [6],[28],[29],[49]    
Cost 36,132 [5],[14],[17] 38,396 [6],[28],[29],[49]    
Fair value $ 35,451 [5],[14],[17] $ 38,484 [6],[28],[29],[49]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.53%      
Reference Rate and Spread [5],[14],[17] 7.00%      
Principal [5],[14],[17] $ 2,030      
Cost [5],[14],[17] 2,002      
Fair value [5],[14],[17] $ 1,964      
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.53%      
Reference Rate and Spread [5],[14],[17] 7.00%      
Principal [5],[14],[17] $ 4,905      
Cost [5],[14],[17] 4,796      
Fair value [5],[14],[17] $ 4,747      
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,829 [33] 1,829 [32]    
Cost $ 1,963 [33] $ 1,963 [32]    
Fair value $ 14,010 [33] $ 13,340 [32] $ 13,210 13,990
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 5,694 $ 5,694    
Cost 4,670 4,643    
Fair value $ 5,694 $ 5,694 $ 5,694 5,694
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 717 [33] 717 [32]    
Cost $ 7,280 [33] $ 7,280 [32]    
Fair value $ 5,580 [33] $ 8,220 [32] 9,490 10,250
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 800 [40] 800 [41]    
Cost $ 509 [40] $ 210 [41]    
Fair value 1,129 [40] $ 610 [41] $ 610 530
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     12.13%  
Reference Rate and Spread   9.00% [28],[29],[30] 9.50%  
Principal 0 [31] $ 0 [28],[29],[30]    
Cost 0 [31] 0 [28],[29],[30]    
Fair value $ 0 [31] $ 0 [28],[29],[30] $ 10,430 10,401
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.50% 13.23% [28],[29] 10.00%  
Reference Rate and Spread [28],[29]   9.00%    
Principal $ 8,800 $ 10,480 [28],[29]    
Cost 8,790 10,440 [28],[29]    
Fair value $ 8,652 $ 10,440 [28],[29] $ 1,047 1,071
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00%    
Principal $ 1,022 $ 1,049    
Cost 1,013 1,039    
Fair value $ 1,013 $ 1,039    
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.00% [5],[15],[16] 15.00% [6],[34],[39]    
PIK Rate 15.00% [5],[15],[16] 15.00% [6],[34],[39]    
Principal $ 2,687 [5],[15],[16] $ 2,712 [6],[34],[39]    
Cost 2,687 [5],[15],[16] 2,712 [6],[34],[39]    
Fair value $ 19 [5],[15],[16] $ 19 [6],[34],[39]    
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 154 [33] 154 [32]    
Cost $ 5,760 [33] $ 5,760 [32]    
Fair value $ 16,000 [33] $ 24,637 [32] $ 23,790 15,260
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.50% [14],[17] 9.75% [29] 8.38%  
Reference Rate and Spread 6.00% [14],[17] 6.00% [29] 6.00%  
Principal $ 4,560 [14],[17] $ 4,560 [29]    
Cost 4,560 [14],[17] 4,560 [29]    
Fair value $ 4,560 [14],[17] $ 4,560 [29] $ 7,760 4,000
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 8.00% 8.00% 8.00%  
Principal $ 19,274 $ 19,274    
Cost 19,214 19,182    
Fair value $ 19,274 $ 19,274 $ 19,274 19,274
Investment, Identifier [Axis]: Cody Pools, Inc., Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 587 [33],[40] 587 [32],[41]    
Cost $ 8,317 [33],[40] $ 8,317 [32],[41]    
Fair value 69,150 [33],[40] $ 58,180 [32],[41] $ 57,210 47,640
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [29]   15.38%    
Reference Rate and Spread   10.50% [29] 10.50%  
Principal 0 [31] $ 1,462 [29]    
Cost (11) [31] 1,443 [29]    
Fair value 0 [31] 1,462 [29] $ (11) (13)
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 15.38% [29] 13.63%  
Reference Rate and Spread   10.50% [29] 10.50%  
Principal $ 43,556 $ 40,801 [29]    
Cost 43,522 40,521 [29]    
Fair value $ 43,556 40,801 [29] $ 41,225 42,497
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2.1        
Schedule of Investments [Line Items]        
Total Rate 12.50%      
Fair value $ 43,556 0    
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Reference Rate and Spread 10.50%      
Fair value $ 0 1,462    
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 4        
Schedule of Investments [Line Items]        
Reference Rate and Spread 10.50%      
Fair value $ 0 $ 40,801    
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32]   17,280    
Cost [32]   $ 7,680    
Fair value   9,160 [32] 9,210 9,130
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 960      
Cost $ 960      
Fair value $ 2,400 0    
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 17,280      
Cost $ 7,680      
Fair value 7,680 9,160    
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [31] 0 [30]    
Cost 0 [31] 0 [30]    
Fair value $ 0 [31] $ 0 [30] $ 0 0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 22,365 $ 23,310    
Cost 22,248 23,151    
Fair value $ 21,747 $ 23,151 $ 23,451 24,351
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,975 [33] 1,975 [32]    
Cost $ 1,975 [33] $ 1,975 [32]    
Fair value $ 15,430 [33] $ 19,830 [32] $ 18,570 12,000
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [14],[17] 14.48%      
Reference Rate and Spread [14],[17] 9.00%      
Principal [14],[17] $ 3,869      
Cost [14],[17] 3,867      
Fair value [14],[17] $ 3,869      
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 9.00% 9.00% [29],[30],[39] 9.00%  
Principal [29],[30],[39]   $ 0    
Cost [29],[30],[39]   0    
Fair value $ 0 $ 0 [29],[30],[39] $ 0 0
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.48% 13.13% [29] 11.63%  
Reference Rate and Spread 9.00% 9.00% [29] 9.00%  
Principal [29]   $ 5,241    
Cost [29]   5,232    
Fair value $ 3,869 $ 5,241 [29] $ 5,350 6,477
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.61% [5],[14],[17],[50] 12.56% [6],[29],[51]    
Reference Rate and Spread 8.00% [5],[14],[17],[50] 8.00% [6],[29],[51]    
Principal $ 5,000 [5],[14],[17],[50] $ 5,000 [6],[29],[51]    
Cost 4,943 [5],[14],[17],[50] 4,928 [6],[29],[51]    
Fair value $ 4,804 [5],[14],[17],[50] $ 4,621 [6],[29],[51]    
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.52% [5],[14],[17] 12.56% [6],[29]    
Reference Rate and Spread 8.00% [5],[14],[17] 8.00% [6],[29]    
Principal $ 18,381 [5],[14],[17] $ 18,588 [6],[29]    
Cost 18,168 [5],[14],[17] 18,315 [6],[29]    
Fair value $ 17,660 [5],[14],[17] $ 17,178 [6],[29]    
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 13.32% [7],[8],[33],[44] 13.32% [9],[10],[32],[45]    
Cost $ 4,778 [7],[8],[33],[44] $ 8,096 [9],[10],[32],[45]    
Fair value 4,426 [7],[8],[33],[44] 7,657 [9],[10],[32],[45]    
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)        
Schedule of Investments [Line Items]        
Fair value $ 4,426 $ 7,657 7,854 9,959
Investment, Identifier [Axis]: Construction Supply Investments, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 861,618 [5] 861,618 [6],[32]    
Cost $ 3,335 [5] $ 3,335 [6],[32]    
Fair value $ 23,135 [5] $ 21,165 [6],[32]    
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 38.75% [7],[8],[33],[44] 38.75% [9],[10],[45]    
Cost $ 588 [7],[8],[33],[44] $ 588 [9],[10],[45]    
Fair value $ 588 [7],[8],[33],[44] 588 [9],[10],[45] 710 710
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 556      
Cost $ 15,000      
Fair value 15,000 0    
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [31] 0      
Cost [31] 0      
Fair value $ 0 [31] 0    
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 29,000      
Cost 28,734      
Fair value $ 28,734 $ 0    
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 5,944 5,944    
Cost $ 5,944 $ 5,944    
Fair value $ 7,260 $ 7,260 $ 7,260 5,944
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 20,000 $ 21,200    
Cost 19,867 21,035    
Fair value $ 20,000 $ 21,200 $ 21,200 20,993
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 776,316 [5] 776,316 [6]    
Total Rate 8.00% [5] 8.00% [6]    
PIK Rate 8.00% [5] 8.00% [6]    
Cost $ 776 [5] $ 776 [6]    
Fair value $ 260 [5] $ 380 [6]    
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)        
Schedule of Investments [Line Items]        
Units (in shares) [5],[33] 723,684      
Total Rate 10.00% [5],[33] 10.00% [6],[32]    
PIK Rate 10.00% [5],[33] 10.00% [6],[32]    
Cost $ 1,252 [5],[33] $ 1,161 [6],[32]    
Fair value $ 1,252 [5],[33] $ 1,161 [6],[32]    
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread [6],[29],[30]   7.50%    
Principal [6],[29],[30]   $ 0    
Cost [6],[29],[30]   (1)    
Fair value [6],[29],[30]   $ (1)    
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [6],[29]   12.24%    
Reference Rate and Spread [6],[29]   7.50%    
Principal [6],[29]   $ 6,074    
Cost [6],[29]   6,065    
Fair value [6],[29]   $ 5,934    
Investment, Identifier [Axis]: Dalton US Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 201 [5] 201 [6]    
Cost $ 201 [5] $ 201 [6]    
Fair value $ 201 [5] $ 201 [6]    
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.92% [5],[14],[17],[52] 11.90% [6],[28],[29]    
Reference Rate and Spread 8.50% [5],[14],[17],[52] 8.00% [6],[28],[29]    
Principal $ 803 [5],[14],[17],[52] $ 1,092 [6],[28],[29]    
Cost 618 [5],[14],[17],[52] 871 [6],[28],[29]    
Fair value $ 803 [5],[14],[17],[52] $ 1,077 [6],[28],[29]    
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 14.18%      
Reference Rate and Spread 8.50% [5],[14],[17] 8.00% [6],[28],[29],[30]    
Principal $ 4,015 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 3,954 [5],[14],[17] (74) [6],[28],[29],[30]    
Fair value $ 4,015 [5],[14],[17] $ (74) [6],[28],[29],[30]    
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.92% [5],[14],[17] 12.56% [6],[28],[29]    
Reference Rate and Spread 8.50% [5],[14],[17] 8.00% [6],[28],[29]    
Principal $ 14,245 [5],[14],[17] $ 14,389 [6],[28],[29]    
Cost 14,024 [5],[14],[17] 14,125 [6],[28],[29]    
Fair value $ 14,245 [5],[14],[17] $ 14,186 [6],[28],[29]    
Investment, Identifier [Axis]: Datacom, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 9,000 [33] 9,000 [32]    
Cost $ 2,610 [33] $ 2,610 [32]    
Fair value $ 240 [33] $ 2,670 [32] $ 2,670 2,610
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 7.50% 7.50% 7.50%  
Principal $ 540 $ 223    
Cost 536 223    
Fair value $ 536 $ 223 $ 223 0
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 7.50% 7.50%  
Principal $ 8,420 $ 8,622    
Cost 8,103 8,190    
Fair value $ 7,617 $ 7,789 $ 7,749 7,668
Investment, Identifier [Axis]: Digital Products Holdings LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3,857 [33] 3,857 [32]    
Cost $ 9,501 [33] $ 9,501 [32]    
Fair value $ 9,835 [33] $ 9,835 [32] $ 9,835 9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.38% [14],[17] 14.13% [29] 12.63%  
Reference Rate and Spread 10.00% [14],[17] 10.00% [29] 10.00%  
Principal $ 14,873 [14],[17] $ 15,533 [29]    
Cost 14,745 [14],[17] 15,523 [29]    
Fair value $ 14,678 [14],[17] $ 15,523 [29] $ 15,844 16,801
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 8,400 [33] 8,400 [32]    
Cost $ 8,400 [33] $ 8,400 [32]    
Fair value $ 21,370 [33] $ 22,220 [32] $ 22,220 18,350
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 14.00%   13.63%  
Reference Rate and Spread   11.00% [29],[30] 11.00%  
Principal $ 1,275 $ 0 [29],[30]    
Cost 1,208 (88) [29],[30]    
Fair value $ 1,275 $ 0 [29],[30] $ 3,400 (22)
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.00% 15.13% [29] 13.63%  
Reference Rate and Spread   11.00% [29] 11.00%  
Principal $ 25,953 $ 27,267 [29]    
Cost 25,856 27,122 [29]    
Fair value $ 25,953 $ 27,267 [29] $ 23,050 24,070
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners - A, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 6.43% [7],[8],[44] 6.43% [9],[10],[45]    
Cost $ 2,005 [7],[8],[44] $ 2,051 [9],[10],[45]    
Fair value $ 2,679 [7],[8],[44] $ 2,898 [9],[10],[45] 9,182 10,329
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners, LP)        
Schedule of Investments [Line Items]        
Units (percentage) 20.24% [7],[8],[44] 20.24% [9],[10],[45]    
Cost $ 6,313 [7],[8],[44] $ 6,459 [9],[10],[45]    
Fair value $ 8,594 [7],[8],[44] $ 9,127 [9],[10],[45] 2,916 3,280
Investment, Identifier [Axis]: Dos Rios Stone Products LLC, Class A Preferred Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,000,000 [5],[40] 2,000,000 [6],[41]    
Cost $ 2,000 [5],[40] $ 2,000 [6],[41]    
Fair value $ 1,580 [5],[40] $ 1,330 [6],[41] 350 640
Investment, Identifier [Axis]: Dreyfus Government Cash Management        
Schedule of Investments [Line Items]        
Total Rate 4.96%      
Cost [53] $ 36,507      
Fair value [53] $ 36,507      
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,250,000 [5] 1,250,000 [6]    
Cost $ 0 [5] $ 0 [6]    
Fair value $ 0 [5] $ 0 [6]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 125,000 [5] 125,000 [6]    
Cost $ 128 [5] $ 128 [6]    
Fair value $ 128 [5] $ 128 [6]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 2,376,241 [5] 2,376,241 [6]    
Cost $ 0 [5] $ 0 [6]    
Fair value $ 0 [5] $ 0 [6]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.91% [5],[14],[17] 9.18% [6],[28],[29]    
Reference Rate and Spread 4.50% [5],[14],[17] 4.50% [6],[28],[29]    
PIK Rate 9.91% [5],[14],[17] 9.18% [6],[28],[29]    
Principal $ 2,006 [5],[14],[17] $ 1,875 [6],[28],[29]    
Cost 1,847 [5],[14],[17] 1,717 [6],[28],[29]    
Fair value $ 1,847 [5],[14],[17] $ 1,717 [6],[28],[29]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.91% [5],[14],[17] 11.18% [6],[28],[29]    
Reference Rate and Spread 6.50% [5],[14],[17] 6.50% [6],[28],[29]    
PIK Rate 11.91% [5],[14],[17] 11.18% [6],[28],[29]    
Principal $ 2,032 [5],[14],[17] $ 1,875 [6],[28],[29]    
Cost 1,798 [5],[14],[17] 1,642 [6],[28],[29]    
Fair value $ 1,562 [5],[14],[17] $ 1,642 [6],[28],[29]    
Investment, Identifier [Axis]: EIG Fund Investments, LP Interests (EIG Global Private Debt Fund-A, L.P.)        
Schedule of Investments [Line Items]        
Units (in shares) 5,000,000 [7],[8],[33],[44] 5,000,000 [9],[10],[32],[45]    
Cost $ 1,020 [7],[8],[33],[44] $ 1,060 [9],[10],[32],[45]    
Fair value $ 973 [7],[8],[33],[44] $ 1,013 [9],[10],[32],[45] 1,470 547
Investment, Identifier [Axis]: EPIC Y-Grade Services, LP, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[29]   10.70%    
Reference Rate and Spread [12],[29]   6.00%    
Principal [12],[29]   $ 6,823    
Cost [12],[29]   6,764    
Fair value [12],[29]   $ 6,141    
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.54% [5],[14],[17] 11.73% [6],[29]    
Reference Rate and Spread 8.00% [5],[14],[17] 7.00% [6],[29]    
Principal $ 967 [5],[14],[17] $ 3,346 [6],[29]    
Cost 925 [5],[14],[17] 3,290 [6],[29]    
Fair value $ 917 [5],[14],[17] $ 3,276 [6],[29]    
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.54% [5],[14],[17] 11.73% [6],[29]    
Reference Rate and Spread 8.00% [5],[14],[17] 7.00% [6],[29]    
Principal $ 4,792 [5],[14],[17] $ 5,021 [6],[29]    
Cost 4,754 [5],[14],[17] 4,967 [6],[29]    
Fair value $ 4,545 [5],[14],[17] $ 4,916 [6],[29]    
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.54% [5],[14],[17] 11.73% [6],[29]    
Reference Rate and Spread 8.00% [5],[14],[17] 7.00% [6],[29]    
Principal $ 9,557 [5],[14],[17] $ 23,456 [6],[29]    
Cost 9,473 [5],[14],[17] 23,149 [6],[29]    
Fair value $ 9,067 [5],[14],[17] $ 22,967 [6],[29]    
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.54%      
Reference Rate and Spread [5],[14],[17] 8.00%      
Principal [5],[14],[17] $ 1,982      
Cost [5],[14],[17] 1,962      
Fair value [5],[14],[17] $ 1,880      
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.54%      
Reference Rate and Spread [5],[14],[17] 8.00%      
Principal [5],[14],[17] $ 10,846      
Cost [5],[14],[17] 10,734      
Fair value [5],[14],[17] $ 10,289      
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 285 378    
Cost $ 5,726 $ 7,603    
Fair value $ 6,090 $ 7,603    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 939 [40] 939 [41]    
Cost $ 1,558 [40] $ 1,558 [41]    
Fair value $ 1,670 [40] $ 1,558 [41]    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.00% [14],[17],[31] 6.00% [28],[29],[30]    
Principal $ 0 [14],[17],[31] $ 0 [28],[29],[30]    
Cost (8) [14],[17],[31] (9) [28],[29],[30]    
Fair value $ (8) [14],[17],[31] $ (9) [28],[29],[30]    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00%    
Principal $ 18,773 $ 18,773    
Cost 18,623 18,594    
Fair value $ 18,623 $ 18,594    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.00% 9.00%    
Principal $ 6,324 $ 6,357    
Cost 6,263 6,294    
Fair value $ 6,263 $ 6,294    
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.82% [11],[14],[17] 10.67% [12],[28],[29]    
Reference Rate and Spread 6.25% [11],[14],[17] 6.25% [12],[28],[29]    
Principal $ 9,023 [11],[14],[17] $ 9,258 [12],[28],[29]    
Cost 8,891 [11],[14],[17] 9,099 [12],[28],[29]    
Fair value $ 8,663 [11],[14],[17] $ 8,787 [12],[28],[29]    
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund IX, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 0.10% [7],[8],[33],[44] 0.10% [9],[10],[32],[45]    
Cost $ 3,577 [7],[8],[33],[44] $ 3,699 [9],[10],[32],[45]    
Fair value $ 1,514 [7],[8],[33],[44] $ 2,019 [9],[10],[32],[45]    
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 0.38% [7],[8],[33],[44] 0.38% [9],[10],[32],[45]    
Cost $ 1,979 [7],[8],[33],[44] $ 1,984 [9],[10],[32],[45]    
Fair value $ 950 [7],[8],[33],[44] $ 1,037 [9],[10],[32],[45]    
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 0.14% [7],[8],[33],[44] 0.14% [9],[10],[32],[45]    
Cost $ 3,566 [7],[8],[33],[44] $ 3,566 [9],[10],[32],[45]    
Fair value $ 1,917 [7],[8],[33],[44] $ 2,092 [9],[10],[32],[45]    
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund X, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 0.15% [7],[8],[33],[44] 0.15% [9],[10],[32],[45]    
Cost $ 6,639 [7],[8],[33],[44] $ 8,236 [9],[10],[32],[45]    
Fair value $ 5,609 [7],[8],[33],[44] $ 9,351 [9],[10],[32],[45]    
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund II, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 0.84% [7],[8],[33],[44] 0.84% [9],[10],[45]    
Cost $ 5,083 [7],[8],[33],[44] $ 5,358 [9],[10],[45]    
Fair value $ 1,413 [7],[8],[33],[44] $ 1,688 [9],[10],[45]    
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund III, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 0.25% [7],[8],[33],[44] 0.25% [9],[10],[32],[45]    
Cost $ 4,745 [7],[8],[33],[44] $ 6,023 [9],[10],[32],[45]    
Fair value $ 4,458 [7],[8],[33],[44] $ 5,718 [9],[10],[32],[45]    
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29]   11.68%    
Reference Rate and Spread 5.50% [5],[14],[31] 6.50% [6],[28],[29]    
Principal $ 0 [5],[14],[31] $ 131 [6],[28],[29]    
Cost (38) [5],[14],[31] 85 [6],[28],[29]    
Fair value $ 0 [5],[14],[31] $ 131 [6],[28],[29]    
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.98% [5],[14],[17] 10.92% [6],[28],[29]    
Reference Rate and Spread 6.50% [5],[14],[17] 6.50% [6],[28],[29]    
Principal $ 16,175 [5],[14],[17] $ 16,338 [6],[28],[29]    
Cost 15,926 [5],[14],[17] 16,047 [6],[28],[29]    
Fair value $ 16,175 [5],[14],[17] $ 16,338 [6],[28],[29]    
Investment, Identifier [Axis]: Escalent, Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5] 649,794      
Cost [5] $ 663      
Fair value [5] $ 663      
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread [5],[17],[29],[31] 8.00%      
Principal [5],[17],[29],[31] $ 0      
Cost [5],[17],[29],[31] (36)      
Fair value [5],[17],[29],[31] $ (36)      
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[17],[29] 13.49%      
Reference Rate and Spread [5],[17],[29] 8.00%      
Principal [5],[17],[29] $ 26,433      
Cost [5],[17],[29] 25,705      
Fair value [5],[17],[29] $ 26,168      
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.65% [5],[14],[17],[40] 10.67% [6],[29],[41]    
Reference Rate and Spread 7.00% [5],[14],[17],[40] 7.00% [6],[29],[41]    
Principal $ 3,692 [5],[14],[17],[40] $ 3,692 [6],[29],[41]    
Cost 3,668 [5],[14],[17],[40] 3,663 [6],[29],[41]    
Fair value $ 3,692 [5],[14],[17],[40] $ 3,507 [6],[29],[41]    
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.65% [5],[14],[17],[40] 10.67% [6],[29],[41]    
Reference Rate and Spread 7.00% [5],[14],[17],[40] 7.00% [6],[29],[41]    
Principal $ 44,308 [5],[14],[17],[40] $ 44,308 [6],[29],[41]    
Cost 44,021 [5],[14],[17],[40] 43,955 [6],[29],[41]    
Fair value $ 44,308 [5],[14],[17],[40] $ 42,083 [6],[29],[41]    
Investment, Identifier [Axis]: Fidelity Government Fund        
Schedule of Investments [Line Items]        
Total Rate 4.99%      
Cost [54] $ 826      
Fair value [54] $ 826      
Investment, Identifier [Axis]: Fidelity Treasury        
Schedule of Investments [Line Items]        
Total Rate 4.98%      
Cost [55] $ 71      
Fair value [55] $ 71      
Investment, Identifier [Axis]: Flame King Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 9,360 [33] 9,360 [32]    
Cost $ 10,400 [33] $ 10,400 [32]    
Fair value $ 27,900 [33] $ 17,580 [32] $ 13,840 10,400
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   10.75% [29] 9.25%  
Reference Rate and Spread 6.50% 6.50% [29] 6.50%  
Principal [29]   $ 7,600    
Cost [29]   7,537    
Fair value $ 0 $ 7,600 [29] $ 7,600 6,324
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   13.25% [29] 13.75%  
Reference Rate and Spread 9.00% 9.00% [29] 11.00%  
Principal [29]   $ 21,200    
Cost [29]   21,038    
Fair value $ 0 $ 21,200 [29] $ 21,200 20,996
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.90% [5],[17] 11.21% [6],[28],[29]    
Reference Rate and Spread 7.50% [5],[17] 7.50% [6],[28],[29]    
Principal $ 982 [5],[17] $ 736 [6],[28],[29]    
Cost 982 [5],[17] 736 [6],[28],[29]    
Fair value $ 982 [5],[17] $ 736 [6],[28],[29]    
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.01% [5],[17] 12.19% [6],[28],[29]    
Reference Rate and Spread 7.50% [5],[17] 7.50% [6],[28],[29]    
Principal $ 6,185 [5],[17] $ 11,095 [6],[28],[29]    
Cost 6,111 [5],[17] 10,852 [6],[28],[29]    
Fair value $ 6,185 [5],[17] $ 11,095 [6],[28],[29]    
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[17] 12.98%      
Reference Rate and Spread [5],[17] 7.50%      
Principal [5],[17] $ 4,909      
Cost [5],[17] 4,802      
Fair value [5],[17] $ 4,909      
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport Financial SBIC Fund LP)        
Schedule of Investments [Line Items]        
Units (percentage) 9.30% [7],[8],[44] 9.30% [9],[10],[45]    
Cost $ 3,507 [7],[8],[44] $ 3,507 [9],[10],[45]    
Fair value $ 3,497 [7],[8],[44] $ 3,483 [9],[10],[45]    
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport First Lien Loan Fund III LP)        
Schedule of Investments [Line Items]        
Units (percentage) 5.95% [7],[8],[33],[44] 5.95% [9],[10],[32],[45]    
Cost $ 5,328 [7],[8],[33],[44] $ 6,303 [9],[10],[32],[45]    
Fair value 4,873 [7],[8],[33],[44] 5,848 [9],[10],[32],[45]    
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport Financial SBIC Fund LP)        
Schedule of Investments [Line Items]        
Fair value 3,497 3,483 4,116 6,078
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport First Lien Loan Fund III LP)        
Schedule of Investments [Line Items]        
Fair value $ 4,873 $ 5,848 6,175 7,231
Investment, Identifier [Axis]: Fuse, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 10,429 [11] 10,429 [12]    
Cost $ 256 [11] $ 256 [12]    
Fair value $ 0 [11] $ 0 [12]    
Investment, Identifier [Axis]: Fuse, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [11] 12.00% [12]    
Principal $ 1,810 [11] $ 1,810 [12]    
Cost 1,810 [11] 1,810 [12]    
Fair value $ 1,374 [11] 1,512 [12]    
Investment, Identifier [Axis]: GFG Group, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [33] 226      
Cost [33] $ 4,900      
Fair value $ 10,380 [33] 7,140 $ 7,140 6,990
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 8.00%   9.00%  
Principal $ 10,545      
Cost 10,491      
Fair value $ 10,545 $ 11,345 $ 11,745 12,545
Investment, Identifier [Axis]: GFG Group, LLC., Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32]   226    
Cost [32]   $ 4,900    
Fair value [32]   $ 7,140    
Investment, Identifier [Axis]: GFG Group, LLC., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   9.00%    
Principal   $ 11,345    
Cost   11,269    
Fair value   $ 11,345    
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 5,879 5,879 [32]    
Cost $ 13,065 $ 13,065 [32]    
Fair value $ 44,440 $ 44,440 [32] $ 46,190 46,190
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate     10.56%  
Reference Rate and Spread     8.00%  
Fair value     $ 40,493 38,885
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.48% [17] 10.12%    
Reference Rate and Spread 6.00% [17] 6.00%    
Principal $ 1,702 [17] $ 670    
Cost 1,697 [17] 670    
Fair value $ 1,702 [17] $ 670    
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.48% [17] 12.12%    
Reference Rate and Spread 8.00% [17] 8.00%    
Principal $ 40,493 [17] $ 40,493    
Cost 40,348 [17] 40,313    
Fair value $ 40,493 [17] $ 40,493    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.92% [5],[14],[17],[56] 11.20% [6],[29]    
Reference Rate and Spread 6.50% [5],[14],[17],[56] 6.50% [6],[29]    
Principal $ 1,955 [5],[14],[17],[56] $ 2,177 [6],[29]    
Cost 1,950 [5],[14],[17],[56] 2,169 [6],[29]    
Fair value $ 1,955 [5],[14],[17],[56] $ 2,171 [6],[29]    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.92% [5],[14],[17],[31] 11.24% [6],[29]    
Reference Rate and Spread 6.50% [5],[14],[17],[31] 6.50% [6],[29]    
Principal $ 0 [5],[14],[17],[31] $ 10,734 [6],[29]    
Cost (11) [5],[14],[17],[31] 10,695 [6],[29]    
Fair value $ (11) [5],[14],[17],[31] $ 10,705 [6],[29]    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.92%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 10,651      
Cost [5],[14],[17] 10,629      
Fair value [5],[14],[17] $ 10,651      
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.93%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 955      
Cost [5],[14],[17] 955      
Fair value [5],[14],[17] $ 955      
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29]   10.42%    
Reference Rate and Spread 5.75% [5],[14],[17],[31] 6.00% [6],[28],[29]    
Principal $ 0 [5],[14],[17],[31] $ 252 [6],[28],[29]    
Cost (17) [5],[14],[17],[31] 233 [6],[28],[29]    
Fair value $ 0 [5],[14],[17],[31] $ 252 [6],[28],[29]    
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.38%      
Reference Rate and Spread 5.75% [5],[14],[17] 6.00% [6],[28],[29],[30]    
Principal $ 301 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 286 [5],[14],[17] (15) [6],[28],[29],[30]    
Fair value $ 301 [5],[14],[17] $ (15) [6],[28],[29],[30]    
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.29% [5],[14],[17] 10.73% [6],[28],[29]    
Reference Rate and Spread 5.75% [5],[14],[17] 6.00% [6],[28],[29]    
Principal $ 3,624 [5],[14],[17] $ 3,661 [6],[28],[29]    
Cost 3,564 [5],[14],[17] 3,591 [6],[28],[29]    
Fair value $ 3,624 [5],[14],[17] $ 3,661 [6],[28],[29]    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 9,042 [33] 9,042 [32]    
Cost $ 17,692 [33] $ 17,692 [32]    
Fair value $ 81,610 [33] $ 50,890 [32] $ 46,470 49,700
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     10.63%  
Reference Rate and Spread 7.50% [14],[17],[31],[36] 8.50% [28],[29],[30] 8.00%  
Principal $ 0 [14],[17],[31],[36] $ 0 [28],[29],[30]    
Cost 0 [14],[17],[31],[36] 0 [28],[29],[30]    
Fair value $ 0 [14],[17],[31],[36] $ 0 [28],[29],[30] $ 0 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[17],[36] 11.50% [28],[29] 10.63%  
Reference Rate and Spread 7.50% [14],[17],[36] 8.50% [28],[29] 8.00%  
Principal $ 56,478 [14],[17],[36] $ 64,078 [28],[29]    
Cost 56,184 [14],[17],[36] 63,685 [28],[29]    
Fair value $ 56,478 [14],[17],[36] $ 64,078 [28],[29] $ 24,078 21,598
Investment, Identifier [Axis]: Garreco, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,200 1,200 [32]    
Cost $ 1,200 $ 1,200 [32]    
Fair value $ 1,580 $ 1,800 [32] $ 1,990 2,270
Investment, Identifier [Axis]: Garreco, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [14],[17],[57] 9.50% [29],[58] 9.50%  
Reference Rate and Spread 10.00% [14],[17],[57] 8.00% [29],[58] 8.00%  
Principal $ 3,088 [14],[17],[57] $ 3,826 [29],[58]    
Cost 3,088 [14],[17],[57] 3,826 [29],[58]    
Fair value $ 3,088 [14],[17],[57] $ 3,826 [29],[58] $ 3,826 4,196
Investment, Identifier [Axis]: GeoStabilization International (GSI), Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.80% [11],[17] 9.44% [12],[28]    
Reference Rate and Spread 5.25% [11],[17] 5.25% [12],[28]    
Principal $ 20,337 [11],[17] $ 20,497 [12],[28]    
Cost 20,285 [11],[17] 20,427 [12],[28]    
Fair value $ 19,981 [11],[17] $ 19,472 [12],[28]    
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 438 [33] 438 [32]    
Cost $ 2,980 [33] $ 2,980 [32]    
Fair value $ 8,770 [33] $ 6,790 [32] 5,810 5,640
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3,681 3,681    
Cost $ 3,681 $ 3,681    
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units 1        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units 2        
Schedule of Investments [Line Items]        
Fair value     $ 3,920 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 63,720 63,720    
Cost $ 5,600 $ 5,600    
Fair value $ 2,800 $ 3,780    
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 9.50% [14],[17],[31] 9.50% [29],[30] 9.50%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost 0 [14],[17],[31] 0 [29],[30]    
Fair value $ 0 [14],[17],[31] $ 0 [29],[30] $ 0 257
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 12.50%    
Principal $ 2,400 $ 2,400    
Cost 2,400 2,400    
Fair value $ 2,284 $ 2,284 $ 0 9,717
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate     12.50%  
Fair value     $ 2,284 0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 14.34% [5],[14],[17] 14.34% [6],[28],[29]    
Reference Rate and Spread 9.50% [5],[14],[17] 9.50% [6],[28],[29]    
PIK Rate 14.34% [5],[14],[17] 2.00% [6],[28],[29]    
Principal $ 357 [5],[14],[17] $ 320 [6],[28],[29]    
Cost 357 [5],[14],[17] 319 [6],[28],[29]    
Fair value $ 328 [5],[14],[17] $ 311 [6],[28],[29]    
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.34% [5],[14],[17] 14.34% [6],[28],[29]    
Reference Rate and Spread 9.50% [5],[14],[17] 9.50% [6],[28],[29]    
PIK Rate 14.34% [5],[14],[17] 2.00% [6],[28],[29]    
Principal $ 3,617 [5],[14],[17] $ 3,277 [6],[28],[29]    
Cost 3,613 [5],[14],[17] 3,262 [6],[28],[29]    
Fair value $ 3,321 [5],[14],[17] $ 3,186 [6],[28],[29]    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.50% [5],[14],[17],[31] 6.50% [6],[28],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[28],[29],[30]    
Cost (52) [5],[14],[17],[31] (62) [6],[28],[29],[30]    
Fair value $ (52) [5],[14],[17],[31] $ (62) [6],[28],[29],[30]    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.50% [5],[14],[17],[31] 6.50% [6],[28],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[28],[29],[30]    
Cost (52) [5],[14],[17],[31] (62) [6],[28],[29],[30]    
Fair value $ (52) [5],[14],[17],[31] $ (62) [6],[28],[29],[30]    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.82% [5],[14],[17] 10.62% [6],[28],[29]    
Reference Rate and Spread 6.50% [5],[14],[17] 6.50% [6],[28],[29]    
Principal $ 16,664 [5],[14],[17] $ 16,791 [6],[28],[29]    
Cost 16,409 [5],[14],[17] 16,483 [6],[28],[29]    
Fair value $ 16,664 [5],[14],[17] $ 16,791 [6],[28],[29]    
Investment, Identifier [Axis]: HOWLCO LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.42% [8],[11],[13],[14],[17] 10.69% [10],[12],[18],[29]    
Reference Rate and Spread 6.00% [8],[11],[13],[14],[17] 6.00% [10],[12],[18],[29]    
Principal $ 25,162 [8],[11],[13],[14],[17] $ 25,290 [10],[12],[18],[29]    
Cost 25,162 [8],[11],[13],[14],[17] 25,290 [10],[12],[18],[29]    
Fair value 24,397 [8],[11],[13],[14],[17] 24,381 [10],[12],[18],[29]    
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, L.P.)        
Schedule of Investments [Line Items]        
Fair value 1,400 1,400    
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, LP)        
Schedule of Investments [Line Items]        
Fair value     1,400 0
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)        
Schedule of Investments [Line Items]        
Fair value 4,106 4,331 4,331 4,712
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 4, L.P.)        
Schedule of Investments [Line Items]        
Fair value $ 2,796 $ 2,332 1,896 0
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 HPP-MS, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 49.26% [7],[8],[44] 49.26% [9],[10],[45]    
Cost $ 248 [7],[8],[44] $ 248 [9],[10],[45]    
Fair value $ 315 [7],[8],[44] $ 248 [9],[10],[45]    
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 MH, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 49.26% [7],[8],[33],[44] 49.26% [9],[10],[45]    
Cost $ 3,345 [7],[8],[33],[44] $ 3,895 [9],[10],[45]    
Fair value $ 5,896 [7],[8],[33],[44] $ 7,552 [9],[10],[45]    
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) [7],[8],[33],[44] 22.93%      
Cost [7],[8],[33],[44] $ 1,400      
Fair value [7],[8],[33],[44] $ 1,400      
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, LP)        
Schedule of Investments [Line Items]        
Units (percentage) [9],[10],[45]   22.93%    
Cost [9],[10],[45]   $ 1,400    
Fair value [9],[10],[45]   $ 1,400    
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 HAR, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) [7],[8],[44] 15.60%      
Cost [7],[8],[44] $ 750      
Fair value [7],[8],[44] $ 750      
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 3, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 8.22% [7],[8],[33],[44] 8.22% [9],[10],[45]    
Cost $ 2,050 [7],[8],[33],[44] $ 2,558 [9],[10],[45]    
Fair value $ 4,106 [7],[8],[33],[44] $ 4,331 [9],[10],[45]    
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 4, L.P.)        
Schedule of Investments [Line Items]        
Units (percentage) 9.29% [7],[8],[44] 8.71% [9],[10],[45]    
Cost $ 2,796 [7],[8],[44] $ 2,332 [9],[10],[45]    
Fair value $ 2,796 [7],[8],[44] $ 2,332 [9],[10],[45]    
Investment, Identifier [Axis]: Harrison Hydra-Gen, Ltd., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 107,456 107,456    
Cost $ 718 $ 718    
Fair value $ 4,270 $ 3,280 3,280 3,530
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 226 [33] 226 [32]    
Cost $ 2,850 [33] $ 2,850 [32]    
Fair value $ 17,460 [33] $ 17,460 [32] 19,080 14,680
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 226 [40] 226 [41]    
Cost $ 150 [40] $ 150 [41]    
Fair value $ 920 [40] $ 920 [41] $ 1,000 770
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.65% [14],[17] 10.13% [29] 8.38%  
Reference Rate and Spread 6.00% [14],[17] 6.00% [29] 6.00%  
Principal $ 1,799 [14],[17] $ 3,185 [29]    
Cost 1,797 [14],[17] 3,183 [29]    
Fair value $ 1,799 [14],[17] $ 3,185 [29] $ 3,182 2,585
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 9.00% 8.00%  
Principal $ 45,256 $ 37,800    
Cost 45,131 37,685    
Fair value $ 45,256 $ 37,800 $ 37,800 34,800
Investment, Identifier [Axis]: Heartland Dental, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6],[29]   10.88%    
Reference Rate and Spread [6],[29]   6.50%    
Principal [6],[29]   $ 14,663    
Cost [6],[29]   14,430    
Fair value [6],[29]   $ 13,599    
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 322,297 [33] 322,297    
Cost $ 2,352 [33] $ 2,352    
Fair value $ 3,640 [33] $ 2,400 $ 2,220 3,210
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Unsecured Convertible Debt        
Schedule of Investments [Line Items]        
Total Rate 8.00% 8.00% 8.00%  
Principal $ 3,000 $ 3,000    
Cost 3,000 3,000    
Fair value $ 2,880 $ 3,000 $ 2,750 2,960
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.76% [5],[14],[17] 12.07% [6],[28]    
Reference Rate and Spread 8.25% [5],[14],[17] 8.25% [6],[28]    
PIK Rate [5],[14],[17] 2.00%      
Principal $ 7,132 [5],[14],[17] $ 7,088 [6],[28]    
Cost 7,007 [5],[14],[17] 6,986 [6],[28]    
Fair value $ 5,893 [5],[14],[17] $ 6,144 [6],[28]    
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)        
Schedule of Investments [Line Items]        
Fair value     $ 12,507 14,387
Diluted, percentage     20.00%  
Profits, percentage     21.75%  
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)        
Schedule of Investments [Line Items]        
Units (percentage) 20.00% [7],[8],[33] 20.00% [9],[10],[32]    
Cost $ 20,200 [7],[8],[33] $ 19,000 [9],[10],[32]    
Fair value $ 13,217 [7],[8],[33] $ 11,758 [9],[10],[32]    
Diluted, percentage 20.00% [7],[8] 20.00% [9],[10]    
Profits, percentage 21.75% [7],[8] 21.75% [9],[10]    
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)        
Schedule of Investments [Line Items]        
Fair value $ 13,217 $ 11,758    
Diluted, percentage 20.00%      
Profits, percentage 21.75%      
Investment, Identifier [Axis]: IG Investor, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 14,400      
Cost $ 14,400      
Fair value 14,400 0    
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [31] 0      
Cost [31] (37)      
Fair value $ (37) [31] 0    
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 37,704      
Cost 37,352      
Fair value $ 37,352 $ 0    
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[28],[29],[59]   10.17%    
Reference Rate and Spread 5.75% [11],[14],[17],[31] 5.75% [12],[28],[29],[59]    
Principal $ 0 [11],[14],[17],[31] $ 698 [12],[28],[29],[59]    
Cost (22) [11],[14],[17],[31] 670 [12],[28],[29],[59]    
Fair value $ 0 [11],[14],[17],[31] $ 698 [12],[28],[29],[59]    
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.17% [11],[14],[17] 10.17% [12],[28],[29]    
Reference Rate and Spread 5.75% [11],[14],[17] 5.75% [12],[28],[29]    
Principal $ 9,423 [11],[14],[17] $ 14,499 [12],[28],[29]    
Cost 9,313 [11],[14],[17] 14,304 [12],[28],[29]    
Fair value $ 9,423 [11],[14],[17] $ 14,499 [12],[28],[29]    
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [11],[14],[17] 11.17%      
Reference Rate and Spread [11],[14],[17] 5.75%      
Principal [11],[14],[17] $ 4,966      
Cost [11],[14],[17] 4,908      
Fair value [11],[14],[17] $ 4,966      
Investment, Identifier [Axis]: INW Manufacturing, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.40% [11],[14],[17] 10.48% [12],[29]    
Reference Rate and Spread 5.75% [11],[14],[17] 5.75% [12],[29]    
Principal $ 6,750 [11],[14],[17] $ 7,125 [12],[29]    
Cost 6,628 [11],[14],[17] 6,968 [12],[29]    
Fair value $ 5,310 [11],[14],[17] 6,092 [12],[29]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread [17],[31] 9.00%      
PIK Rate [17],[31] 2.00%      
Principal [17],[31] $ 0      
Cost [17],[31] (11)      
Fair value $ (11) [17],[31] 0    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Reference Rate and Spread [17],[31] 9.00%      
PIK Rate [17],[31] 2.00%      
Principal [17],[31] $ 0      
Cost [17],[31] (9)      
Fair value $ (9) [17],[31] 0    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [17] 15.40%      
Reference Rate and Spread [17] 8.00%      
PIK Rate [17] 2.00%      
Principal [17] $ 4,340      
Cost [17] 3,341      
Fair value $ 3,341 [17] 0    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [17] 17.40%      
Reference Rate and Spread [17] 10.00%      
PIK Rate [17] 2.00%      
Principal [17] $ 4,340      
Cost [17] 3,341      
Fair value $ 3,341 [17] 0    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [26] 193,307      
Cost [26] $ 2,091      
Fair value $ 2,091 [26] $ 0    
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5] 849      
Cost [5] $ 1,166      
Fair value [5] $ 1,166      
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.43%      
Reference Rate and Spread [5],[14],[17] 7.00%      
Principal [5],[14],[17] $ 1,977      
Cost [5],[14],[17] 1,891      
Fair value [5],[14],[17] $ 1,957      
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.45%      
Reference Rate and Spread [5],[14],[17] 7.00%      
Principal [5],[14],[17] $ 20,820      
Cost [5],[14],[17] 20,237      
Fair value [5],[14],[17] $ 20,611      
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.30% [5],[14],[17] 13.98% [6],[29]    
Reference Rate and Spread 7.75% [5],[14],[17] 7.75% [6],[29]    
PIK Rate 1.00% [5],[14],[17] 1.50% [6],[29]    
Principal $ 18,644 [5],[14],[17] $ 18,515 [6],[29]    
Cost 18,579 [5],[14],[17] 18,384 [6],[29]    
Fair value $ 17,161 [5],[14],[17] 17,464 [6],[29]    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5] 18,006,407      
Cost [5] $ 18,300      
Fair value $ 17,510 [5] $ 0    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [6]   1,558,333    
Cost [6]   $ 1,558    
Fair value [6]   $ 0    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 1        
Schedule of Investments [Line Items]        
Total Rate [6]   6.00%    
PIK Rate [6]   6.00%    
Cost [6]   $ 3,235    
Fair value [6]   0    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 2        
Schedule of Investments [Line Items]        
Cost [6]   0    
Fair value [6]   $ 0    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[29],[60]   13.00%    
Reference Rate and Spread [6],[29],[60]   5.50%    
PIK Rate [6],[29],[60]   13.00%    
Principal [6],[29],[60]   $ 7,027    
Cost [6],[29],[60]   7,027    
Fair value [6],[29],[60]   $ 7,027    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [6],[34]   6.00%    
PIK Rate [6],[34]   6.00%    
Principal [6],[34]   $ 18,428    
Cost [6],[34]   17,664    
Fair value [6],[34]   $ 7,633    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [6],[28]   14.42%    
Reference Rate and Spread [6],[28]   10.00%    
PIK Rate [6],[28]   14.42%    
Principal [6],[28]   $ 806    
Cost [6],[28]   769    
Fair value [6],[28]   $ 769    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [6],[30],[61]   242,914    
Cost [6],[30],[61]   $ 0    
Fair value [6],[30],[61]   $ 0    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 900 [5],[40] 900 [6],[41]    
Cost $ 900 [5],[40] $ 900 [6],[41]    
Fair value $ 620 [5],[40] $ 600 [6],[41]    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 144 [5],[33],[40] 144 [6],[32],[41]    
Total Rate 10.00% [5],[33],[40] 10.00% [6],[32],[41]    
PIK Rate 10.00% [5],[33],[40] 10.00% [6],[32],[41]    
Cost $ 135 [5],[33],[40] $ 129 [6],[32],[41]    
Fair value $ 157 [5],[33],[40] $ 145 [6],[32],[41]    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 80 [5],[33],[40] 80 [6],[32],[41]    
Total Rate 20.00% [5],[33],[40] 20.00% [6],[32],[41]    
PIK Rate 20.00% [5],[33],[40] 20.00% [6],[32],[41]    
Cost $ 100 [5],[33],[40] $ 92 [6],[32],[41]    
Fair value $ 104 [5],[33],[40] $ 93 [6],[32],[41]    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.35% [5],[14],[17],[62] 11.50% [6],[29]    
Reference Rate and Spread 6.75% [5],[14],[17],[62] 6.75% [6],[29]    
Principal $ 1,004 [5],[14],[17],[62] $ 463 [6],[29]    
Cost 978 [5],[14],[17],[62] 430 [6],[29]    
Fair value $ 1,004 [5],[14],[17],[62] $ 463 [6],[29]    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.18% [5],[14],[17] 11.50% [6],[29]    
Reference Rate and Spread 6.75% [5],[14],[17] 6.75% [6],[29]    
Principal $ 19,093 [5],[14],[17] $ 19,239 [6],[29]    
Cost 18,870 [5],[14],[17] 18,956 [6],[29]    
Fair value $ 19,093 [5],[14],[17] 19,239 [6],[29]    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 80,000      
Cost $ 4,000      
Fair value $ 4,000 0    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 17,775      
Cost 17,618      
Fair value $ 17,618 $ 0    
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.17%      
Reference Rate and Spread 5.75% [5],[14],[17] 5.50% [6],[29],[30]    
Principal $ 1,508 [5],[14],[17] $ 0 [6],[29],[30]    
Cost 1,480 [5],[14],[17] (19) [6],[29],[30]    
Fair value $ 1,508 [5],[14],[17] $ (19) [6],[29],[30]    
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.17% [5],[14],[17] 10.23% [6],[29]    
Reference Rate and Spread 5.75% [5],[14],[17] 5.50% [6],[29]    
Principal $ 8,528 [5],[14],[17] $ 8,593 [6],[29]    
Cost 8,423 [5],[14],[17] 8,461 [6],[29]    
Fair value $ 8,528 [5],[14],[17] 8,593 [6],[29]    
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5] 131,100      
Cost [5] $ 656      
Fair value [5] $ 656      
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread [5],[14],[31] 6.25%      
Principal [5],[14],[31] $ 0      
Cost [5],[14],[31] (73)      
Fair value [5],[14],[31] $ (73)      
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Reference Rate and Spread [5],[14],[31] 6.25%      
Principal [5],[14],[31] $ 0      
Cost [5],[14],[31] (59)      
Fair value [5],[14],[31] $ (59)      
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.57%      
Reference Rate and Spread [5],[14],[17] 6.25%      
Principal [5],[14],[17] $ 14,406      
Cost [5],[14],[17] 13,992      
Fair value [5],[14],[17] $ 13,992      
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5] 131,569      
Cost [5] $ 417      
Fair value [5] $ 417      
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.49%      
Reference Rate and Spread [5],[14],[17] 8.00%      
Principal [5],[14],[17] $ 622      
Cost [5],[14],[17] 601      
Fair value [5],[14],[17] $ 616      
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.40%      
Reference Rate and Spread [5],[14],[17] 8.00%      
Principal [5],[14],[17] $ 7,326      
Cost [5],[14],[17] 7,154      
Fair value [5],[14],[17] $ 7,252      
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.40%      
Reference Rate and Spread [5],[14],[17] 8.00%      
Principal [5],[14],[17] $ 2,947      
Cost [5],[14],[17] 2,883      
Fair value [5],[14],[17] $ 2,917      
Investment, Identifier [Axis]: Integral Energy Services, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [5] 9,968      
Cost [5] $ 1,356      
Fair value $ 290 [5] 1,280    
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.01%      
Reference Rate and Spread [5],[14],[17] 7.50%      
Principal [5],[14],[17] $ 15,769      
Cost [5],[14],[17] 15,576      
Fair value $ 15,069 [5],[14],[17] $ 15,769    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 2,143 [5] 2,143 [6]    
Cost $ 0 [5] $ 0 [6]    
Fair value $ 0 [5] $ 0 [6]    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.51% [5],[15],[17],[63] 14.22% [6],[64]    
Reference Rate and Spread 10.00% [5],[15],[17],[63] 10.00% [6],[64]    
PIK Rate [5],[15],[17],[63] 15.51%      
Principal $ 1,835 [5],[15],[17],[63] $ 1,682 [6],[64]    
Cost 1,835 [5],[15],[17],[63] 1,682 [6],[64]    
Fair value $ 1,781 [5],[15],[17],[63] $ 1,682 [6],[64]    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.43% [5],[14],[15],[16],[17] 12.07% [6],[29],[34]    
Reference Rate and Spread 7.00% [5],[14],[15],[16],[17] 7.00% [6],[29],[34]    
PIK Rate 12.43% [5],[14],[15],[16],[17] 1.00% [6],[29],[34]    
Principal $ 7,313 [5],[14],[15],[16],[17] $ 7,313 [6],[29],[34]    
Cost 7,237 [5],[14],[15],[16],[17] 7,237 [6],[29],[34]    
Fair value $ 535 [5],[14],[15],[16],[17] $ 1,082 [6],[29],[34]    
Investment, Identifier [Axis]: Intermedia Holdings, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.43% [11],[14],[17] 10.38% [12],[29]    
Reference Rate and Spread 6.00% [11],[14],[17] 6.00% [12],[29]    
Principal $ 20,254 [11],[14],[17] $ 20,467 [12],[29]    
Cost 20,220 [11],[14],[17] 20,418 [12],[29]    
Fair value $ 19,318 [11],[14],[17] $ 15,811 [12],[29]    
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.15% [5],[14] 10.14% [6],[29]    
Reference Rate and Spread 6.50% [5],[14] 6.50% [6],[29]    
Principal $ 311 [5],[14] $ 622 [6],[29]    
Cost 308 [5],[14] 618 [6],[29]    
Fair value $ 302 [5],[14] $ 622 [6],[29]    
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.15% [5],[14] 10.17% [6],[29]    
Reference Rate and Spread 6.50% [5],[14] 6.50% [6],[29]    
Principal $ 16,889 [5],[14] $ 16,889 [6],[29]    
Cost 16,814 [5],[14] 16,784 [6],[29]    
Fair value $ 16,373 [5],[14] $ 16,889 [6],[29]    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 203,016 179,778    
Cost $ 2,756 $ 1,798    
Fair value $ 2,830 $ 1,798 $ 1,798 1,798
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.50% 12.50% 12.50%  
Principal $ 4,514 $ 4,534    
Cost 4,485 4,500    
Fair value $ 4,485 $ 4,500 $ 4,564 4,557
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% 12.50% 12.50%  
Principal $ 3,140 $ 3,154    
Cost 3,120 3,130    
Fair value $ 3,120 $ 3,130 $ 3,174 3,170
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.50% 12.50% 12.50%  
Principal $ 8,944 $ 8,944    
Cost 8,944 8,944    
Fair value $ 8,944 $ 8,944 $ 8,944 8,944
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 13.50% 12.50% 12.50%  
Principal $ 19,624 $ 19,712    
Cost 19,496 19,559    
Fair value $ 19,496 19,559 $ 19,835 19,805
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 13.50%      
Principal $ 10,762      
Cost 10,449      
Fair value $ 10,449 $ 0    
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [11] 186,322      
Cost [11] $ 0      
Fair value [11] $ 0      
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.59% [11],[14],[17] 9.93% [12],[29],[34]    
Reference Rate and Spread 5.50% [11],[14],[17] 7.75% [12],[29],[34]    
PIK Rate [11],[14],[17] 8.09%      
Principal $ 2,560 [11],[14],[17] $ 5,053 [12],[29],[34]    
Cost 2,305 [11],[14],[17] 5,038 [12],[29],[34]    
Fair value $ 2,304 [11],[14],[17] $ 1,537 [12],[29],[34]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,684,211 [5] 1,684,211 [6]    
Cost $ 1,684 [5] $ 1,684 [6]    
Fair value $ 2,230 [5] $ 2,840 [6]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.59%      
Reference Rate and Spread 6.00% [5],[14],[17] 6.00% [6],[29],[30]    
Principal $ 1,684 [5],[14],[17] $ 0 [6],[29],[30]    
Cost 1,575 [5],[14],[17] (135) [6],[29],[30]    
Fair value $ 1,684 [5],[14],[17] $ (135) [6],[29],[30]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.66% [5],[14],[17] 10.73% [6],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.00% [6],[29]    
Principal $ 36,237 [5],[14],[17] $ 36,947 [6],[29]    
Cost 35,763 [5],[14],[17] 36,358 [6],[29]    
Fair value $ 36,237 [5],[14],[17] $ 36,947 [6],[29]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,826,667 [5] 2,826,667 [6],[32]    
Total Rate [6],[32]   12.00%    
PIK Rate [6],[32]   12.00%    
Cost $ 110 [5] $ 123 [6],[32]    
Fair value $ 500 [5] $ 623 [6],[32]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.45% [5],[14],[17] 12.23% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[17] 7.50% [6],[29]    
Principal $ 846 [5],[14],[17] $ 500 [6],[29]    
Cost 830 [5],[14],[17] 483 [6],[29]    
Fair value $ 842 [5],[14],[17] $ 500 [6],[29]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.43% [5],[14],[17] 12.23% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[17] 7.50% [6],[29]    
Principal $ 2,000 [5],[14],[17] $ 2,079 [6],[29]    
Cost 2,000 [5],[14],[17] 2,079 [6],[29]    
Fair value $ 2,000 [5],[14],[17] $ 2,079 [6],[29]    
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 627 [33] 627 [29]    
Cost $ 811 [33] $ 811 [29]    
Fair value $ 12,420 [33] $ 14,970 [29] $ 14,970 12,420
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate     12.25%  
Reference Rate and Spread     6.75%  
Fair value     $ 2,450 2,550
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.75% [31] 6.75% [30]    
Principal $ 0 [31] $ 0 [30]    
Cost 0 [31] 0 [30]    
Fair value $ 0 [31] $ 0 [30]    
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.25% [14] 13.75% [29]    
Reference Rate and Spread 6.75% [14] 6.75% [29]    
Principal $ 2,000 [14] $ 2,450 [29]    
Cost 2,000 [14] 2,444 [29]    
Fair value $ 2,000 [14] $ 2,450 [29]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 472,579 [11] 472,579 [12]    
Cost $ 4,429 [11] $ 4,429 [12]    
Fair value $ 0 [11] $ 0 [12]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 23.64% [11],[16],[17] 18.00% [12]    
Reference Rate and Spread [11],[16],[17] 18.00%      
PIK Rate [11],[16],[17] 23.64%      
Principal $ 2,431 [11],[16],[17] $ 2,297 [12]    
Cost 2,431 [11],[16],[17] 2,297 [12]    
Fair value $ 1,977 [11],[16],[17] $ 2,297 [12]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 21.48% [11],[16],[17] 19.75% [12],[34]    
Reference Rate and Spread [11],[16],[17] 16.00%      
PIK Rate 21.48% [11],[16],[17] 19.75% [12],[34]    
Principal $ 2,057 [11],[16],[17] $ 4,034 [12],[34]    
Cost 2,038 [11],[16],[17] 3,997 [12],[34]    
Fair value $ 143 [11],[16],[17] $ 504 [12],[34]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [11],[16],[17] 21.48%      
Reference Rate and Spread [11],[16],[17] 16.00%      
PIK Rate [11],[16],[17] 21.48%      
Principal [11],[16],[17] $ 1,978      
Cost [11],[16],[17] 1,959      
Fair value [11],[16],[17] $ 137      
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,150 [33] 3,150 [32]    
Cost $ 3,150 [33] $ 3,150 [32]    
Fair value $ 7,660 [33] $ 5,540 [32] $ 5,880 3,150
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     14.13%  
Reference Rate and Spread 11.50% [14],[17],[31] 11.50% [29],[30] 11.50%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost (11) [14],[17],[31] (14) [29],[30]    
Fair value $ 0 [14],[17],[31] $ 0 [29],[30] $ (15) (18)
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 16.98% [14],[17] 15.63% [29] 14.13%  
Reference Rate and Spread 11.50% [14],[17] 11.50% [29] 11.50%  
Principal $ 9,357 [14],[17] $ 9,999 [29]    
Cost 9,298 [14],[17] 9,920 [29]    
Fair value $ 9,357 [14],[17] $ 9,999 [29] $ 9,999 11,362
Investment, Identifier [Axis]: JorVet Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Fair value     $ 10,741 0
Investment, Identifier [Axis]: JorVet Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 107,406 [33] 107,406 [32]    
Cost $ 10,741 [33] $ 10,741 [32]    
Fair value $ 10,741 [33] $ 10,741 [32]    
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 25,650 $ 25,650    
Cost 25,470 25,432    
Fair value $ 25,470 $ 25,432 $ 25,419 0
Investment, Identifier [Axis]: KBK Industries, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 325 [33] 325 [32]    
Cost $ 783 [33] $ 783 [32]    
Fair value $ 18,370 [33] 15,570 [32] 14,390 13,620
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 9.00%      
Principal $ 5,100      
Cost 5,056      
Fair value $ 5,100 $ 0    
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.75% [5],[14] 12.00% [6],[29]    
Reference Rate and Spread 7.25% [5],[14] 7.25% [6],[29]    
Principal $ 1,037 [5],[14] $ 1,064 [6],[29]    
Cost 1,001 [5],[14] 1,019 [6],[29]    
Fair value $ 943 [5],[14] $ 995 [6],[29]    
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.75% [5],[14] 12.00% [6],[29]    
Reference Rate and Spread 7.25% [5],[14] 7.25% [6],[29]    
Principal $ 7,467 [5],[14] $ 7,505 [6],[29]    
Cost 7,376 [5],[14] 7,391 [6],[29]    
Fair value $ 6,793 [5],[14] $ 7,022 [6],[29]    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 800 [33],[40] 800 [32],[41]    
Cost $ 992 [33],[40] $ 992 [32],[41]    
Fair value $ 2,860 [33],[40] $ 2,850 [32],[41]    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 1        
Schedule of Investments [Line Items]        
Fair value     9,250 12,310
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 2        
Schedule of Investments [Line Items]        
Fair value     $ 2,460 2,460
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 581 581    
Cost $ 12,240 $ 12,240    
Fair value $ 8,830 $ 7,220    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% 11.50% 11.50%  
Principal $ 19,799 $ 20,415    
Cost 19,772 20,374    
Fair value $ 19,772 $ 20,374 $ 20,361 20,324
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% 9.00% 9.00%  
Principal $ 3,850 $ 3,879    
Cost 3,814 3,842    
Fair value $ 3,814 $ 3,842 $ 3,851 3,876
Investment, Identifier [Axis]: Kore Wireless Group Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.99% [11],[17] 10.08% [12],[28]    
Reference Rate and Spread 5.50% [11],[17] 5.50% [12],[28]    
Principal $ 11,209 [11],[17] $ 11,326 [12],[28]    
Cost 11,183 [11],[17] 11,280 [12],[28]    
Fair value $ 10,564 [11],[17] $ 10,930 [12],[28]    
Investment, Identifier [Axis]: L.F. Manufacturing Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Fair value     0 2,560
Investment, Identifier [Axis]: L.F. Manufacturing Holdings, LLC, Preferred Member Units (non-voting)        
Schedule of Investments [Line Items]        
Fair value     0 107
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P., LP Interests        
Schedule of Investments [Line Items]        
Units (percentage) 2.27% [7],[8],[33],[44] 2.27% [9],[10],[32],[45]    
Cost $ 1,746 [7],[8],[33],[44] $ 1,746 [9],[10],[32],[45]    
Fair value $ 3,354 [7],[8],[33],[44] $ 3,197 [9],[10],[32],[45]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.67% [5],[14],[17] 11.21% [6],[28],[29]    
Reference Rate and Spread 7.25% [5],[14],[17] 7.25% [6],[28],[29]    
Principal $ 7,960 [5],[14],[17] $ 8,106 [6],[28],[29]    
Cost 7,933 [5],[14],[17] 8,087 [6],[28],[29]    
Fair value $ 7,960 [5],[14],[17] $ 8,047 [6],[28],[29]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.67% [5],[14],[17] 11.67% [6],[28],[29]    
Reference Rate and Spread 7.25% [5],[14],[17] 7.25% [6],[28],[29]    
Principal $ 5,246 [5],[14],[17] $ 9,197 [6],[28],[29]    
Cost 5,226 [5],[14],[17] 9,160 [6],[28],[29]    
Fair value $ 5,246 [5],[14],[17] $ 9,130 [6],[28],[29]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.67% [5],[14],[17] 11.67% [6],[28],[29]    
Reference Rate and Spread 7.25% [5],[14],[17] 7.25% [6],[28],[29]    
Principal $ 2,803 [5],[14],[17] $ 10,827 [6],[28],[29]    
Cost 2,793 [5],[14],[17] 10,733 [6],[28],[29]    
Fair value $ 2,803 [5],[14],[17] $ 10,749 [6],[28],[29]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.67%      
Reference Rate and Spread [5],[14],[17] 7.25%      
Principal [5],[14],[17] $ 1,056      
Cost [5],[14],[17] 1,052      
Fair value [5],[14],[17] $ 1,056      
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.67%      
Reference Rate and Spread [5],[14],[17] 7.25%      
Principal [5],[14],[17] $ 10,694      
Cost [5],[14],[17] 10,645      
Fair value [5],[14],[17] $ 10,694      
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.40% [5],[14],[17] 12.74% [6],[29]    
Reference Rate and Spread 9.00% [5],[14],[17] 9.00% [6],[29]    
PIK Rate [5],[14],[17] 1.00%      
Principal $ 4,427 [5],[14],[17] $ 4,444 [6],[29]    
Cost 4,329 [5],[14],[17] 4,370 [6],[29]    
Fair value $ 3,970 [5],[14],[17] $ 4,350 [6],[29]    
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.65% [11],[17] 9.73% [12]    
Reference Rate and Spread 5.00% [11],[17] 5.00% [12]    
Principal $ 14,363 [11],[17] $ 14,475 [12]    
Cost 14,265 [11],[17] 14,349 [12]    
Fair value $ 13,932 [11],[17] $ 13,968 [12]    
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.48% [5],[14] 10.13% [6],[29]    
Reference Rate and Spread 5.75% [5],[14] 5.75% [6],[29]    
Principal $ 23,921 [5],[14] $ 19,662 [6],[29]    
Cost 22,873 [5],[14] 19,033 [6],[29]    
Fair value $ 19,166 [5],[14] $ 16,221 [6],[29]    
Investment, Identifier [Axis]: Looking Glass Investments, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3 [7],[8] 3 [9],[10]    
Cost $ 125 [7],[8] $ 125 [9],[10]    
Fair value $ 25 [7],[8] $ 25 [9],[10]    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.42% [11],[14],[17] 10.42% [12],[28],[29]    
Reference Rate and Spread 6.00% [11],[14],[17] 6.00% [12],[28],[29]    
Principal $ 2,811 [11],[14],[17] $ 8,338 [12],[28],[29]    
Cost 2,790 [11],[14],[17] 8,267 [12],[28],[29]    
Fair value $ 2,811 [11],[14],[17] $ 8,338 [12],[28],[29]    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.42% [11],[14],[17] 10.42% [12],[28],[29]    
Reference Rate and Spread 6.00% [11],[14],[17] 6.00% [12],[28],[29]    
Principal $ 3,945 [11],[14],[17] $ 7,876 [12],[28],[29]    
Cost 3,917 [11],[14],[17] 7,784 [12],[28],[29]    
Fair value $ 3,945 [11],[14],[17] $ 7,876 [12],[28],[29]    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [11],[14],[17] 11.42%      
Reference Rate and Spread [11],[14],[17] 6.00%      
Principal [11],[14],[17] $ 3,472      
Cost [11],[14],[17] 3,447      
Fair value [11],[14],[17] $ 3,472      
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [11],[14],[17] 11.42%      
Reference Rate and Spread [11],[14],[17] 6.00%      
Principal [11],[14],[17] $ 7,816      
Cost [11],[14],[17] 7,741      
Fair value [11],[14],[17] $ 7,816      
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 66,000 66,000    
Cost $ 4,400 $ 4,400    
Fair value $ 330 $ 0 0 0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 4,000 4,000    
Cost $ 6,000 $ 6,000    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% [15] 13.00% 13.00%  
Principal $ 5,480 [15] $ 6,156    
Cost 5,480 [15] 6,156    
Fair value $ 5,102 [15] $ 4,548 $ 2,709 5,934
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests        
Schedule of Investments [Line Items]        
Units (percentage) 14.51% [7],[8],[33],[44] 14.51% [9],[10],[32],[45]    
Cost $ 14,250 [7],[8],[33],[44] $ 14,250 [9],[10],[32],[45]    
Fair value 14,527 [7],[8],[33],[44] 14,833 [9],[10],[32],[45]    
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt        
Schedule of Investments [Line Items]        
Principal 0 [7],[8],[31] 0 [9],[10],[30]    
Cost 0 [7],[8],[31] 0 [9],[10],[30]    
Fair value 0 [7],[8],[31] 0 [9],[10],[30]    
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value 0 0    
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Interests        
Schedule of Investments [Line Items]        
Units (percentage) [7],[8],[44] 11.96%      
Cost [7],[8],[44] $ 1,152      
Fair value [7],[8],[44] 1,152      
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests        
Schedule of Investments [Line Items]        
Fair value $ 1,152 0    
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [7],[8],[14],[17] 8.88%      
Reference Rate and Spread [7],[8],[14],[17] 3.50%      
Principal [7],[8],[14],[17] $ 11,000      
Cost [7],[8],[14],[17] 10,848      
Fair value $ 10,848 [7],[8],[14],[17] $ 0    
Investment, Identifier [Axis]: MS Private Loan Fund, LP Interests        
Schedule of Investments [Line Items]        
Fair value     14,351 2,581
Investment, Identifier [Axis]: MSC Adviser I, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32],[65]   1    
Units (percentage) [33] 100.00%      
Cost $ 29,500 [33] $ 29,500 [32],[65]    
Fair value $ 146,131 [33] $ 122,930 [32],[65] 112,490 140,400
Investment, Identifier [Axis]: MSC Income Fund, Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 814,379 [7],[8],[33] 94,697 [9],[10],[32]    
Cost $ 6,250 [7],[8],[33] $ 750 [9],[10],[32]    
Fair value $ 6,314 [7],[8],[33] $ 753 [9],[10],[32] 761 0
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.56% [5],[14] 11.79% [6],[29],[66]    
Reference Rate and Spread 7.25% [5],[14] 7.25% [6],[29],[66]    
Principal $ 730 [5],[14] $ 3,103 [6],[29],[66]    
Cost 699 [5],[14] 3,063 [6],[29],[66]    
Fair value $ 730 [5],[14] $ 3,083 [6],[29],[66]    
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.56% [5],[14],[17] 11.09% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[17] 7.25% [6],[29]    
Principal $ 15,147 [5],[14],[17] $ 15,324 [6],[29]    
Cost 14,995 [5],[14],[17] 15,122 [6],[29]    
Fair value 15,147 [5],[14],[17] $ 15,224 [6],[29]    
Investment, Identifier [Axis]: Market Force Information, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares)   743,921    
Cost   $ 16,642    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   15.13% [29] 13.38%  
Reference Rate and Spread 11.00% 11.00% [29] 11.00%  
Principal [29]   $ 6,275    
Cost [29]   6,253    
Fair value $ 0 $ 6,090 [29] $ 5,000 3,400
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   12.00% [34] 12.00%  
PIK Rate   12.00% [34] 12.00%  
Principal [34]   $ 26,079    
Cost [34]   25,952    
Fair value $ 0 $ 1,610 [34] $ 2,871 8,936
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares)   1,537,219    
Cost   $ 1,537    
Fair value   $ 1,537    
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [32]   5,915,585    
Total Rate [32]   8.00%    
PIK Rate [32]   8.00%    
Cost [32]   $ 6,010    
Fair value [32]   6,010    
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [30]   0    
Cost [30]   0    
Fair value [30]   $ 0    
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   12.75%    
Principal   $ 23,802    
Cost   23,576    
Fair value   23,576    
Investment, Identifier [Axis]: MetalForming Holding, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [33] 1,537,219      
Cost [33] $ 1,537      
Fair value [33] $ 1,400      
Investment, Identifier [Axis]: MetalForming Holding, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [33] 5,915,585      
Total Rate [33] 8.00%      
PIK Rate [33] 8.00%      
Cost [33] $ 6,127      
Fair value [33] 6,364      
Investment, Identifier [Axis]: MetalForming Holding, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [31] 0      
Cost [31] 0      
Fair value [31] $ 0      
Investment, Identifier [Axis]: MetalForming Holding, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.75%      
Principal $ 23,802      
Cost 23,611      
Fair value 23,611      
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Fair value $ 1,400 1,537    
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Total Rate 8.00%      
PIK Rate 8.00%      
Fair value $ 6,364 6,010    
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.75%      
Fair value $ 23,611 $ 23,576    
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.25% [5],[14],[17],[31] 6.25% [6],[28],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[28],[29],[30]    
Cost (54) [5],[14],[17],[31] (63) [6],[28],[29],[30]    
Fair value $ (54) [5],[14],[17],[31] $ (63) [6],[28],[29],[30]    
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.42% [5],[14],[17] 9.86% [6],[28],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.25% [6],[28],[29]    
Principal $ 23,413 [5],[14],[17] $ 26,075 [6],[28],[29]    
Cost 23,062 [5],[14],[17] 25,619 [6],[28],[29]    
Fair value $ 23,413 [5],[14],[17] $ 25,181 [6],[28],[29]    
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.02% [5],[14],[17] 10.66% [6],[29]    
Reference Rate and Spread 6.50% [5],[14],[17] 6.25% [6],[29]    
Principal $ 18,769 [5],[14],[17] $ 18,769 [6],[29]    
Cost 18,647 [5],[14],[17] 18,562 [6],[29]    
Fair value $ 17,991 [5],[14],[17] $ 18,338 [6],[29]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 44,445,814 [5],[8],[13] 44,445,814 [6],[10],[18]    
Cost $ 889 [5],[8],[13] $ 889 [6],[10],[18]    
Fair value $ 556 [5],[8],[13] $ 889 [6],[10],[18]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[8],[13] 14.00%      
Reference Rate and Spread [6],[10],[18],[29],[30]   7.00%    
Principal $ 3,709 [5],[8],[13] $ 0 [6],[10],[18],[29],[30]    
Cost 3,656 [5],[8],[13] (64) [6],[10],[18],[29],[30]    
Fair value $ 3,599 [5],[8],[13] $ (64) [6],[10],[18],[29],[30]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.00% [5],[8],[13] 11.73% [6],[10],[18],[29]    
Reference Rate and Spread [6],[10],[18],[29]   7.00%    
Principal $ 10,107 [5],[8],[13] $ 10,107 [6],[10],[18],[29]    
Cost 9,954 [5],[8],[13] 9,923 [6],[10],[18],[29]    
Fair value $ 10,587 [5],[8],[13] $ 10,714 [6],[10],[18],[29]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 14.00% [5],[8],[13] 11.73% [6],[10],[18],[29]    
Reference Rate and Spread [6],[10],[18],[29]   7.00%    
Principal $ 17,038 [5],[8],[13] $ 17,038 [6],[10],[18],[29]    
Cost 16,796 [5],[8],[13] 16,746 [6],[10],[18],[29]    
Fair value $ 17,038 [5],[8],[13] $ 17,038 [6],[10],[18],[29]    
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 5,873 [33] 5,873 [32]    
Cost $ 2,720 [33] $ 2,720 [32]    
Fair value 27,150 [33] 22,830 [32] $ 20,700 8,840
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     10.00%  
Principal 0 [31] 0 [30]    
Cost 0 [31] 0 [30]    
Fair value $ 0 [31] $ 0 [30] $ 0 0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 5,746 $ 5,746    
Cost 5,746 5,746    
Fair value $ 5,746 $ 5,746 $ 5,746 6,378
Investment, Identifier [Axis]: NAPCO Precast, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,955 2,955    
Cost $ 2,975 $ 2,975    
Fair value $ 12,160 $ 11,830 11,180 13,560
Investment, Identifier [Axis]: NBG Acquisition Inc, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.71% [11],[14],[16] 9.67% [12],[29]    
Reference Rate and Spread 5.50% [11],[14],[16] 5.50% [12],[29]    
Principal $ 3,849 [11],[14],[16] $ 3,849 [12],[29]    
Cost 3,834 [11],[14],[16] 3,834 [12],[29]    
Fair value $ 154 [11],[14],[16] $ 1,251 [12],[29]    
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [32]   65,962    
Cost [32]   $ 3,717    
Fair value [32]   4,790    
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [33] 65,962      
Cost [33] $ 114      
Fair value 90 [33]   4,615 6,200
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value $ 2,350 4,615    
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [33] 65,962      
Cost [33] $ 3,603      
Fair value 2,350 [33]   $ 175 240
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2.1        
Schedule of Investments [Line Items]        
Fair value $ 90 $ 175    
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 2,080 $ 2,080    
Cost 2,080 2,080    
Fair value $ 2,080 $ 2,080 $ 2,080 2,080
Investment, Identifier [Axis]: NTM Acquisition Corp., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.79% [11],[14],[17] 9.50% [12],[29]    
Reference Rate and Spread 7.25% [11],[14],[17] 6.25% [12],[29]    
PIK Rate 1.00% [11],[14],[17] 1.00% [12],[29]    
Principal $ 4,177 [11],[14],[17] $ 4,358 [12],[29]    
Cost 4,177 [11],[14],[17] 4,358 [12],[29]    
Fair value $ 4,010 [11],[14],[17] $ 4,228 [12],[29]    
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29],[54]   10.85%    
Reference Rate and Spread 9.00% [5],[14],[17],[31] 8.00% [6],[28],[29],[54]    
Principal $ 0 [5],[14],[17],[31] $ 3,941 [6],[28],[29],[54]    
Cost (112) [5],[14],[17],[31] 3,797 [6],[28],[29],[54]    
Fair value $ (97) [5],[14],[17],[31] $ 3,720 [6],[28],[29],[54]    
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.52% [5],[14],[17] 12.56% [6],[28],[29]    
Reference Rate and Spread 9.00% [5],[14],[17] 8.00% [6],[28],[29]    
PIK Rate [5],[14],[17] 1.00%      
Principal $ 39,404 [5],[14],[17] $ 39,851 [6],[28],[29]    
Cost 38,826 [5],[14],[17] 39,094 [6],[28],[29]    
Fair value $ 39,404 [5],[14],[17] $ 37,616 [6],[28],[29]    
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 20.00% [5] 20.00% [6]    
PIK Rate 20.00% [5] 20.00% [6]    
Principal $ 7,563 [5] $ 6,509 [6]    
Cost 7,314 [5] 6,194 [6]    
Fair value $ 7,563 [5] $ 6,194 [6]    
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 6,987 [33] 6,987    
Cost $ 6,987 [33] $ 6,987    
Fair value $ 14,430 [33] $ 7,700 $ 7,700 7,700
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00%   8.71%  
Reference Rate and Spread   7.00% [29],[30] 7.00%  
Principal $ 25,794 $ 0 [29],[30]    
Cost 25,658 0 [29],[30]    
Fair value $ 25,794 0 [29],[30] $ 0 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1.1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 7.00%      
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 10,500 $ 20,094    
Cost 10,451 19,972    
Fair value $ 10,500 20,094 $ 18,281 4,829
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2.1        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
Fair value $ 25,794 $ 20,094    
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal   $ 10,500    
Cost   10,434    
Fair value $ 10,500 $ 10,500 $ 10,500 10,412
Investment, Identifier [Axis]: NexRev LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 103,144,186 [33] 103,144,186 [32]    
Cost $ 8,213 [33] $ 8,213 [32]    
Fair value 6,350 [33] 1,110 [32] $ 1,110 2,690
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     11.00%  
Principal 0 [31] 0 [30]    
Cost 0 [31] 0 [30]    
Fair value $ 0 [31] $ 0 [30] $ 160 800
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 11.00% 11.00%  
Principal $ 9,811 $ 11,465    
Cost 9,738 11,335    
Fair value $ 9,738 $ 8,477 $ 9,053 13,245
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.25% [5],[14],[17],[31] 6.25% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (1) [5],[14],[17],[31] (1) [6],[29],[30]    
Fair value $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.25% [5],[14],[17],[31] 6.25% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (24) [5],[14],[17],[31] (38) [6],[29],[30]    
Fair value $ (24) [5],[14],[17],[31] $ (38) [6],[29],[30]    
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.40% [5],[14],[17] 9.99% [6],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.25% [6],[29]    
Principal $ 20,467 [5],[14],[17] $ 21,666 [6],[29]    
Cost 20,320 [5],[14],[17] 21,418 [6],[29]    
Fair value $ 20,467 [5],[14],[17] $ 21,666 [6],[29]    
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Fair value     $ 10,200 13,500
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 406 406    
Cost $ 10,200 $ 10,200    
Fair value $ 9,240 $ 8,040    
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 2,062 2,062    
Cost $ 2,062 $ 2,062    
Fair value $ 5,150 $ 5,150    
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.98% [14],[17] 10.63% [29] 9.13%  
Reference Rate and Spread 6.50% [14],[17] 6.50% [29] 6.50%  
Principal $ 3,600 [14],[17] $ 4,400 [29]    
Cost 3,599 [14],[17] 4,399 [29]    
Fair value $ 3,599 [14],[17] $ 4,399 [29] $ 4,399 1,720
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 18,440 $ 18,440    
Cost 18,423 18,414    
Fair value $ 18,423 $ 18,414 $ 18,411 17,240
Investment, Identifier [Axis]: OMi Topco, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 900 [33] 900 [32]    
Cost $ 1,080 [33] $ 1,080 [32]    
Fair value $ 32,630 [33] $ 22,810 [32] $ 20,680 20,210
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 13,500 $ 15,750    
Cost 13,421 15,634    
Fair value $ 13,500 $ 15,750 $ 16,250 18,000
Investment, Identifier [Axis]: OVG Business Services, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6],[29]   10.64%    
Reference Rate and Spread [6],[29]   6.25%    
Principal [6],[29]   $ 13,930    
Cost [6],[29]   13,813    
Fair value [6],[29]   $ 13,094    
Investment, Identifier [Axis]: Obra Capital, Inc, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [11],[17] 11.43%      
Reference Rate and Spread [11],[17] 6.00%      
Principal [11],[17] $ 17,801      
Cost [11],[17] 16,912      
Fair value [11],[17] $ 14,775      
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 635 635    
Cost $ 830 $ 830    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 912 912    
Total Rate 7.00% 7.00% 7.00%  
PIK Rate 7.00% 7.00% 7.00%  
Cost $ 1,981 $ 1,981    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [16] 12.00% [34] 12.00%  
PIK Rate 12.00% [16] 12.00% [34] 12.00%  
Principal $ 964 [16] $ 964 [34]    
Cost 964 [16] 964 [34]    
Fair value $ 372 [16] $ 569 [34] $ 690 935
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [16] 12.00% [34] 12.00%  
PIK Rate 12.00% [16] 12.00% [34] 12.00%  
Principal $ 983 [16] $ 983 [34]    
Cost 983 [16] 983 [34]    
Fair value $ 380 [16] $ 580 [34] $ 703 954
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% [16] 12.00% [34] 12.00%  
PIK Rate 12.00% [16] 12.00% [34] 12.00%  
Principal $ 2,116 [16] $ 2,116 [34]    
Cost 2,116 [16] 2,116 [34]    
Fair value $ 818 [16] $ 1,249 [34] $ 1,515 2,055
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.00% [16] 12.00% [34] 12.00%  
PIK Rate 12.00% [16] 12.00% [34] 12.00%  
Principal $ 4,415 [16] $ 4,415 [34]    
Cost 4,415 [16] 4,415 [34]    
Fair value $ 1,706 [16] $ 2,606 [34] $ 3,160 4,285
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% [16] 10.00% [34] 10.00%  
PIK Rate 10.00% [16] 10.00% [34] 10.00%  
Principal $ 305 [16] $ 305 [34]    
Cost 305 [16] 305 [34]    
Fair value $ 305 [16] $ 305 [34] $ 197 192
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 4,699 [26] 4,699 [27]    
Cost $ 1,089 [26] $ 1,089 [27]    
Fair value $ 0 [26] $ 0 [27] 0 0
Investment, Identifier [Axis]: Oneliance, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,128 1,056    
Cost $ 1,128 $ 1,056    
Fair value $ 1,128 $ 1,056 $ 1,056 1,056
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     13.56%  
Reference Rate and Spread 11.00% [14],[15],[17],[31] 11.00% [29],[30] 11.00%  
Principal $ 0 [14],[15],[17],[31] $ 0 [29],[30]    
Cost 0 [14],[15],[17],[31] 0 [29],[30]    
Fair value $ 0 [14],[15],[17],[31] $ 0 [29],[30] $ 0 0
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 16.48% [14] 15.13% [29] 13.56%  
Reference Rate and Spread 11.00% [14] 11.00% [29] 11.00%  
Principal $ 5,520 [14] $ 5,600 [29]    
Cost 5,488 [14] 5,559 [29]    
Fair value $ 5,427 [14] $ 5,559 [29] $ 5,556 5,547
Investment, Identifier [Axis]: Orttech Holdings, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 10,000 [33],[40] 10,000 [32],[41]    
Cost $ 10,000 [33],[40] $ 10,000 [32],[41]    
Fair value $ 17,050 [33],[40] $ 11,750 [32],[41] $ 10,000 10,000
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 11.00% [14],[17],[31] 11.00% [29],[30] 11.00%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost 0 [14],[17],[31] 0 [29],[30]    
Fair value $ 0 [14],[17],[31] $ 0 [29],[30] $ 0 175
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 16.48% [14],[17] 15.13% [29] 13.63%  
Reference Rate and Spread 11.00% [14],[17] 11.00% [29] 11.00%  
Principal $ 22,200 [14],[17] $ 23,600 [29]    
Cost 22,073 [14],[17] 23,429 [29]    
Fair value $ 22,200 [14],[17] $ 23,429 [29] $ 23,417 23,976
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.50% [5],[16] 11.50% [6],[34]    
Principal $ 4,447 [5],[16] $ 4,489 [6],[34]    
Cost 4,447 [5],[16] 4,489 [6],[34]    
Fair value 61 [5],[16] 103 [6],[34]    
Investment, Identifier [Axis]: Other, Affiliate Investments        
Schedule of Investments [Line Items]        
Fair value 0 0 0 0
Investment, Identifier [Axis]: Other, Control Investments        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0 0 0
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,000 [33] 2,000 [32]    
Cost $ 2,150 [33] $ 2,150 [32]    
Fair value $ 17,870 [33] $ 18,950 [32] 19,510 14,360
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 238,421 [40] 238,421    
Cost $ 238 [40] $ 238    
Fair value $ 75 [40] $ 238 $ 157 0
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 8.75% [14],[17],[31] 7.00% [29],[30] 7.00%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30]    
Cost (8) [14],[17],[31] (9) [29],[30]    
Fair value $ 0 [14],[17],[31] $ 0 [29],[30] $ (9) 727
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.98% [14],[17] 10.25% [29] 8.75%  
Reference Rate and Spread 8.75% [14],[17] 7.00% [29] 7.00%  
Principal $ 20,290 [14],[17] $ 21,655 [29]    
Cost 20,094 [14],[17] 21,408 [29]    
Fair value $ 20,290 [14],[17] $ 21,655 [29] $ 19,655 11,655
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[8],[14],[67] 14.22%      
Reference Rate and Spread 6.75% [5],[8],[14],[67] 7.25% [6],[10],[28],[29],[30]    
Principal $ 3,976 [5],[8],[14],[67] $ 0 [6],[10],[28],[29],[30]    
Cost 3,830 [5],[8],[14],[67] (174) [6],[10],[28],[29],[30]    
Fair value $ 3,907 [5],[8],[14],[67] $ (174) [6],[10],[28],[29],[30]    
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.39% [5],[8],[14],[17] 11.80% [6],[10],[28],[29]    
Reference Rate and Spread 7.75% [5],[8],[14],[17] 7.25% [6],[10],[28],[29]    
Principal $ 27,194 [5],[8],[14],[17] $ 28,265 [6],[10],[28],[29]    
Cost 26,766 [5],[8],[14],[17] 27,749 [6],[10],[28],[29]    
Fair value $ 26,721 [5],[8],[14],[17] $ 27,911 [6],[10],[28],[29]    
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29]   10.26%    
Reference Rate and Spread 5.75% [5],[14],[17],[31] 5.75% [6],[28],[29]    
Principal $ 0 [5],[14],[17],[31] $ 541 [6],[28],[29]    
Cost (85) [5],[14],[17],[31] 437 [6],[28],[29]    
Fair value $ 0 [5],[14],[17],[31] $ 530 [6],[28],[29]    
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.17% [5],[14],[17] 9.96% [6],[28],[29],[68]    
Reference Rate and Spread 5.75% [5],[14],[17] 5.75% [6],[28],[29],[68]    
Principal $ 3,221 [5],[14],[17] $ 2,701 [6],[28],[29],[68]    
Cost 3,146 [5],[14],[17] 2,609 [6],[28],[29],[68]    
Fair value $ 3,221 [5],[14],[17] $ 2,649 [6],[28],[29],[68]    
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.17% [5],[14],[17] 9.81% [6],[28],[29]    
Reference Rate and Spread 5.75% [5],[14],[17] 5.75% [6],[28],[29]    
Principal $ 18,645 [5],[14],[17] $ 18,293 [6],[28],[29]    
Cost 18,286 [5],[14],[17] 17,852 [6],[28],[29]    
Fair value $ 18,645 [5],[14],[17] $ 17,939 [6],[28],[29]    
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Member Units        
Schedule of Investments [Line Items]        
Fair value     41,820 26,970
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 15,061 [33] 13,800 [32]    
Cost $ 13,000 [33] $ 13,000 [32]    
Fair value $ 44,090 [33] 43,260 [32]    
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
Principal $ 3,500 0 [30]    
Cost 3,496 0 [30]    
Fair value $ 3,500 0 [30] $ 0 0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00%   12.00%  
Principal $ 17,500 0 [30]    
Cost 17,455 0 [30]    
Fair value $ 17,500 $ 0 [30] $ 0 0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 27,681 $ 28,681    
Cost 27,586 28,537    
Fair value $ 27,681 $ 28,681 $ 28,681 32,674
Investment, Identifier [Axis]: Power System Solutions, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [5] 1,234      
Cost [5] $ 1,234      
Fair value [5] $ 1,234      
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread [5],[14],[17],[31] 6.75%      
Principal [5],[14],[17],[31] $ 0      
Cost [5],[14],[17],[31] (86)      
Fair value [5],[14],[17],[31] $ (86)      
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2        
Schedule of Investments [Line Items]        
Reference Rate and Spread [5],[14],[17],[31] 6.75%      
Principal [5],[14],[17],[31] $ 0      
Cost [5],[14],[17],[31] (86)      
Fair value [5],[14],[17],[31] $ (86)      
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.03%      
Reference Rate and Spread [5],[14],[17] 6.75%      
Principal [5],[14],[17] $ 18,464      
Cost [5],[14],[17] 17,948      
Fair value [5],[14],[17] $ 18,278      
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.87%      
Reference Rate and Spread [5],[14],[17] 6.85%      
Principal [5],[14],[17] $ 8,752      
Cost [5],[14],[17] 8,509      
Fair value [5],[14],[17] $ 8,664      
Investment, Identifier [Axis]: Principle Environmental, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,037 1,037    
Cost $ 1,200 $ 1,200    
Fair value $ 510 $ 590 790 710
Investment, Identifier [Axis]: Principle Environmental, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 21,806 [33] 21,806 [32]    
Cost $ 5,709 [33] $ 5,709 [32]    
Fair value $ 10,630 [33] 12,420 [32] 12,230 11,160
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 5,897      
Cost 5,823      
Fair value 5,823      
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [30]   0    
Cost [30]   0    
Fair value $ 0 $ 0 [30] $ 0 1,465
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00% 13.00%  
Principal   $ 5,897    
Cost   5,806    
Fair value $ 5,823 $ 5,806 $ 5,800 5,808
Investment, Identifier [Axis]: Project Eagle Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.00% [5],[14],[17],[31] 6.25% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (14) [5],[14],[17],[31] (18) [6],[29],[30]    
Fair value $ (14) [5],[14],[17],[31] $ (18) [6],[29],[30]    
Investment, Identifier [Axis]: Project Eagle Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.43% [5],[14],[17] 10.64% [6],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.25% [6],[29]    
Principal $ 29,144 [5],[14],[17] $ 29,475 [6],[29]    
Cost 28,807 [5],[14],[17] 29,040 [6],[29]    
Fair value $ 29,144 [5],[14],[17] $ 29,419 [6],[29]    
Investment, Identifier [Axis]: Quality Lease Service, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,000 1,000    
Cost $ 7,546 $ 7,513    
Fair value 460 525 $ 625 2,148
Investment, Identifier [Axis]: Quality Lease Service, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Total Rate      
Fair value 0 0 $ 0 0
Investment, Identifier [Axis]: Quality Lease Service, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate     12.00%  
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.64%      
Reference Rate and Spread 7.00% [5],[14],[17] 6.75% [6],[28],[29],[30]    
Principal $ 505 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 496 [5],[14],[17] (11) [6],[28],[29],[30]    
Fair value $ 467 [5],[14],[17] $ (11) [6],[28],[29],[30]    
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.14% [5],[14],[17] 10.56% [6],[28],[29]    
Reference Rate and Spread 6.75% [5],[14],[17] 6.75% [6],[28],[29]    
Principal $ 13,369 [5],[14],[17] $ 13,369 [6],[28],[29]    
Cost 13,270 [5],[14],[17] 13,241 [6],[28],[29]    
Fair value $ 12,361 [5],[14],[17] $ 12,094 [6],[28],[29]    
Investment, Identifier [Axis]: RM Bidder, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,779 [5] 2,779 [6]    
Cost $ 46 [5] $ 46 [6]    
Fair value $ 14 [5] $ 19 [6]    
Investment, Identifier [Axis]: RM Bidder, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 327,532 [5],[69] 327,532 [6],[70]    
Cost $ 425 [5],[69] $ 425 [6],[70]    
Fair value $ 0 [5],[69] $ 0 [6],[70]    
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.18% [5],[14],[17] 12.02% [6],[28],[29],[71]    
Reference Rate and Spread 7.75% [5],[14],[17] 7.75% [6],[28],[29],[71]    
Principal $ 1,781 [5],[14],[17] $ 1,361 [6],[28],[29],[71]    
Cost 1,768 [5],[14],[17] 1,343 [6],[28],[29],[71]    
Fair value $ 1,667 [5],[14],[17] $ 1,258 [6],[28],[29],[71]    
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.18% [5],[14],[17] 11.49% [6],[28],[29]    
Reference Rate and Spread 7.75% [5],[14],[17] 7.75% [6],[28],[29]    
Principal $ 14,392 [5],[14],[17] $ 16,623 [6],[28],[29]    
Cost 14,319 [5],[14],[17] 16,506 [6],[28],[29]    
Fair value $ 13,478 [5],[14],[17] $ 15,367 [6],[28],[29]    
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.18%      
Reference Rate and Spread [5],[14],[17] 7.75%      
Principal [5],[14],[17] $ 577      
Cost [5],[14],[17] 574      
Fair value [5],[14],[17] $ 540      
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.13% [11],[14],[17] 8.84% [12],[29]    
Reference Rate and Spread 5.50% [11],[14],[17] 5.50% [12],[29]    
Principal $ 19,809 [11],[14],[17] $ 19,966 [12],[29]    
Cost 19,672 [11],[14],[17] 19,745 [12],[29]    
Fair value $ 14,482 [11],[14],[17] $ 15,116 [12],[29]    
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.82%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 5,727      
Cost [5],[14],[17] 5,431      
Fair value [5],[14],[17] $ 5,431      
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.82%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 57,273      
Cost [5],[14],[17] 55,611      
Fair value [5],[14],[17] $ 55,611      
Investment, Identifier [Axis]: River Aggregates, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,500 [40] 1,500 [41]    
Cost $ 369 [40] $ 369 [41]    
Fair value $ 3,620 [40] $ 3,620 [41] 3,460 3,280
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 11,070 11,070    
Cost $ 11,070 $ 11,070    
Fair value 2,790 14,880 $ 15,210 11,070
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     13.63%  
Reference Rate and Spread     11.00%  
Principal 0 [31] 0 [29],[30]    
Cost (29) [31] (35) [29],[30]    
Fair value $ (29) [31] $ (35) [29],[30] $ (38) (44)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 12.50% [29] 13.63%  
Reference Rate and Spread     11.00%  
Principal $ 34,560 $ 35,685 [29]    
Cost 34,339 35,404 [29]    
Fair value $ 33,729 $ 35,404 [29] $ 35,609 36,000
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 250 250    
Cost $ 2,500 $ 2,500    
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [34],[39],[72]   12.00%    
Principal [34],[39],[72]   $ 30,369    
Cost [34],[39],[72]   29,865    
Fair value [34],[39],[72]   $ 0    
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [6],[28],[29]   10.97%    
Reference Rate and Spread 6.50% [5],[14],[17],[31] 6.50% [6],[28],[29]    
Principal $ 0 [5],[14],[17],[31] $ 311 [6],[28],[29]    
Cost (9) [5],[14],[17],[31] 300 [6],[28],[29]    
Fair value $ 0 [5],[14],[17],[31] $ 311 [6],[28],[29]    
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.01% [5],[14],[17] 10.32% [6],[28],[29]    
Reference Rate and Spread 6.50% [5],[14],[17] 6.50% [6],[28],[29]    
Principal $ 3,376 [5],[14],[17] $ 2,333 [6],[28],[29]    
Cost 3,324 [5],[14],[17] 2,291 [6],[28],[29]    
Fair value $ 3,376 [5],[14],[17] $ 2,333 [6],[28],[29]    
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 14.01% [5],[14],[17] 10.32% [6],[28],[29]    
Reference Rate and Spread 8.50% [5],[14],[17] 6.50% [6],[28],[29]    
Principal $ 3,376 [5],[14],[17] $ 3,173 [6],[28],[29]    
Cost 3,324 [5],[14],[17] 3,125 [6],[28],[29]    
Fair value $ 3,376 [5],[14],[17] $ 3,173 [6],[28],[29]    
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.33% [5],[14],[17] 13.02% [6],[28],[29]    
Reference Rate and Spread 5.75% [5],[14],[17] 6.25% [6],[28],[29]    
PIK Rate 2.00% [5],[14],[17] 2.00% [6],[28],[29]    
Principal $ 5,740 [5],[14],[17] $ 5,625 [6],[28],[29]    
Cost 5,718 [5],[14],[17] 5,590 [6],[28],[29]    
Fair value $ 5,622 [5],[14],[17] $ 5,037 [6],[28],[29]    
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.33% [5],[14],[17] 13.02% [6],[28],[29]    
Reference Rate and Spread 5.75% [5],[14],[17] 6.25% [6],[28],[29]    
PIK Rate 2.00% [5],[14],[17] 2.00% [6],[28],[29]    
Principal $ 8,286 [5],[14],[17] $ 8,340 [6],[28],[29]    
Cost 8,215 [5],[14],[17] 8,223 [6],[28],[29]    
Fair value $ 8,115 [5],[14],[17] $ 7,478 [6],[28],[29]    
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 165 [33] 157 [32]    
Cost $ 1,525 [33] $ 1,218 [32]    
Fair value $ 17,540 [33] 13,650 [32] $ 14,950 11,570
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.25%   10.25%  
Principal $ 1,875 [31] 0 [30]    
Cost 1,857 [31] 0 [30]    
Fair value $ 1,875 [31] $ 0 [30] $ 2,250 2,250
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.49% [73] 9.50% 10.25%  
Principal $ 54,536 [73] $ 89,786    
Cost 54,282 [73] 89,708    
Fair value $ 54,536 [73] 89,786 $ 93,236 63,600
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2.1        
Schedule of Investments [Line Items]        
Total Rate 12.49%      
Fair value $ 54,536 0    
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 89,786    
Investment, Identifier [Axis]: SIB Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 95,238 [5] 95,238 [6]    
Cost $ 200 [5] $ 200 [6]    
Fair value $ 43 [5] $ 146 [6]    
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.81% [5],[14],[17] 11.01% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17] 6.25% [6],[29]    
Principal $ 728 [5],[14],[17] $ 417 [6],[29]    
Cost 720 [5],[14],[17] 408 [6],[29]    
Fair value $ 658 [5],[14],[17] $ 393 [6],[29]    
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.81% [5],[14],[17] 11.01% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17] 6.25% [6],[29]    
Principal $ 1,534 [5],[14],[17] $ 1,553 [6],[29]    
Cost 1,513 [5],[14],[17] 1,527 [6],[29]    
Fair value $ 1,389 [5],[14],[17] $ 1,433 [6],[29]    
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.81% [5],[14],[17] 11.01% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17] 6.25% [6],[29]    
Principal $ 6,017 [5],[14],[17] $ 7,750 [6],[29]    
Cost 5,937 [5],[14],[17] 7,626 [6],[29]    
Fair value $ 5,440 [5],[14],[17] $ 7,151 [6],[29]    
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.81%      
Reference Rate and Spread [5],[14],[17] 6.25%      
Principal [5],[14],[17] $ 457      
Cost [5],[14],[17] 451      
Fair value [5],[14],[17] $ 413      
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.81%      
Reference Rate and Spread [5],[14],[17] 6.25%      
Principal [5],[14],[17] $ 1,110      
Cost [5],[14],[17] 1,096      
Fair value [5],[14],[17] $ 1,003      
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 638,710 [5] 638,710 [6]    
Cost $ 639 [5] $ 639 [6]    
Fair value $ 499 [5] $ 639 [6]    
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 13.11%      
Reference Rate and Spread 7.50% [5],[14],[17] 7.50% [6],[28],[29],[30]    
Principal $ 2,491 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 2,443 [5],[14],[17] (57) [6],[28],[29],[30]    
Fair value $ 2,491 [5],[14],[17] $ (57) [6],[28],[29],[30]    
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.22% [5],[14],[17] 11.06% [6],[28],[29]    
Reference Rate and Spread 7.50% [5],[14],[17] 7.50% [6],[28],[29]    
Principal $ 15,768 [5],[14],[17] $ 15,928 [6],[28],[29]    
Cost 15,530 [5],[14],[17] 15,641 [6],[28],[29]    
Fair value $ 15,768 [5],[14],[17] $ 15,928 [6],[28],[29]    
Investment, Identifier [Axis]: Savers, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[28],[29]   10.34%    
Reference Rate and Spread [12],[28],[29]   5.50%    
Principal [12],[28],[29]   $ 11,286    
Cost [12],[28],[29]   11,199    
Fair value [12],[28],[29]   $ 10,938    
Investment, Identifier [Axis]: Slick Innovations, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 70,000 [33] 70,000 [32]    
Cost $ 456 [33] $ 456 [32]    
Fair value $ 1,990 [33] $ 1,530 [32] $ 1,640 1,510
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.00% 14.00% 11.00%  
Principal $ 12,160 $ 13,840    
Cost 12,054 13,698    
Fair value $ 12,160 $ 13,840 $ 4,240 5,320
Investment, Identifier [Axis]: Slick Innovations, LLC, Warrants        
Schedule of Investments [Line Items]        
Fair value     440 400
Investment, Identifier [Axis]: Sonic Systems International, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [6]   9,968    
Cost [6]   $ 1,356    
Fair value   $ 1,280 [6] $ 1,420 1,070
Investment, Identifier [Axis]: Sonic Systems International, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   11.24% [6],[29] 9.75%  
Reference Rate and Spread   7.50% [6],[29] 7.50%  
Principal [6],[29]   $ 15,769    
Cost [6],[29]   15,527    
Fair value   $ 15,769 [6],[29] $ 15,613 11,757
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 863,636 [5] 863,636 [6]    
Cost $ 864 [5] $ 864 [6]    
Fair value $ 1,062 [5] $ 1,316 [6]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 6.25% [5],[14],[17],[31] 5.75% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (57) [5],[14],[17],[31] (71) [6],[29],[30]    
Fair value $ (57) [5],[14],[17],[31] $ (71) [6],[29],[30]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.95% [5],[14],[17] 9.69% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17] 5.75% [6],[29]    
Principal $ 34,990 [5],[14],[17] $ 41,255 [6],[29]    
Cost 34,540 [5],[14],[17] 40,603 [6],[29]    
Fair value $ 34,990 [5],[14],[17] $ 41,255 [6],[29]    
Investment, Identifier [Axis]: Staples Canada ULC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6],[10],[18],[29],[74]   11.83%    
Reference Rate and Spread [6],[10],[18],[29],[74]   7.00%    
Principal [6],[10],[18],[29],[74]   $ 13,740    
Cost [6],[10],[18],[29],[74]   13,698    
Fair value [6],[10],[18],[29],[74]   $ 12,481    
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.07% [11],[14],[17] 10.05% [12],[28],[29]    
Reference Rate and Spread 5.50% [11],[14],[17] 5.50% [12],[28],[29]    
Principal $ 7,546 [11],[14],[17] $ 7,623 [12],[28],[29]    
Cost 7,491 [11],[14],[17] 7,559 [12],[28],[29]    
Fair value $ 7,471 [11],[14],[17] $ 7,166 [12],[28],[29]    
Investment, Identifier [Axis]: Student Resource Center, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 5,907,649 [5] 5,907,649 [6]    
Cost $ 0 [5] $ 0 [6]    
Fair value $ 120 [5] $ 0 [6]    
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 8.50% [5] 13.27% [6]    
Reference Rate and Spread [6]   8.50%    
PIK Rate [5] 8.50%      
Principal $ 5,327 [5] $ 5,000 [6]    
Cost 4,883 [5] 4,556 [6]    
Fair value $ 4,770 [5] $ 4,556 [6]    
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,636 1,571    
Cost $ 4,500 $ 4,500    
Fair value $ 5,940 $ 4,500 $ 4,500 4,500
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 20,500 $ 21,500    
Cost 20,416 21,378    
Fair value $ 20,416 $ 21,378 $ 21,367 21,332
Investment, Identifier [Axis]: Tacala Investment Corp., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [29],[75],[76]   7.88%    
Reference Rate and Spread [29],[75],[76]   3.50%    
Principal [29],[75],[76]   $ 1,974    
Cost [29],[75],[76]   1,974    
Fair value [29],[75],[76]   $ 1,904    
Investment, Identifier [Axis]: Team Public Choices, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.88% [11],[14],[17] 9.93% [12],[29]    
Reference Rate and Spread 5.00% [11],[14],[17] 5.00% [12],[29]    
Principal $ 14,842 [11],[14],[17] $ 14,964 [12],[29]    
Cost 14,612 [11],[14],[17] 14,690 [12],[29]    
Fair value $ 14,629 [11],[14],[17] $ 14,290 [12],[29]    
Investment, Identifier [Axis]: Tectonic Financial, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 200,000 [33] 200,000 [32]    
Cost $ 2,000 [33] $ 2,000 [32]    
Fair value $ 5,030 [33] $ 5,630 [32]    
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares)   544    
Cost   $ 9,245    
Fair value   7,681 $ 7,137 8,579
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 544      
Cost $ 9,245      
Fair value $ 3,601 7,681    
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 4,248      
Cost $ 425      
Fair value $ 603 0    
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) 4,800      
Cost $ 480      
Fair value $ 1,200 $ 0    
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [15] 12.00% 12.00%  
Principal $ 1,840 [15] $ 1,840    
Cost 1,840 [15] 1,840    
Fair value $ 1,782 [15] $ 1,840 $ 1,840 1,040
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [15] 12.00% 12.00%  
Principal $ 15,200 [15] $ 15,200    
Cost 15,200 [15] 15,192    
Fair value $ 14,724 [15] $ 15,120 $ 15,117 15,141
Investment, Identifier [Axis]: Televerde, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 460 [33] 460    
Cost $ 1,290 [33] $ 1,290    
Fair value $ 5,099 [33] $ 5,408 5,204 7,280
Investment, Identifier [Axis]: Televerde, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 248 248    
Cost $ 718 $ 718    
Fair value $ 1,794 $ 1,794 1,794 0
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,000,000 [5],[40] 1,000,000 [6],[41]    
Cost $ 1,000 [5],[40] $ 1,000 [6],[41]    
Fair value $ 2,299 [5],[40] $ 1,830 [6],[41]    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) [32]   1,280,000    
Cost [32]   $ 6,400    
Fair value   6,400 [32] 6,400 6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) [33] 1,280,000      
Cost [33] $ 6,400      
Fair value $ 6,400 [33] 6,400    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 172,110      
Cost $ 172      
Fair value 172 $ 0    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   13.00%    
Principal 0 [31] $ 120    
Cost (11) [31] 106    
Fair value $ (11) [31] $ 106 $ (15) 262
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00% 13.00%  
Principal $ 7,921 $ 9,521    
Cost 7,868 9,442    
Fair value $ 7,739 $ 9,442 $ 11,149 12,834
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 615 [33] 615 [32]    
Cost $ 4,655 [33] $ 4,655 [32]    
Fair value 13,400 [33] 7,800 [32] $ 7,420 8,660
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     8.00%  
Principal 0 [31] 0 [30]    
Cost (3) [31] (5) [30]    
Fair value $ 0 [31] $ 0 [30] $ (5) (8)
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 7,920 $ 7,920    
Cost 7,907 7,894    
Fair value $ 7,920 $ 7,920 $ 8,320 8,720
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[28],[29]   11.57%    
Reference Rate and Spread [12],[28],[29]   1.25%    
PIK Rate [12],[28],[29]   7.25%    
Principal [12],[28],[29]   $ 18,352    
Cost [12],[28],[29]   18,284    
Fair value [12],[28],[29]   $ 6,859    
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [11],[14],[16],[17] 6.00%      
Reference Rate and Spread [11],[14],[16],[17] 1.00%      
PIK Rate [11],[14],[16],[17] 6.00%      
Principal [11],[14],[16],[17] $ 9,298      
Cost [11],[14],[16],[17] 3,745      
Fair value [11],[14],[16],[17] $ 3,678      
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [11],[14],[16],[17] 6.00%      
Reference Rate and Spread [11],[14],[16],[17] 1.00%      
PIK Rate [11],[14],[16],[17] 6.00%      
Principal [11],[14],[16],[17] $ 946      
Cost [11],[14],[16],[17] 20      
Fair value [11],[14],[16],[17] $ 0      
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [6],[29]   9.82%    
Reference Rate and Spread [6],[29]   5.75%    
Principal [6],[29]   $ 33,577    
Cost [6],[29]   33,031    
Fair value [6],[29]   $ 33,577    
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.42%      
Reference Rate and Spread [5],[14],[17] 6.00%      
Principal [5],[14],[17] $ 33,322      
Cost [5],[14],[17] 32,888      
Fair value [5],[14],[17] $ 33,322      
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.92%      
Reference Rate and Spread [5],[14],[17] 6.50%      
Principal [5],[14],[17] $ 12,947      
Cost [5],[14],[17] 12,708      
Fair value [5],[14],[17] $ 12,947      
Investment, Identifier [Axis]: UniTek Global Services, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 945,507 [11] 945,507 [12]    
Cost $ 0 [11] $ 0 [12]    
Fair value $ 0 [11] $ 0 [12] $ 0 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,133,102 [11],[33] 1,133,102 [12],[32]    
Total Rate 20.00% [11],[33] 20.00% [12],[32] 20.00%  
PIK Rate 20.00% [11],[33] 20.00% [12],[32] 20.00%  
Cost $ 2,482 [11],[33] $ 2,141 [12],[32]    
Fair value $ 2,833 [11],[33] $ 2,833 [12],[32] $ 2,833 2,832
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 1,521,122 [11] 1,521,122 [12]    
Total Rate 20.00% [11] 20.00% [12] 20.00%  
PIK Rate 20.00% [11] 20.00% [12] 20.00%  
Cost $ 2,188 [11] $ 2,188 [12]    
Fair value $ 3,977 [11] $ 1,991 [12] $ 1,651 1,498
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3        
Schedule of Investments [Line Items]        
Units (in shares) 2,281,682 [11] 2,281,682 [12]    
Total Rate 19.00% [11] 19.00% [12] 19.00%  
PIK Rate 19.00% [11] 19.00% [12] 19.00%  
Cost $ 3,667 [11] $ 3,667 [12]    
Fair value $ 0 [11] $ 0 [12] $ 0 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4        
Schedule of Investments [Line Items]        
Units (in shares) 4,336,866 [11] 4,336,866 [12]    
Total Rate 13.50% [11] 13.50% [12] 13.50%  
PIK Rate 13.50% [11] 13.50% [12] 13.50%  
Cost $ 7,924 [11] $ 7,924 [12]    
Fair value $ 0 [11] $ 0 [12] $ 0 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt        
Schedule of Investments [Line Items]        
Total Rate   15.00% [12] 15.00%  
PIK Rate   15.00% [12] 15.00%  
Principal [12]   $ 2,403    
Cost [12]   2,403    
Fair value   4,592 [12] $ 4,271 2,375
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1        
Schedule of Investments [Line Items]        
Total Rate [11] 15.00%      
PIK Rate [11] 15.00%      
Principal [11] $ 1,650      
Cost [11] 1,650      
Fair value $ 4,044 [11] 4,592    
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2        
Schedule of Investments [Line Items]        
Total Rate [11] 15.00%      
PIK Rate [11] 15.00%      
Principal [11] $ 809      
Cost [11] 809      
Fair value $ 1,983 [11] $ 0    
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   10.76% [12],[28],[29] 10.76%  
Reference Rate and Spread 7.50% 5.50% [12],[28],[29] 5.50%  
PIK Rate   2.00% [12],[28],[29] 2.00%  
Principal [12],[28],[29]   $ 406    
Cost [12],[28],[29]   405    
Fair value $ 0 $ 382 [12],[28],[29] $ 380 371
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   10.76% [12],[28],[29] 10.76%  
Reference Rate and Spread 7.50% 5.50% [12],[28],[29] 5.50%  
PIK Rate   2.00% [12],[28],[29] 2.00%  
Principal [12],[28],[29]   $ 1,814    
Cost [12],[28],[29]   1,807    
Fair value $ 0 $ 1,712 [12],[28],[29] $ 1,701 1,852
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP, LP Interests        
Schedule of Investments [Line Items]        
Units (percentage) 11.11% [7],[8],[33],[44] 11.11% [9],[10],[32],[45]    
Cost $ 3,978 [7],[8],[33],[44] $ 3,734 [9],[10],[32],[45]    
Fair value $ 5,135 [7],[8],[33],[44] 5,855 [9],[10],[32],[45] 5,354 6,123
Investment, Identifier [Axis]: UnionRock Energy Fund III, LP, LP Interests        
Schedule of Investments [Line Items]        
Units (percentage) [7],[8],[44] 30.03%      
Cost [7],[8],[44] $ 1,051      
Fair value $ 1,051 [7],[8],[44] $ 0    
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 4,000,000 [5],[40] 4,000,000 [6],[41]    
Cost $ 4,000 [5],[40] $ 4,000 [6],[41]    
Fair value $ 0 [5],[40] $ 0 [6],[41]    
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 716,949 [5],[40] 716,949 [6],[41]    
Total Rate 14.00% [5],[40] 14.00% [6],[41]    
PIK Rate 14.00% [5],[40] 14.00% [6],[41]    
Cost $ 1,032 [5],[40] $ 1,032 [6],[41]    
Fair value $ 220 [5],[40] $ 220 [6],[41]    
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.42%      
Reference Rate and Spread [5],[14],[17] 7.50%      
Principal [5],[14],[17] $ 4,000      
Cost [5],[14],[17] 3,894      
Fair value [5],[14],[17] $ 4,000      
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,038,462 [5],[33] 1,038,462 [6],[32]    
Cost $ 1,038 [5],[33] $ 1,038 [6],[32]    
Fair value $ 2,969 [5],[33] $ 3,930 [6],[32]    
Investment, Identifier [Axis]: VVS Holdco LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 11,840 [33],[40] 11,840 [32],[41]    
Cost $ 11,840 [33],[40] $ 11,840 [32],[41]    
Fair value $ 11,840 [33],[40] $ 11,940 [32],[41] $ 12,078 11,840
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     8.63%  
Reference Rate and Spread 6.00% [14],[17],[31] 6.00% [29],[30],[41] 6.00%  
Principal $ 0 [14],[17],[31] $ 0 [29],[30],[41]    
Cost (4) [14],[17],[31] (21) [29],[30],[41]    
Fair value $ (4) [14],[17],[31] $ (21) [29],[30],[41] $ 773 1,169
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.50% 11.50% [41] 11.50%  
Principal $ 28,200 $ 30,400 [41]    
Cost 28,021 30,158 [41]    
Fair value $ 28,021 $ 30,161 [41] $ 30,146 30,100
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 5.25% [11],[14],[17],[31] 5.25% [12],[29],[30]    
Principal $ 0 [11],[14],[17],[31] $ 0 [12],[29],[30]    
Cost (463) [11],[14],[17],[31] (630) [12],[29],[30]    
Fair value $ (463) [11],[14],[17],[31] $ (630) [12],[29],[30]    
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.63% [11],[14],[17] 10.41% [12],[29]    
Reference Rate and Spread 6.00% [11],[14],[17] 6.00% [12],[29]    
Principal $ 17,473 [11],[14],[17] $ 17,685 [12],[29]    
Cost 17,219 [11],[14],[17] 17,381 [12],[29]    
Fair value $ 15,603 [11],[14],[17] $ 15,479 [12],[29]    
Investment, Identifier [Axis]: Vida Capital, Inc, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12]   10.38%    
Reference Rate and Spread [12]   6.00%    
Principal [12]   $ 15,448    
Cost [12]   15,313    
Fair value [12]   $ 12,049    
Investment, Identifier [Axis]: Vision Interests, Inc., Series A Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 3,000,000 [33] 3,000,000 [32]    
Cost $ 3,000 [33] $ 3,000 [32]    
Fair value $ 3,000 [33] $ 3,000 [32] 3,000 3,000
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 70,207 [5] 70,207 [6]    
Cost $ 767 [5] $ 767 [6]    
Fair value $ 2,339 [5] 2,250 [6]    
Investment, Identifier [Axis]: Volusion, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,802,780      
Cost $ 2,576      
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares)   4,876,670    
Cost   $ 14,000    
Fair value   0 $ 0 5,990
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 4,876,670      
Cost $ 14,000      
Fair value $ 0 0    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 5,097,595      
Cost $ 10,746      
Fair value $ 9,350 0    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) 142,512      
Cost $ 0      
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% 11.50% [39] 11.50%  
Principal $ 2,100 $ 16,734 [39]    
Cost 2,100 16,734 [39]    
Fair value $ 2,100 14,914 [39] $ 16,630 17,434
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
Fair value $ 2,100 0    
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value 0 $ 14,914    
Investment, Identifier [Axis]: Volusion, LLC, Unsecured Convertible Debt        
Schedule of Investments [Line Items]        
Total Rate   8.00% 8.00%  
Principal   $ 409    
Cost   409    
Fair value 0 $ 0 $ 409 409
Investment, Identifier [Axis]: Volusion, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [27]   1,831,355    
Cost [27]   $ 2,576    
Fair value $ 0 $ 0 [27] 0 0
Investment, Identifier [Axis]: Wahoo Fitness Acquisition L.L.C., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[28],[29]   10.64%    
Reference Rate and Spread [12],[28],[29]   5.75%    
Principal [12],[28],[29]   $ 14,625    
Cost [12],[28],[29]   14,268    
Fair value [12],[28],[29]   $ 8,409    
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 400,000 [5] 400,000 [6]    
Cost $ 400 [5] $ 400 [6]    
Fair value $ 469 [5] $ 420 [6]    
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 7.00% [5],[14],[17],[31] 7.00% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (4) [5],[14],[17],[31] (6) [6],[29],[30]    
Fair value $ (4) [5],[14],[17],[31] $ (6) [6],[29],[30]    
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.40% [5],[14],[17] 10.74% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[17] 7.00% [6],[29]    
Principal $ 3,723 [5],[14],[17] $ 4,235 [6],[29]    
Cost 3,680 [5],[14],[17] 4,173 [6],[29]    
Fair value $ 3,723 [5],[14],[17] $ 4,146 [6],[29]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.79% [5],[14],[17],[77] 10.73% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17],[77] 6.00% [6],[29]    
Principal $ 2,223 [5],[14],[17],[77] $ 371 [6],[29]    
Cost 2,194 [5],[14],[17],[77] 334 [6],[29]    
Fair value $ 2,223 [5],[14],[17],[77] $ 370 [6],[29]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.79% [5],[14],[17] 10.73% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17] 6.00% [6],[29]    
Principal $ 388 [5],[14],[17] $ 391 [6],[29]    
Cost 364 [5],[14],[17] 361 [6],[29]    
Fair value $ 388 [5],[14],[17] $ 391 [6],[29]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.79% [5],[14],[17] 10.73% [6],[29]    
Reference Rate and Spread 6.25% [5],[14],[17] 6.00% [6],[29]    
Principal $ 15,967 [5],[14],[17] $ 28,957 [6],[29]    
Cost 15,802 [5],[14],[17] 28,591 [6],[29]    
Fair value $ 15,967 [5],[14],[17] $ 28,947 [6],[29]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.79%      
Reference Rate and Spread [5],[14],[17] 6.25%      
Principal [5],[14],[17] $ 12,771      
Cost [5],[14],[17] 12,640      
Fair value [5],[14],[17] $ 12,771      
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,541,400 [5] 1,541,400 [6]    
Cost $ 1,541 [5] $ 1,541 [6]    
Fair value $ 2,759 [5] $ 1,950 [6]    
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 11.39%      
Reference Rate and Spread 6.00% [5],[14],[17] 6.00% [6],[28],[29],[30]    
Principal $ 1,205 [5],[14],[17] $ 0 [6],[28],[29],[30]    
Cost 1,175 [5],[14],[17] (20) [6],[28],[29],[30]    
Fair value $ 1,205 [5],[14],[17] $ (20) [6],[28],[29],[30]    
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.35% [5],[14],[17] 8.59% [6],[28],[29]    
Reference Rate and Spread 6.00% [5],[14],[17] 6.00% [6],[28],[29]    
Principal $ 10,685 [5],[14],[17] $ 10,794 [6],[28],[29]    
Cost 10,527 [5],[14],[17] 10,608 [6],[28],[29]    
Fair value $ 10,685 [5],[14],[17] $ 10,685 [6],[28],[29]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Reference Rate and Spread 7.00% [5],[14],[17],[31] 7.00% [6],[29],[30]    
Principal $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Cost (28) [5],[14],[17],[31] (34) [6],[29],[30]    
Fair value $ 0 [5],[14],[17],[31] $ 0 [6],[29],[30]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [5],[14],[17] 12.51%      
Reference Rate and Spread 7.00% [5],[14],[17] 7.00% [6],[29],[30]    
Principal $ 2,067 [5],[14],[17] $ 0 [6],[29],[30]    
Cost 2,033 [5],[14],[17] (17) [6],[29],[30]    
Fair value $ 2,067 [5],[14],[17] $ (17) [6],[29],[30]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.51% [5],[14],[17] 10.74% [6],[29]    
Reference Rate and Spread 7.00% [5],[14],[17] 7.00% [6],[29]    
Principal $ 9,300 [5],[14],[17] $ 10,000 [6],[29]    
Cost 9,182 [5],[14],[17] 9,848 [6],[29]    
Fair value $ 9,300 [5],[14],[17] $ 9,992 [6],[29]    
Investment, Identifier [Axis]: World Micro Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,845 [33] 3,845    
Cost $ 3,845 [33] $ 3,845    
Fair value $ 3,845 [33] $ 3,845    
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00%    
Principal $ 13,402 $ 14,280    
Cost 13,290 14,140    
Fair value $ 13,290 $ 14,140    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [5],[17] 10.68%      
Reference Rate and Spread 5.25% [5],[17] 5.25% [6],[30]    
Principal $ 4,032 [5],[17] $ 0 [6],[30]    
Cost 3,854 [5],[17] (218) [6],[30]    
Fair value $ 4,032 [5],[17] $ (218) [6],[30]    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.76% [5],[17] 10.84% [6]    
Reference Rate and Spread 5.25% [5],[17] 5.25% [6]    
Principal $ 24,118 [5],[17] $ 24,300 [6]    
Cost 23,750 [5],[17] 23,864 [6]    
Fair value $ 24,118 [5],[17] $ 24,135 [6]    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.66% [5],[17] 8.63% [6]    
Reference Rate and Spread 5.25% [5],[17] 5.25% [6]    
Principal $ 37,925 [5],[17] $ 38,311 [6]    
Cost 37,400 [5],[17] 37,691 [6]    
Fair value $ 37,925 [5],[17] $ 38,051 [6]    
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.93% [11],[14],[17] 9.51% [12],[29]    
Reference Rate and Spread 7.50% [11],[14],[17] 5.50% [12],[29]    
Principal $ 11,355 [11],[14],[17] $ 12,659 [12],[29]    
Cost 11,137 [11],[14],[17] 12,619 [12],[29]    
Fair value $ 10,257 [11],[14],[17] $ 12,127 [12],[29]    
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 10,072 10,072    
Cost $ 2,834 $ 2,834    
Fair value $ 0 $ 240 $ 1,190 2,130
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 450 $ 450    
Cost 450 450    
Fair value $ 450 $ 450 $ 450 625
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 6.50% 6.50% 6.50%  
Principal $ 1,000 $ 1,000    
Cost 1,000 1,000    
Fair value $ 945 $ 945 $ 1,000 1,000
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 14.00% 14.00% 14.00%  
Principal $ 2,750 $ 2,750    
Cost 2,750 2,750    
Fair value $ 2,372 $ 2,676 $ 2,676 2,750
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 587 [26] 587 [27]    
Cost $ 600 [26] $ 600 [27]    
Fair value $ 0 [26] $ 0 [27] $ 0 $ 0
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.67% [5],[14],[17],[78] 11.67% [6],[28],[29]    
Reference Rate and Spread 7.25% [5],[14],[17],[78] 7.25% [6],[28],[29]    
Principal $ 17,279 [5],[14],[17],[78] $ 17,512 [6],[28],[29]    
Cost 17,195 [5],[14],[17],[78] 17,279 [6],[28],[29]    
Fair value $ 16,199 [5],[14],[17],[78] $ 17,512 [6],[28],[29]    
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.68% [5],[14],[17],[78] 11.67% [6],[28],[29],[76]    
Reference Rate and Spread 7.25% [5],[14],[17],[78] 7.25% [6],[28],[29],[76]    
Principal $ 4,331 [5],[14],[17],[78] $ 4,389 [6],[28],[29],[76]    
Cost 4,320 [5],[14],[17],[78] 4,360 [6],[28],[29],[76]    
Fair value $ 4,060 [5],[14],[17],[78] $ 4,379 [6],[28],[29],[76]    
[1] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[2] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[3] 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.
[4] 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.
[5] Private Loan portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Private Loan portfolio investments.
[6] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments.
[7] Other Portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Other Portfolio investments.
[8] 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.
[9] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments.
[10] 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.
[11] Middle Market portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Middle Market portfolio investments.
[12] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments.
[13] Portfolio company headquarters are located outside of the United States.
[14] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 91% of the loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.13%.
[15] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[16] Non-accrual and non-income producing debt investment.
[17] A majority of the variable rate loans in the Company’s investment portfolio bear interest at a rate that may be determined by reference to either LIBOR (“L”), SOFR (“SF”) or an alternate Base Rate (commonly based on the Federal Funds Rate or the Prime Rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR rate, plus the Adjustment, exceeds the stated floor rate, as applicable. As of September 30, 2023, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.43%.
[18] Portfolio company headquarters are located outside of the United States.
[19] Short-term investments represent an investment in a fund that invests in highly liquid investments with average original maturity dates of three months or less. These short-term investments are included as Cash and cash equivalents on the Consolidated Balance Sheets.
[20] 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
[21] 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.
[22] 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.
[23] 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.
[24] Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[25] Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[26] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit.
[27] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit.
[28] A majority of the variable rate loans in the Company’s Investment Portfolio bear interest at a rate that may be determined by reference to either LIBOR (“L”), SOFR (“SF”) or an alternate Base rate (commonly based on the Federal Funds Rate or the Prime rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR rate, plus the Adjustment, exceeds the stated floor rate, as applicable. As of December 31, 2022, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.35%.
[29] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 66% of these floating rate loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.04%.
[30] The position is unfunded and no interest income is being earned as of December 31, 2022. The position may earn a nominal unused facility fee on committed amounts.
[31] The position is unfunded and no interest income is being earned as of September 30, 2023. The position may earn a nominal unused facility fee on committed amounts.
[32] Income producing through dividends or distributions.
[33] Income producing through dividends or distributions.
[34] Non-accrual and non-income producing debt investment.
[35] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit.
[36] Index based floating interest rate is subject to contractual maximum base rate of 3.00%.
[37] Index based floating interest rate is subject to contractual maximum base rate of 2.50%.
[38] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+6.00% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[39] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[40] Shares/Units represent ownership in a related Real Estate or HoldCo entity.
[41] Shares/Units represent ownership in a related Real Estate or HoldCo entity.
[42] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+6.25% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[43] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+8.00% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[44] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated.
[45] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated.
[46] The security has an effective contractual interest rate of 2.00% PIK + LIBOR+6.50%, Floor 1.00%, but the issuer may, in its discretion, elect to pay the PIK interest in cash. The rate presented represents the effective current yield based on actual payments received during the period.
[47] As of September 30, 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 September 30, 2023.
[48] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[49] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). Due to an amendment and subsequent funding during the quarter, the term loan facility has different floating rate reset dates. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[50] As of September 30, 2023, borrowings under the loan facility bore interest at LIBOR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023.
[51] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[52] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+8.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023.
[53] Effective yield as of September 30, 2023 was approximately 4.96% on the Dreyfus Government Cash Management.
[54] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[55] Effective yield as of September 30, 2023 was approximately 4.98% on the Fidelity Treasury.
[56] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+6.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023.
[57] Index based floating interest rate is subject to contractual maximum base rate of 2.00%.
[58] Index based floating interest rate is subject to contractual maximum base rate of 1.50%.
[59] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[60] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+6.50% PIK or Prime+5.50% PIK. Revolving facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[61] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit.
[62] As of September 30, 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 September 30, 2023.
[63] As of September 30, 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 September 30, 2023.
[64] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[65] 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.
[66] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+7.25% (Floor 0.75%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[67] As of September 30, 2023, borrowings under the loan facility have multiple contracts that bear interest at either SOFR+7.75% or PRIME+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 the base rate applicable to the majority of the facility and the weighted-average rate for borrowings under the facility, as of September 30, 2023.
[68] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). Delayed draw term loan facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[69] Warrants are presented in equivalent units with a strike price of $14.28 per unit.
[70] Warrants are presented in equivalent units with a strike price of $14.28 per unit.
[71] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.75% (Floor 1.25%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[72] Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investment in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investment in this portfolio company is on non-accrual status.
[73] 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.
[74] In connection with the Company’s debt investment in Staples Canada ULC and in an attempt to mitigate any potential adverse change in foreign exchange rates during the term of the Company’s investment, the Company maintains a forward foreign currency contract with Cadence Bank to lend $16.9 million Canadian Dollars and receive $13.1 million U.S. Dollars with a settlement date of September 14, 2023. The unrealized appreciation on the forward foreign currency contract was $0.6 million as of December 31, 2022.
[75] Short-term portfolio investments. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of short-term portfolio investments.
[76] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). Each new draw on the delayed draw term loan facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022.
[77] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023.
[78] As of September 30, 2023, borrowings under the loan facility bear 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 September 30, 2023.