v3.26.3
Consolidated Schedule of Investments - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Sep. 30, 2025
Dec. 31, 2024
Schedule of Investments [Line Items]        
Cost $ 4,958,925 [1],[2],[3] $ 4,724,528 [4],[5],[6]    
Fair value $ 5,800,369 [1],[2],[7] $ 5,518,117 [4],[5],[8]    
Investment owned, percent of net assets (as a percent) 180.80% [1],[2] 184.30% [4],[5]    
Cash and cash equivalent, Cost $ 102,387 $ 41,959    
Money Market Funds        
Schedule of Investments [Line Items]        
Cash and cash equivalent, Cost 15,395 [3] 3,248 [6]    
Cash and cash equivalents, Fair Value 15,395 [7] 3,248 [8]    
Control investments:        
Schedule of Investments [Line Items]        
Cost 1,930,773 [3],[9] 1,824,132 [6],[10]    
Fair value $ 2,666,715 [7],[9] $ 2,569,626 [8],[10] $ 2,416,174 $ 2,087,890
Investment owned, percent of net assets (as a percent) 83.10% [1],[2],[9] 85.80% [4],[5],[10]    
Affiliate investments:        
Schedule of Investments [Line Items]        
Cost $ 901,424 [3],[11] $ 881,641 [6]    
Fair value $ 1,016,605 [7],[11] $ 965,179 [8] 892,914 846,798
Investment owned, percent of net assets (as a percent) 31.70% [1],[2],[11] 32.20% [4],[5],[12]    
Non‑Control/Non‑Affiliate investments:        
Schedule of Investments [Line Items]        
Cost $ 2,126,728 [3] $ 2,018,755 [6],[13]    
Fair value $ 2,117,049 [7] $ 1,983,312 [8],[13]    
Investment owned, percent of net assets (as a percent) 66.00% [1],[2],[14] 66.20% [4],[5],[13]    
American Nuts, LLC        
Schedule of Investments [Line Items]        
Cost $ 27,199 [3],[15] $ 25,292 [6],[16]    
Fair value 20,649 [7],[15] 18,993 [8],[16]    
Analytical Systems Keco Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 9,519 [3] 9,763 [6]    
Fair value 10,246 [7] 10,010 [8]    
ASC Interests, LLC        
Schedule of Investments [Line Items]        
Cost [6]   3,611    
Fair value [8]   1,902    
Batjer TopCo, LLC        
Schedule of Investments [Line Items]        
Cost 13,693 [3] 14,014 [6]    
Fair value 19,108 [7] 18,695 [8]    
BDB Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 23,149 [3] 21,310 [6]    
Fair value 8,802 [7] 14,413 [8]    
Bettercloud, Inc.        
Schedule of Investments [Line Items]        
Cost [6],[16]   22,907    
Fair value [8],[16]   21,707    
Bolder Panther Group, LLC        
Schedule of Investments [Line Items]        
Cost 114,902 [3] 114,803 [6]    
Fair value 133,146 [7] 132,236 [8]    
Brewer Crane Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 9,673 [3] 9,632 [6]    
Fair value 8,479 [7] 8,812 [8]    
Bridge Capital Solutions Corporation        
Schedule of Investments [Line Items]        
Cost 3,132 [3] 3,132 [6]    
Fair value 0 [7] 0 [8]    
California Splendor Holdings LLC        
Schedule of Investments [Line Items]        
Cost 59,471 [3] 54,736 [6]    
Fair value 57,710 [7] 50,997 [8]    
Bettercloud, Inc.        
Schedule of Investments [Line Items]        
Cost [6]   30,444    
Fair value [8]   66,795    
Chamberlin Holding LLC        
Schedule of Investments [Line Items]        
Cost 54,224 [3] 54,955 [6]    
Fair value 93,470 [7] 81,720 [8]    
Charps, LLC        
Schedule of Investments [Line Items]        
Cost 7,308 [3] 7,230 [6]    
Fair value 20,404 [7] 21,714 [8]    
Clad-Rex Steel, LLC        
Schedule of Investments [Line Items]        
Cost 16,965 [3] 18,116 [6]    
Fair value 26,017 [7] 25,799 [8]    
Cody Pools, Inc.        
Schedule of Investments [Line Items]        
Cost 45,611 [3] 42,571 [6]    
Fair value 98,992 [7] 99,961 [8]    
Colonial Electric Company LLC        
Schedule of Investments [Line Items]        
Cost 16,389 [3] 16,453 [6]    
Fair value 33,669 [7] 25,609 [8]    
CompareNetworks Topco, LLC        
Schedule of Investments [Line Items]        
Cost 7,517 [3] 7,551 [6]    
Fair value 7,109 [7] 11,681 [8]    
Compass Systems & Sales, LLC        
Schedule of Investments [Line Items]        
Cost 22,767 [3] 24,539 [6]    
Fair value 22,767 [7] 24,126 [8]    
Cybermedia Technologies, LLC        
Schedule of Investments [Line Items]        
Cost 43,401 [3] 44,482 [6]    
Fair value 31,486 [7] 33,416 [8]    
Datacom, LLC        
Schedule of Investments [Line Items]        
Cost 11,827 [3] 11,457 [6]    
Fair value 2,850 [7] 4,844 [8]    
Digital Products Holdings LLC        
Schedule of Investments [Line Items]        
Cost 20,746 [3] 21,444 [6]    
Fair value 21,080 [7] 21,173 [8]    
Direct Marketing Solutions, Inc.        
Schedule of Investments [Line Items]        
Cost 55,900 [3] 33,262 [6]    
Fair value 78,275 [7] 44,627 [8]    
Doral Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 33,352 [3] 39,270 [6]    
Fair value 56,230 [7] 42,010 [8]    
Elgin AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 30,025 [3] 30,156 [6]    
Fair value 30,240 [7] 31,192 [8]    
Flame King Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 79,842 [3] 75,815 [6]    
Fair value 122,641 [7] 120,630 [8]    
Gamber-Johnson Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 94,487 [3] 88,524 [6]    
Fair value 197,940 [7] 184,732 [8]    
GRT Rubber Technologies LLC        
Schedule of Investments [Line Items]        
Cost 56,699 [3] 56,660 [6]    
Fair value 83,819 [7] 89,999 [8]    
Harris Preston Fund Investments        
Schedule of Investments [Line Items]        
Cost 4,654 [3],[17],[18] 4,755 [6],[19],[20]    
Fair value 6,503 [7],[17],[18] 7,927 [8],[19],[20]    
IG Investor, LLC        
Schedule of Investments [Line Items]        
Cost 46,939 [3] 50,870 [6]    
Fair value 67,734 [7] 64,694 [8]    
Jensen Jewelers of Idaho, LLC        
Schedule of Investments [Line Items]        
Cost 1,199 [3] 1,689 [6]    
Fair value 12,658 [7] 12,418 [8]    
JorVet Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 33,943 [3] 34,256 [6]    
Fair value 37,770 [7] 34,253 [8]    
JTI Electrical & Mechanical, LLC        
Schedule of Investments [Line Items]        
Cost 46,313 [3],[15] 51,560 [6],[16]    
Fair value 14,485 [7],[15] 43,684 [8],[16]    
KBK Industries, LLC        
Schedule of Investments [Line Items]        
Cost [6]   7,949    
Fair value [8]   25,380    
Kickhaefer Manufacturing Company, LLC        
Schedule of Investments [Line Items]        
Cost 28,482 [3] 27,305 [6]    
Fair value 41,369 [7] 35,443 [8]    
Legacy Swim Group        
Schedule of Investments [Line Items]        
Cost 47,525 [3] 46,687 [6]    
Fair value 47,525 [7] 46,687 [8]    
Metalforming Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 24,650 [3] 24,628 [6]    
Fair value 33,823 [7] 32,923 [8]    
Moffitt Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 46,886 [3] 48,140 [6]    
Fair value 49,446 [7] 49,400 [8]    
MS Private Loan Fund I, LP        
Schedule of Investments [Line Items]        
Cost 32,310 [3],[17],[18] 27,000 [6],[19],[20]    
Fair value 31,505 [7],[17],[18] 26,697 [8],[19],[20]    
MS Private Loan Fund II, LP        
Schedule of Investments [Line Items]        
Cost 12,686 [3],[17],[18] 10,416 [6],[19],[20]    
Fair value 13,424 [7],[17],[18] 10,980 [8],[19],[20]    
MSC Income Fund, Inc.        
Schedule of Investments [Line Items]        
Cost [3],[17],[18] 30,556      
Fair value [7],[17],[18] 24,343      
MVI MSO, LLC        
Schedule of Investments [Line Items]        
Cost 12,482 [3] 12,468 [6]    
Fair value 13,212 [7] 14,538 [8]    
NAPCO Precast, LLC        
Schedule of Investments [Line Items]        
Cost 4,330 [3] 4,145 [6]    
Fair value 11,130 [7] 15,048 [8]    
Nello Industries Investco, LLC        
Schedule of Investments [Line Items]        
Cost 52,368 [3] 43,064 [6]    
Fair value 80,634 [7] 55,402 [8]    
NRP Jones, LLC        
Schedule of Investments [Line Items]        
Cost [6]   7,508    
Fair value [8]   1,402    
NuStep, LLC        
Schedule of Investments [Line Items]        
Cost 35,453 [3] 34,091 [6]    
Fair value 37,692 [7] 37,750 [8]    
OMi Topco, LLC        
Schedule of Investments [Line Items]        
Cost 30,044 [3] 30,036 [6]    
Fair value 108,620 [7] 106,900 [8]    
Orttech Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 30,763 [3] 31,348 [6]    
Fair value 31,638 [7] 34,822 [8]    
Pinnacle TopCo, LLC        
Schedule of Investments [Line Items]        
Cost 37,301 [3] 39,568 [6]    
Fair value 45,120 [7] 47,640 [8]    
PPL RVs, Inc.        
Schedule of Investments [Line Items]        
Cost 17,538 [3] 17,510 [6]    
Fair value 31,979 [7] 33,096 [8]    
Principle Environmental, LLC        
Schedule of Investments [Line Items]        
Cost 13,244 [3] 11,789 [6]    
Fair value 21,767 [7] 21,387 [8]    
Robbins Bros. Jewelry, Inc.        
Schedule of Investments [Line Items]        
Cost 42,121 [3] 42,779 [6]    
Fair value 13,407 [7] 13,967 [8]    
Shift Transit ParentCo, LP        
Schedule of Investments [Line Items]        
Cost [3] 40,486      
Fair value [7] 40,486      
Spring Engineering Holdings, LLC        
Schedule of Investments [Line Items]        
Cost [3] 27,837      
Fair value [7] 27,837      
Tedder Industries, LLC        
Schedule of Investments [Line Items]        
Cost 26,893 [3] 26,376 [6]    
Fair value 7,680 [7] 3,789 [8]    
Televerde, LLC        
Schedule of Investments [Line Items]        
Cost 2,281 [3] 2,008 [6]    
Fair value 2,172 [7] 6,616 [8]    
Trantech Radiator Topco, LLC        
Schedule of Investments [Line Items]        
Cost 43,929 [3] 16,344 [6]    
Fair value 66,816 [7] 26,656 [8]    
Trinity Medical Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 80,532 [3] 80,444 [6]    
Fair value 97,650 [7] 80,444 [8]    
Victory Energy Operations, LLC        
Schedule of Investments [Line Items]        
Cost 68,698 [3] 71,196 [6]    
Fair value 72,547 [7] 72,105 [8]    
VVS Holdco LLC        
Schedule of Investments [Line Items]        
Cost [6]   20,506    
Fair value [8]   5,010    
VVS Holdco LLC        
Schedule of Investments [Line Items]        
Cost 35,432 [3] 36,196 [6]    
Fair value 35,432 [7] 36,196 [8]    
Ziegler’s NYPD, LLC        
Schedule of Investments [Line Items]        
Cost 5,404 [3] 5,054 [6]    
Fair value 1,612 [7] 1,887 [8]    
AAC Holdings, Inc.        
Schedule of Investments [Line Items]        
Cost 21,674 [3],[21] 19,284 [6],[22]    
Fair value 5,448 [7],[21] 8,990 [8],[22]    
BLI Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost [3] 15,186      
Fair value [7] 15,186      
Boccella Precast Products LLC        
Schedule of Investments [Line Items]        
Cost [6]   2,512    
Fair value [8]   3,076    
Buca C, LLC        
Schedule of Investments [Line Items]        
Cost 17,026 [3] 16,914 [6]    
Fair value 0 [7] 0 [8]    
Career Team Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 26,909 [3] 26,672 [6]    
Fair value 26,909 [7] 26,876 [8]    
CenterPeak Holdings, LLC        
Schedule of Investments [Line Items]        
Cost [6]   30,532    
Fair value [8]   51,247    
CGMS Parent LLC        
Schedule of Investments [Line Items]        
Cost 34,293 [3] 34,715 [6]    
Fair value 34,293 [7] 34,715 [8]    
Connect Telecommunications Solutions Holdings, Inc.        
Schedule of Investments [Line Items]        
Cost 35,174 [3],[17],[23] 36,749 [6],[19],[24]    
Fair value 33,738 [7],[17],[23] 36,749 [8],[19],[24]    
DMA Industries, LLC        
Schedule of Investments [Line Items]        
Cost 27,517 [3] 23,008 [6]    
Fair value 42,817 [7] 27,958 [8]    
Dos Rios Partners        
Schedule of Investments [Line Items]        
Cost 7,768 [3],[17],[18] 7,947 [6],[19],[20]    
Fair value 9,003 [7],[17],[18] 10,576 [8],[19],[20]    
FCC Intermediate Holdco, LLC        
Schedule of Investments [Line Items]        
Cost 31,814 [3] 32,368 [6]    
Fair value 43,130 [7] 46,300 [8]    
Freeport Financial Funds        
Schedule of Investments [Line Items]        
Cost 2,073 [3],[17],[18] 3,008 [6],[19],[20]    
Fair value 556 [7],[17],[18] 1,793 [8],[19],[20]    
FRG AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 10,909 [3] 13,883 [6]    
Fair value 10,909 [7] 13,883 [8]    
GFG Group, LLC        
Schedule of Investments [Line Items]        
Cost 18,965 [3] 18,950 [6]    
Fair value 27,233 [7] 24,993 [8]    
Gulf Manufacturing, LLC        
Schedule of Investments [Line Items]        
Cost 47,940 [3],[17] 42,697 [6],[19],[24]    
Fair value 52,684 [7],[17] 49,992 [8],[19],[24]    
Harris Preston Fund Investments        
Schedule of Investments [Line Items]        
Cost [3],[17],[18] 9,741      
Fair value [7],[17],[18] 14,883      
Hawk Ridge Systems, LLC        
Schedule of Investments [Line Items]        
Cost 60,227 [3] 51,475 [6]    
Fair value 85,616 [7] 76,165 [8]    
Houston Plating and Coatings, LLC        
Schedule of Investments [Line Items]        
Cost 5,527 [3] 5,352 [6]    
Fair value 6,390 [7] 6,720 [8]    
Infinity X1 Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 15,322 [3] 19,657 [6]    
Fair value 32,579 [7] 23,309 [8]    
Integral Energy Services        
Schedule of Investments [Line Items]        
Cost 14,074 [3],[15] 14,205 [6],[16]    
Fair value 13,190 [7],[15] 13,216 [8],[16]    
Iron-Main Investments, LLC        
Schedule of Investments [Line Items]        
Cost 54,758 [3] 46,987 [6]    
Fair value 55,601 [7] 47,250 [8]    
ITA Holdings Group, LLC        
Schedule of Investments [Line Items]        
Cost 23,345 [3] 19,393 [6]    
Fair value 33,600 [7] 33,360 [8]    
KMS, LLC        
Schedule of Investments [Line Items]        
Cost 6,746 [3],[15] 7,003 [6],[16]    
Fair value 8,174 [7],[15] 8,383 [8],[16]    
Mills Fleet Farm Group, LLC        
Schedule of Investments [Line Items]        
Cost 20,740 [3],[15] 19,578 [6],[16]    
Fair value 19,121 [7],[15] 17,017 [8],[16]    
MoneyThumb Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost 8,795 [3] 10,214 [6]    
Fair value 10,782 [7] 10,608 [8]    
Nearshore AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 26,910 [3] 26,863 [6]    
Fair value 27,650 [7] 26,863 [8]    
OnAsset Intelligence, Inc.        
Schedule of Investments [Line Items]        
Cost 12,683 [3] 12,683 [6]    
Fair value 5,149 [7] 1,239 [8]    
RA Outdoors LLC        
Schedule of Investments [Line Items]        
Cost 18,740 [3],[15] 16,414 [6],[16]    
Fair value 14,440 [7],[15] 13,537 [8],[16]    
Revenue Recovery Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 6,439 [3] 7,671 [6]    
Fair value 7,810 [7] 7,671 [8]    
RFG AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 65,723 [3] 53,026 [6]    
Fair value 70,973 [7] 54,396 [8]    
SI East, LLC        
Schedule of Investments [Line Items]        
Cost 70,031 [3] 70,533 [6]    
Fair value 81,576 [7] 86,290 [8]    
Slick Innovations, LLC        
Schedule of Investments [Line Items]        
Cost 20,358 [3] 24,451 [6]    
Fair value 23,960 [7] 26,840 [8]    
Specialized Aviation Holdings, LLC        
Schedule of Investments [Line Items]        
Cost [6]   43,362    
Fair value [8]   43,362    
Student Resource Center, LLC        
Schedule of Investments [Line Items]        
Cost 5,117 [3],[15] 5,106 [6],[16]    
Fair value 2,090 [7],[15] 2,218 [8],[16]    
The Affiliati Network, LLC        
Schedule of Investments [Line Items]        
Cost 6,713 [3] 6,713 [6]    
Fair value 6,713 [7] 6,713 [8]    
UniTek Global Services, Inc.        
Schedule of Investments [Line Items]        
Cost 20,007 [3],[21] 20,007 [6],[22]    
Fair value 11,208 [7],[21] 9,388 [8],[22]    
Urgent DSO LLC        
Schedule of Investments [Line Items]        
Cost 13,371 [3] 13,357 [6]    
Fair value 9,267 [7] 13,028 [8]    
World Micro Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 12,393 [3] 13,693 [6]    
Fair value 12,393 [7] 13,693 [8]    
Adams Publishing Group, LLC        
Schedule of Investments [Line Items]        
Cost 25,906 [3],[15] 25,234 [6],[16]    
Fair value 25,915 [7],[15] 25,142 [8],[16]    
AGS American Glass Services Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost 12,049 [3],[15] 10,578 [6],[16]    
Fair value 12,012 [7],[15] 10,474 [8],[16]    
Airo Purchaser, Inc.        
Schedule of Investments [Line Items]        
Cost 31,189 [3],[15] 28,578 [6],[16]    
Fair value 31,738 [7],[15] 28,695 [8],[16]    
American Health Staffing Group, Inc.        
Schedule of Investments [Line Items]        
Cost 5,100 [3],[15] 5,587 [6],[16]    
Fair value 5,106 [7],[15] 5,598 [8],[16]    
ArborWorks, LLC        
Schedule of Investments [Line Items]        
Cost 29,386 [3],[15] 27,456 [6],[16]    
Fair value 32,967 [7],[15] 29,821 [8],[16]    
ATS Operating, LLC        
Schedule of Investments [Line Items]        
Cost 15,439 [3],[15] 15,777 [6],[16]    
Fair value 15,860 [7],[15] 16,090 [8],[16]    
Auria Space, LLC        
Schedule of Investments [Line Items]        
Cost 119,217 [3],[15] 55,696 [6],[16]    
Fair value 120,706 [7],[15] 55,696 [8],[16]    
AVEX Aviation Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 23,606 [3],[15] 23,879 [6],[16]    
Fair value 24,689 [7],[15] 24,270 [8],[16]    
Behavior Development Group Holdings        
Schedule of Investments [Line Items]        
Cost 11,186 [3],[15] 9,732 [6],[16]    
Fair value 10,911 [7],[15] 9,732 [8],[16]    
Berry Aviation, Inc.        
Schedule of Investments [Line Items]        
Cost [6],[16]   286    
Fair value [8],[16]   0    
Bluestem Brands, Inc.        
Schedule of Investments [Line Items]        
Cost 7,739 [3],[21] 7,907 [6],[22]    
Fair value 338 [7],[21] 421 [8],[22]    
B-O-F Corporation        
Schedule of Investments [Line Items]        
Cost 8,019 [3],[15] 7,996 [6],[16]    
Fair value 7,937 [7],[15] 8,056 [8],[16]    
Bond Brand Loyalty ULC        
Schedule of Investments [Line Items]        
Cost 14,415 [3],[15],[17],[23] 14,933 [6],[16],[19],[24]    
Fair value 14,619 [7],[15],[17],[23] 15,071 [8],[16],[19],[24]    
BP Loenbro Holdings Inc.        
Schedule of Investments [Line Items]        
Cost [6],[16]   58,750    
Fair value [8],[16]   66,822    
Brainworks Software, LLC        
Schedule of Investments [Line Items]        
Cost 7,817 [3],[15] 7,817 [6],[16]    
Fair value 0 [7],[15] 0 [8],[16]    
Brightwood Capital Fund Investments        
Schedule of Investments [Line Items]        
Cost 12,061 [3],[17],[18] 13,085 [6],[19],[20]    
Fair value 9,790 [7],[17],[18] 11,062 [8],[19],[20]    
Channel Partners Intermediateco, LLC        
Schedule of Investments [Line Items]        
Cost 54,273 [3],[15] 49,512 [6],[16]    
Fair value 54,423 [7],[15] 49,820 [8],[16]    
Computer Data Source, LLC        
Schedule of Investments [Line Items]        
Cost 20,640 [3],[15] 30,167 [6],[16]    
Fair value 20,640 [7],[15] 28,745 [8],[16]    
Core Transformers        
Schedule of Investments [Line Items]        
Cost [6],[16]   6,660    
Fair value [8],[16]   6,660    
Coregistics Buyer LLC        
Schedule of Investments [Line Items]        
Cost 49,956 [3],[15],[17],[23] 50,180 [6],[16],[19],[24]    
Fair value 49,161 [7],[15],[17],[23] 50,807 [8],[16],[19],[24]    
CoreStack, Inc.        
Schedule of Investments [Line Items]        
Cost [3],[15] 14,540      
Fair value [7],[15] 14,540      
CQ Fluency, LLC        
Schedule of Investments [Line Items]        
Cost 9,766 [3],[15] 10,105 [6],[16]    
Fair value 9,830 [7],[15] 10,238 [8],[16]    
CRC Evans USA Bidco, Inc.        
Schedule of Investments [Line Items]        
Cost 22,803 [3],[15],[17],[23] 30,365 [6],[16],[19],[24]    
Fair value 23,325 [7],[15],[17],[23] 30,862 [8],[16],[19],[24]    
Creative Foam Corporation        
Schedule of Investments [Line Items]        
Cost 93,398 [3],[15] 93,764 [6],[16]    
Fair value 93,861 [7],[15] 94,890 [8],[16]    
Dalton US Inc.        
Schedule of Investments [Line Items]        
Cost [3],[15] 761      
Fair value [7],[15] 650      
DTE Enterprises, LLC        
Schedule of Investments [Line Items]        
Cost [6],[16]   2,092    
Fair value [8],[16]   0    
Dynamic Communities, LLC        
Schedule of Investments [Line Items]        
Cost 5,256 [3],[15] 4,894 [6],[16]    
Fair value 5,468 [7],[15] 5,185 [8],[16]    
Electro Technical Industries, LLC        
Schedule of Investments [Line Items]        
Cost [6],[16]   50,627    
Fair value [8],[16]   52,227    
EnCap Energy Fund Investments        
Schedule of Investments [Line Items]        
Cost 28,517 [3],[17],[18] 28,709 [6],[19],[20]    
Fair value 16,150 [7],[17],[18] 15,558 [8],[19],[20]    
Escalent, Inc.        
Schedule of Investments [Line Items]        
Cost 26,847 [3],[15] 27,072 [6],[16]    
Fair value 27,316 [7],[15] 27,781 [8],[16]    
Event Holdco, LLC        
Schedule of Investments [Line Items]        
Cost 51,287 [3],[15] 51,633 [6],[16]    
Fair value 51,312 [7],[15] 51,727 [8],[16]    
Fuse, LLC        
Schedule of Investments [Line Items]        
Cost [6],[22]   2,066    
Fair value [8],[22]   323    
Garyline, LLC        
Schedule of Investments [Line Items]        
Cost 30,367 [3],[15] 28,838 [6],[16]    
Fair value 30,380 [7],[15] 29,056 [8],[16]    
GradeEight Corp.        
Schedule of Investments [Line Items]        
Cost 35,484 [3],[15] 36,849 [6],[16]    
Fair value 35,564 [7],[15] 36,288 [8],[16]    
GS HVAM Intermediate, LLC        
Schedule of Investments [Line Items]        
Cost 22,557 [3],[15] 23,515 [6],[16]    
Fair value 21,389 [7],[15] 23,619 [8],[16]    
GULF PACIFIC ACQUISITION, LLC        
Schedule of Investments [Line Items]        
Cost 4,117 [3],[15] 4,232 [6],[16]    
Fair value 3,761 [7],[15] 3,959 [8],[16]    
Harris Preston Fund Investments        
Schedule of Investments [Line Items]        
Cost 2,678 [3],[17],[18] 8,708 [6],[19],[20]    
Fair value 3,148 [7],[17],[18] 12,805 [8],[19],[20]    
HDC/HW Intermediate Holdings        
Schedule of Investments [Line Items]        
Cost 3,228 [3],[15] 3,270 [6],[16]    
Fair value 952 [7],[15] 2,272 [8],[16]    
Hornblower Sub, LLC        
Schedule of Investments [Line Items]        
Cost 32,958 [3],[15] 37,071 [6],[16]    
Fair value 33,108 [7],[15] 36,860 [8],[16]    
Horwitz Holdings, LLC        
Schedule of Investments [Line Items]        
Cost [3],[15] 96,095      
Fair value [7],[15] 95,985      
IG Parent Corporation        
Schedule of Investments [Line Items]        
Cost 14,841 [3],[21] 14,884 [6],[22]    
Fair value 14,909 [7],[21] 14,980 [8],[22]    
Ignite Visibility LLC        
Schedule of Investments [Line Items]        
Cost 9,414 [3],[15] 9,378 [6],[16]    
Fair value 9,518 [7],[15] 9,378 [8],[16]    
Implus Footcare, LLC        
Schedule of Investments [Line Items]        
Cost 12,442 [3],[15] 12,049 [6],[16]    
Fair value 12,452 [7],[15] 11,279 [8],[16]    
Insight Borrower Corporation        
Schedule of Investments [Line Items]        
Cost 15,960 [3],[15] 15,922 [6],[16]    
Fair value 13,046 [7],[15] 14,751 [8],[16]    
Inspire Aesthetics Management, LLC        
Schedule of Investments [Line Items]        
Cost 11,869 [3],[15] 11,782 [6],[16]    
Fair value 11,032 [7],[15] 10,887 [8],[16]    
Interface Security Systems, L.L.C        
Schedule of Investments [Line Items]        
Cost 9,889 [3],[15] 9,629 [6],[16]    
Fair value 2,433 [7],[15] 2,078 [8],[16]    
Invincible Boat Company, LLC.        
Schedule of Investments [Line Items]        
Cost 18,323 [3],[15] 18,209 [6],[16]    
Fair value 11,447 [7],[15] 16,566 [8],[16]    
Isagenix International, LLC        
Schedule of Investments [Line Items]        
Cost 2,819 [3],[21] 3,016 [6],[22]    
Fair value 458 [7],[21] 458 [8],[22]    
Island Pump and Tank, LLC        
Schedule of Investments [Line Items]        
Cost 7,299 [3],[15] 6,704 [6],[16]    
Fair value 6,087 [7],[15] 6,587 [8],[16]    
Jackmont Hospitality, Inc.        
Schedule of Investments [Line Items]        
Cost 3,777 [3],[15] 3,865 [6],[16]    
Fair value 4,319 [7],[15] 4,531 [8],[16]    
Joerns Healthcare, LLC        
Schedule of Investments [Line Items]        
Cost 2,910 [3],[21] 3,402 [6],[22]    
Fair value 2,647 [7],[21] 3,552 [8],[22]    
Logix Acquisition Company, LLC        
Schedule of Investments [Line Items]        
Cost 48,446 [3],[15] 45,738 [6],[16]    
Fair value 48,871 [7],[15] 46,339 [8],[16]    
MCT Purchaserco Holding Inc.        
Schedule of Investments [Line Items]        
Cost 51,250 [3],[15],[17],[23] 46,488 [6],[16],[19],[24]    
Fair value 51,776 [7],[15],[17],[23] 46,488 [8],[16],[19],[24]    
Microbe Formulas, LLC        
Schedule of Investments [Line Items]        
Cost 21,443 [3],[15] 24,672 [6],[16]    
Fair value 21,566 [7],[15] 24,882 [8],[16]    
Mini Melts of America, LLC        
Schedule of Investments [Line Items]        
Cost 12,546 [3],[15] 12,736 [6],[16]    
Fair value 11,553 [7],[15] 12,099 [8],[16]    
Mission Critical Group        
Schedule of Investments [Line Items]        
Cost 117,439 [3],[15] 80,284 [6],[16]    
Fair value 159,680 [7],[15] 96,131 [8],[16]    
MonitorUS Holding, LLC        
Schedule of Investments [Line Items]        
Cost 31,140 [3],[15],[17],[23] 34,966 [6],[16],[19],[24]    
Fair value 31,059 [7],[15],[17],[23] 36,781 [8],[16],[19],[24]    
Nexus Power Enterprises, LLC        
Schedule of Investments [Line Items]        
Cost [3],[15] 36,030      
Fair value [7],[15] 36,030      
Obra Capital, Inc.        
Schedule of Investments [Line Items]        
Cost 28,343 [3],[15] 28,621 [6],[16]    
Fair value 29,080 [7],[15] 29,241 [8],[16]    
OnPoint Industrial Services, LLC        
Schedule of Investments [Line Items]        
Cost 6,202 [3],[15] 5,200 [6],[16]    
Fair value 6,261 [7],[15] 5,237 [8],[16]    
PavCon LLC        
Schedule of Investments [Line Items]        
Cost [3],[15] 10,560      
Fair value [7],[15] 10,744      
PrimeFlight Aviation Services        
Schedule of Investments [Line Items]        
Cost 27,283 [3],[15],[17] 15,927 [6],[16],[19]    
Fair value 27,570 [7],[15],[17] 16,160 [8],[16],[19]    
Pro-Max Restoration & Paint, LLC        
Schedule of Investments [Line Items]        
Cost [3],[15] 21,323      
Fair value [7],[15] 21,323      
Resodyn, LLC        
Schedule of Investments [Line Items]        
Cost [3],[15] 19,000      
Fair value [7],[15] 19,000      
Richardson Sales Solutions        
Schedule of Investments [Line Items]        
Cost 51,810 [3],[15] 55,120 [6],[16]    
Fair value 52,470 [7],[15] 56,066 [8],[16]    
Roof Opco, LLC        
Schedule of Investments [Line Items]        
Cost 8,052 [3],[15] 6,718 [6],[16]    
Fair value 5,827 [7],[15] 4,819 [8],[16]    
Royal Cup Inc.        
Schedule of Investments [Line Items]        
Cost [6],[16]   55,671    
Fair value [8],[16]   55,671    
Rug Doctor, LLC.        
Schedule of Investments [Line Items]        
Cost 7,702 [3],[15] 10,457 [6],[16]    
Fair value 7,765 [7],[15] 10,552 [8],[16]    
South Coast Terminals Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 62,511 [3],[15] 64,269 [6],[16]    
Fair value 63,252 [7],[15] 64,808 [8],[16]    
SPAU Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 18,431 [3],[15] 15,906 [6],[16]    
Fair value 18,602 [7],[15] 16,039 [8],[16]    
TEC Services, LLC        
Schedule of Investments [Line Items]        
Cost 31,401 [3],[15] 31,500 [6],[16]    
Fair value 31,705 [7],[15] 31,770 [8],[16]    
Titan Meter Midco Corp.        
Schedule of Investments [Line Items]        
Cost 45,860 [3],[15] 44,544 [6],[16]    
Fair value 46,812 [7],[15] 45,725 [8],[16]    
UBM AcquireCo LLC        
Schedule of Investments [Line Items]        
Cost 4,575 [3],[21] 2,631 [6],[22]    
Fair value 4,259 [7],[21] 3,998 [8],[22]    
UPS Intermediate, LLC        
Schedule of Investments [Line Items]        
Cost 59,927 [3],[15] 43,740 [6],[16]    
Fair value 60,659 [7],[15] 44,102 [8],[16]    
U.S. TelePacific Corp.        
Schedule of Investments [Line Items]        
Cost 65,892 [3] 50,341 [6]    
Fair value 65,072 [7] 50,341 [8]    
UserZoom Technologies, Inc.        
Schedule of Investments [Line Items]        
Cost [3],[15] 4,317      
Fair value [7],[15] 3,742      
Vitesse Systems        
Schedule of Investments [Line Items]        
Cost [6],[16]   48,631    
Fair value [8],[16]   49,377    
Wash & Wax Systems LLC        
Schedule of Investments [Line Items]        
Cost 17,686 [3],[15] 16,631 [6],[16]    
Fair value 14,003 [7],[15] 14,741 [8],[16]    
Watterson Brands, LLC        
Schedule of Investments [Line Items]        
Cost 18,320 [3],[15] 32,468 [6],[16]    
Fair value 17,665 [7],[15] 22,233 [8],[16]    
WECS Group, LLC        
Schedule of Investments [Line Items]        
Cost [3],[15] 47,597      
Fair value [7],[15] 47,597      
Winter Services LLC        
Schedule of Investments [Line Items]        
Cost 16,967 [3],[15] 20,215 [6],[16]    
Fair value 17,243 [7],[15] 20,354 [8],[16]    
Xenon Arc, Inc.        
Schedule of Investments [Line Items]        
Cost 70,147 [3],[15] 70,534 [6],[16]    
Fair value 70,627 [7],[15] 71,179 [8],[16]    
ZRG Partners, LLC        
Schedule of Investments [Line Items]        
Cost 79,726 [3],[15] 70,277 [6],[16]    
Fair value 80,774 [7],[15] $ 71,402 [8],[16]    
Midstream Valve Partners, LLC        
Schedule of Investments [Line Items]        
Cost [3] 39,005      
Fair value [7] $ 39,005      
Investment, Identifier [Axis]: 2717 MH, L.P. | LP Interests (2717 GRE-LP, L.P.)        
Schedule of Investments [Line Items]        
Fair value     441 441
Investment, Identifier [Axis]: 2717 MH, L.P. | LP Interests (2717 HPP-MS, L.P.)        
Schedule of Investments [Line Items]        
Fair value     447 383
Investment, Identifier [Axis]: 2717 MH, L.P. | LP Interests (2717 MH, L.P.)        
Schedule of Investments [Line Items]        
Fair value     1,795 8,818
Investment, Identifier [Axis]: 423 HAR, LP | LP Interests (423 HAR, L.P.)        
Schedule of Investments [Line Items]        
Fair value     1,226 1,226
Investment, Identifier [Axis]: AAC Holdings, Inc. | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 654,743 [11],[21] 654,743 [12],[22]    
Cost $ 3,148 [3],[11],[21] $ 3,148 [6],[12],[22]    
Fair value $ 0 [7],[11],[21] $ 0 [8],[12],[22] 0 0
Investment, Identifier [Axis]: AAC Holdings, Inc. | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 12,621,635 [11],[21] 12,621,635 [12],[22]    
Cost $ 8,520 [3],[11],[21] $ 8,520 [6],[12],[22]    
Fair value $ 0 [7],[11],[21] $ 2,080 [8],[12],[22] 6,050 0
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 21.00% [11],[21] 20.00% [12],[22]    
PIK Rate 21.00% [11],[21],[25] 20.00% [12],[22],[26]    
Principal $ 277 [3],[11],[21] $ 895 [6],[12],[22]    
Cost 194 [3],[11],[21] 895 [6],[12],[22]    
Fair value $ 194 [7],[11],[21] 895 [8],[12],[22] 0 609
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 20.00%      
PIK Rate 20.00%      
Fair value $ 1,040 895    
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 20.00%      
PIK Rate 20.00%      
Fair value $ 619 2,756    
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 20.00%      
PIK Rate 20.00%      
Fair value $ 619 2,756    
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 21.00%      
PIK Rate 21.00%      
Fair value $ 1,204 503    
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Total Rate 21.00%      
PIK Rate 21.00%      
Fair value $ 1,772 0    
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 1.6        
Schedule of Investments [Line Items]        
Total Rate 21.00%      
PIK Rate 21.00%      
Fair value $ 194 $ 0    
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 21.00% [11],[21] 21.00% [12],[22]    
PIK Rate 21.00% [11],[21],[25] 21.00% [12],[22],[26]    
Principal $ 1,772 [3],[11],[21] $ 513 [6],[12],[22]    
Cost 1,447 [3],[11],[21] 503 [6],[12],[22]    
Fair value $ 1,772 [7],[11],[21] $ 503 [8],[12],[22] $ 0 17,365
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 21.00% [11],[21] 20.00% [12],[22],[27] 10.00%  
PIK Rate 21.00% [11],[21],[25] 20.00% [12],[22],[26],[27] 10.00%  
Principal $ 1,204 [3],[11],[21] $ 3,109 [6],[12],[22],[27]    
Cost 1,107 [3],[11],[21] 3,109 [6],[12],[22],[27]    
Fair value $ 1,204 [7],[11],[21] $ 2,756 [8],[12],[22],[27] $ 3,109 0
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 20.00% [11],[21] 20.00% [12],[22],[27] 12.00%  
PIK Rate 20.00% [11],[21],[25] 20.00% [12],[22],[26],[27] 12.00%  
Principal $ 1,040 [3],[11],[21] $ 3,109 [6],[12],[22],[27]    
Cost 1,040 [3],[11],[21] 3,109 [6],[12],[22],[27]    
Fair value $ 1,040 [7],[11],[21] $ 2,756 [8],[12],[22],[27] $ 3,109 0
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 20.00% [11],[21],[28]   10.00%  
PIK Rate 20.00% [11],[21],[25],[28]   10.00%  
Principal [3],[11],[21],[28] $ 3,109      
Cost [3],[11],[21],[28] 3,109      
Fair value $ 619 [7],[11],[21],[28]   $ 814 0
Investment, Identifier [Axis]: AAC Holdings, Inc. | Secured Debt 6        
Schedule of Investments [Line Items]        
Total Rate [11],[21],[28] 20.00%      
PIK Rate [11],[21],[25],[28] 20.00%      
Principal [3],[11],[21],[28] $ 3,109      
Cost [3],[11],[21],[28] 3,109      
Fair value [7],[11],[21],[28] $ 619      
Investment, Identifier [Axis]: AAC Holdings, Inc. | Warrants        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: AGS American Glass Services Acquisition, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 7,292      
Cost [3],[14],[15] $ 729      
Fair value [7],[14],[15] $ 660      
Investment, Identifier [Axis]: AGS American Glass Services Acquisition, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16]   7,292    
Cost [6],[13],[16]   $ 729    
Fair value [8],[13],[16]   $ 729    
Investment, Identifier [Axis]: AGS American Glass Services Acquisition, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.50% [14],[15],[29],[30],[31] 5.50% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (30) [3],[14],[15],[30],[31] (35) [6],[13],[16],[33],[34]    
Fair value $ (30) [7],[14],[15],[30],[31] $ (35) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: AGS American Glass Services Acquisition, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.45%      
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[33],[34]    
Principal $ 2,355 [3],[14],[15],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 2,320 [3],[14],[15],[31] (20) [6],[13],[16],[33],[34]    
Fair value $ 2,320 [7],[14],[15],[31] $ (20) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: AGS American Glass Services Acquisition, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.32% [14],[15],[31] 9.22% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
Principal $ 9,139 [3],[14],[15],[31] $ 10,042 [6],[13],[16],[34]    
Cost 9,030 [3],[14],[15],[31] 9,904 [6],[13],[16],[34]    
Fair value $ 9,062 [7],[14],[15],[31] $ 9,800 [8],[13],[16],[34]    
Investment, Identifier [Axis]: AMEREQUIP LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 235 [14],[15],[35] 235 [13],[16],[36]    
Cost $ 1,844 [3],[14],[15],[35] $ 1,844 [6],[13],[16],[36]    
Fair value 0 [7],[14],[15],[35] $ 0 [8],[13],[16],[36]    
Investment, Identifier [Axis]: ASC Interests, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [10]   1,500    
Cost [6],[10]   $ 1,500    
Fair value 0 $ 0 [8],[10] 0 0
Investment, Identifier [Axis]: ASC Interests, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [10]   178    
Cost [6],[10]   $ 178    
Fair value 0 $ 0 [8],[10] $ 0 0
Investment, Identifier [Axis]: ASC Interests, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   13.00% [10],[37] 13.00%  
Principal [6],[10],[37]   $ 400    
Cost [6],[10],[37]   400    
Fair value 0 $ 400 [8],[10],[37] $ 400 400
Investment, Identifier [Axis]: ASC Interests, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   13.00% [10],[37] 13.00%  
Principal [6],[10],[37]   $ 1,533    
Cost [6],[10],[37]   1,533    
Fair value $ 0 $ 1,502 [8],[10],[37] $ 1,363 1,598
Investment, Identifier [Axis]: ATS Operating, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 720,000 [14],[15] 720,000 [13],[16]    
Cost $ 720 [3],[14],[15] $ 720 [6],[13],[16]    
Fair value $ 1,100 [7],[14],[15] $ 970 [8],[13],[16]    
Investment, Identifier [Axis]: ATS Operating, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.99% [14],[15],[31] 10.22% [13],[16],[34],[38]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34],[38]    
Principal $ 1,440 [3],[14],[15],[31] $ 1,800 [6],[13],[16],[34],[38]    
Cost 1,399 [3],[14],[15],[31] 1,737 [6],[13],[16],[34],[38]    
Fair value $ 1,440 [7],[14],[15],[31] $ 1,800 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: ATS Operating, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 8.99% [14],[15],[31] 9.25% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 6,660 [3],[14],[15],[31] $ 6,660 [6],[13],[16],[34]    
Cost 6,660 [3],[14],[15],[31] 6,660 [6],[13],[16],[34]    
Fair value $ 6,660 [7],[14],[15],[31] $ 6,660 [8],[13],[16],[34]    
Investment, Identifier [Axis]: ATS Operating, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.99% [14],[15],[31] 11.25% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
Principal $ 6,660 [3],[14],[15],[31] $ 6,660 [6],[13],[16],[34]    
Cost 6,660 [3],[14],[15],[31] 6,660 [6],[13],[16],[34]    
Fair value $ 6,660 [7],[14],[15],[31] $ 6,660 [8],[13],[16],[34]    
Investment, Identifier [Axis]: ATS Workholding, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: ATS Workholding, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     0 113
Investment, Identifier [Axis]: ATS Workholding, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 143
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 984 [14],[15] 984 [13],[16],[36]    
Cost $ 934 [3],[14],[15] $ 934 [6],[13],[16],[36]    
Fair value $ 1,768 [7],[14],[15] $ 920 [8],[13],[16],[36]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.25% [14],[15],[29],[30],[31] 7.25% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (40) [3],[14],[15],[30],[31] (63) [6],[13],[16],[33],[34]    
Fair value $ (40) [7],[14],[15],[30],[31] $ (63) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   11.09%    
Spread (as a percent) 7.25% [14],[15],[29],[30],[31] 7.25% [13],[16],[32],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 23,451 [6],[13],[16],[34]    
Cost (24) [3],[14],[15],[30],[31] 23,046 [6],[13],[16],[34]    
Fair value $ (24) [7],[14],[15],[30],[31] $ 23,451 [8],[13],[16],[34]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 11.47%      
Spread (as a percent) 7.25% [14],[15],[29],[31] 7.25% [13],[16],[32],[33],[34]    
Principal $ 22,985 [3],[14],[15],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 22,736 [3],[14],[15],[31] (38) [6],[13],[16],[33],[34]    
Fair value $ 22,985 [7],[14],[15],[31] $ (38) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Adams Publishing Group, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14],[15],[31],[39] 11.00% [13],[16],[34],[40]    
Spread (as a percent) 8.00% [14],[15],[29],[31],[39] 7.00% [13],[16],[32],[34],[40]    
PIK Rate 1.00% [14],[15],[25],[31],[39] 1.00% [13],[16],[26],[34],[40]    
Principal $ 10,507 [3],[14],[15],[31],[39] $ 8,000 [6],[13],[16],[34],[40]    
Cost 10,507 [3],[14],[15],[31],[39] 8,000 [6],[13],[16],[34],[40]    
Fair value $ 10,507 [7],[14],[15],[31],[39] $ 7,965 [8],[13],[16],[34],[40]    
Investment, Identifier [Axis]: Adams Publishing Group, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14],[15],[31],[39] 11.00% [13],[16],[34],[40]    
Spread (as a percent) 8.00% [14],[15],[29],[31],[39] 7.00% [13],[16],[32],[34],[40]    
PIK Rate 1.00% [14],[15],[25],[31],[39] 1.00% [13],[16],[26],[34],[40]    
Principal $ 736 [3],[14],[15],[31],[39] $ 789 [6],[13],[16],[34],[40]    
Cost 731 [3],[14],[15],[31],[39] 775 [6],[13],[16],[34],[40]    
Fair value $ 736 [7],[14],[15],[31],[39] $ 775 [8],[13],[16],[34],[40]    
Investment, Identifier [Axis]: Adams Publishing Group, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14],[15],[31],[39] 11.00% [13],[16],[34],[40]    
Spread (as a percent) 8.00% [14],[15],[29],[31],[39] 7.00% [13],[16],[32],[34],[40]    
PIK Rate 1.00% [14],[15],[25],[31],[39] 1.00% [13],[16],[26],[34],[40]    
Principal $ 14,672 [3],[14],[15],[31],[39] $ 16,473 [6],[13],[16],[34],[40]    
Cost 14,668 [3],[14],[15],[31],[39] 16,459 [6],[13],[16],[34],[40]    
Fair value $ 14,672 [7],[14],[15],[31],[39] $ 16,402 [8],[13],[16],[34],[40]    
Investment, Identifier [Axis]: Airo Purchaser, Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,521 [14],[15] 1,521 [13],[16]    
Cost $ 1,521 [3],[14],[15] $ 1,521 [6],[13],[16]    
Fair value $ 1,650 [7],[14],[15] $ 1,521 [8],[13],[16]    
Investment, Identifier [Axis]: Airo Purchaser, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.25% [14],[15],[29],[30],[31] 5.25% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (53) [3],[14],[15],[30],[31] (63) [6],[13],[16],[33],[34]    
Fair value $ (53) [7],[14],[15],[30],[31] $ (63) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Airo Purchaser, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.09%      
Spread (as a percent) 5.25% [14],[15],[29],[31] 5.25% [13],[16],[32],[33],[34]    
Principal $ 2,753 [3],[14],[15],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 2,700 [3],[14],[15],[31] (32) [6],[13],[16],[33],[34]    
Fair value $ 2,753 [7],[14],[15],[31] $ (32) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Airo Purchaser, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.09% [14],[15],[31] 9.22% [13],[16],[34]    
Spread (as a percent) 5.25% [14],[15],[29],[31] 5.25% [13],[16],[32],[34]    
Principal $ 27,388 [3],[14],[15],[31] $ 27,595 [6],[13],[16],[34]    
Cost 27,021 [3],[14],[15],[31] 27,152 [6],[13],[16],[34]    
Fair value $ 27,388 [7],[14],[15],[31] $ 27,269 [8],[13],[16],[34]    
Investment, Identifier [Axis]: American Health Staffing Group, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.25% [14],[15],[29],[30],[31] 5.00% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (2) [3],[14],[15],[30],[31] (2) [6],[13],[16],[33],[34]    
Fair value $ (2) [7],[14],[15],[30],[31] $ (2) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: American Health Staffing Group, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.25% [14],[15],[31] 11.75% [13],[16],[34]    
Spread (as a percent) 5.25% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 5,108 [3],[14],[15],[31] $ 5,600 [6],[13],[16],[34]    
Cost 5,102 [3],[14],[15],[31] 5,589 [6],[13],[16],[34]    
Fair value $ 5,108 [7],[14],[15],[31] $ 5,600 [8],[13],[16],[34]    
Investment, Identifier [Axis]: American Nuts, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 26,638 [9],[15] 26,638 [10],[16]    
Cost $ 8,970 [3],[9],[15] $ 8,970 [6],[10],[16]    
Fair value $ 3,780 [7],[9],[15] $ 4,250 [8],[10],[16] $ 6,130 0
Investment, Identifier [Axis]: American Nuts, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.38% [9],[15],[31] 12.64% [10],[16],[34] 12.94%  
Spread (as a percent) 8.50% [9],[15],[29],[31] 8.50% [10],[16],[32],[34] 8.50%  
PIK Rate 12.38% [9],[15],[25],[31] 12.64% [10],[16],[26],[34] 12.94%  
Principal $ 331 [3],[9],[15],[31] $ 8,161 [6],[10],[16],[34]    
Cost 331 [3],[9],[15],[31] 8,161 [6],[10],[16],[34]    
Fair value $ 331 [7],[9],[15],[31] 8,161 [8],[10],[16],[34] $ 7,906 0
Investment, Identifier [Axis]: American Nuts, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 12.38%      
Spread (as a percent) 8.50%      
PIK Rate 12.38%      
Fair value $ 8,881 8,161    
Investment, Identifier [Axis]: American Nuts, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 12.38%      
Spread (as a percent) 8.50%      
PIK Rate 12.38%      
Fair value $ 7,657 6,582    
Investment, Identifier [Axis]: American Nuts, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 12.38%      
Spread (as a percent) 8.50%      
PIK Rate 12.38%      
Fair value $ 331 $ 0    
Investment, Identifier [Axis]: American Nuts, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.38% [9],[15],[31] 12.64% [10],[16],[34] 12.94%  
Spread (as a percent) 8.50% [9],[15],[29],[31] 8.50% [10],[16],[32],[34] 8.50%  
PIK Rate 12.38% [9],[15],[25],[31] 12.64% [10],[16],[26],[34] 12.94%  
Principal $ 8,949 [3],[9],[15],[31] $ 8,161 [6],[10],[16],[34]    
Cost 8,949 [3],[9],[15],[31] 8,161 [6],[10],[16],[34]    
Fair value $ 8,881 [7],[9],[15],[31] 6,582 [8],[10],[16],[34] $ 7,906 0
Investment, Identifier [Axis]: American Nuts, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [9],[15],[31] 12.38%      
Spread (as a percent) [9],[15],[29],[31] 8.50%      
PIK Rate [9],[15],[25],[31] 12.38%      
Principal [3],[9],[15],[31] $ 8,949      
Cost [3],[9],[15],[31] 8,949      
Fair value [7],[9],[15],[31] 7,657      
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period | Preferred Equity 1        
Schedule of Investments [Line Items]        
Fair value 0 (28,746) 0 (80,952)
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period | Preferred Equity 2        
Schedule of Investments [Line Items]        
Fair value $ 0 $ (22,233) 0 29,588
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,411 [9] 2,411 [10]    
Cost $ 2,387 [3],[9] $ 2,387 [6],[10]    
Fair value 6,110 [7],[9] 6,030 [8],[10] 0 0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value 520 120    
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Fair value $ 6,110 $ 6,030    
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 3,108 [9] 3,108 [10]    
Cost $ 3,200 [3],[9] $ 3,200 [6],[10]    
Fair value $ 520 [7],[9] $ 120 [8],[10] 5,570 5,300
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.25% [9] 13.75% [10]    
Principal $ 3,642 [3],[9] $ 3,895 [6],[10]    
Cost 3,616 [3],[9] 3,860 [6],[10]    
Fair value $ 3,616 [7],[9] $ 3,860 [8],[10]    
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     $ 0 0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     14.50%  
Fair value     $ 3,907 4,048
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 420 [9],[41] 420 [10],[42]    
Cost $ 316 [3],[9],[41] $ 316 [6],[10],[42]    
Fair value $ 0 [7],[9],[41] $ 0 [8],[10],[42] 0 0
Investment, Identifier [Axis]: ArborWorks, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,898 [14],[15] 3,898 [13],[16]    
Cost $ 234 [3],[14],[15] $ 234 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 0 [8],[13],[16]    
Investment, Identifier [Axis]: ArborWorks, LLC | Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 32,507 [14],[15] 32,507 [13],[16]    
Cost $ 14,060 [3],[14],[15] $ 14,060 [6],[13],[16]    
Fair value $ 17,875 [7],[14],[15] $ 16,659 [8],[13],[16]    
Investment, Identifier [Axis]: ArborWorks, LLC | Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 32,507 [14],[15] 32,507 [13],[16]    
Cost $ 0 [3],[14],[15] $ 0 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 0 [8],[13],[16]    
Investment, Identifier [Axis]: ArborWorks, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.00% [14],[15] 15.00% [13],[16]    
PIK Rate 15.00% [14],[15],[25] 15.00% [13],[16],[26]    
Principal $ 5,383 [3],[14],[15] $ 4,177 [6],[13],[16]    
Cost 5,383 [3],[14],[15] 4,177 [6],[13],[16]    
Fair value $ 5,383 [7],[14],[15] $ 4,177 [8],[13],[16]    
Investment, Identifier [Axis]: ArborWorks, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[15],[31] 10.34% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
PIK Rate 10.50% [14],[15],[25],[31] 10.34% [13],[16],[26],[34]    
Principal $ 9,709 [3],[14],[15],[31] $ 8,985 [6],[13],[16],[34]    
Cost 9,709 [3],[14],[15],[31] 8,985 [6],[13],[16],[34]    
Fair value $ 9,709 [7],[14],[15],[31] $ 8,985 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Archer Systems, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,387,832 [14],[15],[35] 1,387,832 [13],[16],[36]    
Cost $ 1,388 [3],[14],[15],[35] $ 1,388 [6],[13],[16],[36]    
Fair value $ 2,450 [7],[14],[15],[35] $ 2,450 [8],[13],[16],[36]    
Investment, Identifier [Axis]: Auria Space, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 562,714      
Cost [3],[14],[15] $ 3,040      
Fair value [7],[14],[15] $ 3,040      
Investment, Identifier [Axis]: Auria Space, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.75% [14],[15],[29],[30],[31] 5.00% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (143) [3],[14],[15],[30],[31] (168) [6],[13],[16],[33],[34]    
Fair value $ (143) [7],[14],[15],[30],[31] $ (168) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Auria Space, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.65%      
Spread (as a percent) 5.75% [14],[15],[29],[31] 5.00% [13],[16],[32],[33],[34]    
Principal $ 60,805 [3],[14],[15],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 60,033 [3],[14],[15],[31] (299) [6],[13],[16],[33],[34]    
Fair value $ 60,805 [7],[14],[15],[31] $ (299) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Auria Space, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.65% [14],[15],[31] 8.72% [13],[16],[34]    
Spread (as a percent) 5.75% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 57,004 [3],[14],[15],[31] $ 57,004 [6],[13],[16],[34]    
Cost 56,287 [3],[14],[15],[31] 56,163 [6],[13],[16],[34]    
Fair value $ 57,004 [7],[14],[15],[31] $ 56,163 [8],[13],[16],[34]    
Investment, Identifier [Axis]: B-O-F Corporation | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 248,718 [14],[15] 248,718 [13],[16]    
Cost $ 249 [3],[14],[15] $ 249 [6],[13],[16]    
Fair value $ 249 [7],[14],[15] $ 249 [8],[13],[16]    
Investment, Identifier [Axis]: B-O-F Corporation | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.75% [14],[15],[29],[30],[31] 5.75% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (14) [3],[14],[15],[30],[31] (17) [6],[13],[16],[33],[34]    
Fair value $ (14) [7],[14],[15],[30],[31] $ (17) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: B-O-F Corporation | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 8.48% [14],[15],[31] 8.74% [13],[16],[34]    
Spread (as a percent) 4.75% [14],[15],[29],[31] 4.75% [13],[16],[32],[34]    
Principal $ 3,938 [3],[14],[15],[31] $ 3,938 [6],[13],[16],[34]    
Cost 3,892 [3],[14],[15],[31] 3,882 [6],[13],[16],[34]    
Fair value $ 3,851 [7],[14],[15],[31] $ 3,912 [8],[13],[16],[34]    
Investment, Identifier [Axis]: B-O-F Corporation | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.48% [14],[15],[31] 10.74% [13],[16],[34]    
Spread (as a percent) 6.75% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 3,938 [3],[14],[15],[31] $ 3,938 [6],[13],[16],[34]    
Cost 3,892 [3],[14],[15],[31] 3,882 [6],[13],[16],[34]    
Fair value $ 3,851 [7],[14],[15],[31] $ 3,912 [8],[13],[16],[34]    
Investment, Identifier [Axis]: BDB Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 19,536,995 [9] 18,756,995 [10]    
Cost $ 19,537 [3],[9] $ 19,537 [6],[10]    
Fair value $ 5,190 [7],[9] $ 12,640 [8],[10] $ 16,060 18,920
Investment, Identifier [Axis]: BDB Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10] 12.00%  
Principal $ 3,612 [3],[9] $ 1,773 [6],[10]    
Cost 3,612 [3],[9] 1,773 [6],[10]    
Fair value $ 3,612 [7],[9] 1,773 [8],[10] $ 1,173 0
Investment, Identifier [Axis]: BLI Acquisition, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [11] 210,000      
Cost [3],[11] $ 2,100      
Fair value $ 2,100 [7],[11] 0    
Investment, Identifier [Axis]: BLI Acquisition, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [11] 14.00%      
Principal [3],[11] $ 13,200      
Cost [3],[11] 13,086      
Fair value $ 13,086 [7],[11] $ 0    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16]   2,583,963    
Cost [6],[13],[16]   $ 2,709    
Fair value [8],[13],[16]   $ 9,910    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34],[38]   9.75%    
Spread (as a percent) [13],[16],[32],[34],[38]   5.75%    
Principal [6],[13],[16],[34],[38]   $ 3,946    
Cost [6],[13],[16],[34],[38]   3,819    
Fair value [8],[13],[16],[34],[38]   $ 3,946    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.84%    
Spread (as a percent) [13],[16],[32],[34]   5.75%    
Principal [6],[13],[16],[34]   $ 2,984    
Cost [6],[13],[16],[34]   2,927    
Fair value [8],[13],[16],[34]   $ 2,984    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.75%    
Spread (as a percent) [13],[16],[32],[34]   5.75%    
Principal [6],[13],[16],[34]   $ 25,673    
Cost [6],[13],[16],[34]   25,349    
Fair value [8],[13],[16],[34]   $ 25,673    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.83%    
Spread (as a percent) [13],[16],[32],[34]   5.75%    
Principal [6],[13],[16],[34]   $ 9,410    
Cost [6],[13],[16],[34]   9,303    
Fair value [8],[13],[16],[34]   $ 9,410    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc. | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.84%    
Spread (as a percent) [13],[16],[32],[34]   5.75%    
Principal [6],[13],[16],[34]   $ 14,899    
Cost [6],[13],[16],[34]   14,643    
Fair value [8],[13],[16],[34]   $ 14,899    
Investment, Identifier [Axis]: Barfly Ventures, LLC | Member Units        
Schedule of Investments [Line Items]        
Fair value     $ 6,810 5,860
Investment, Identifier [Axis]: Barfly Ventures, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate     7.00%  
Fair value     $ 711 711
Investment, Identifier [Axis]: Batjer TopCo, LLC | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 4,073 [9],[35] 4,073 [10],[36]    
Cost $ 4,095 [3],[9],[35] $ 4,095 [6],[10],[36]    
Fair value 9,500 [7],[9],[35] 8,750 [8],[10],[36] 8,750 5,160
Investment, Identifier [Axis]: Batjer TopCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost (1) [3],[9],[30] (2) [6],[10],[33]    
Fair value 0 [7],[9],[30] 0 [8],[10],[33] (3) 446
Investment, Identifier [Axis]: Batjer TopCo, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Batjer TopCo, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
Fair value $ 9,608 9,945    
Investment, Identifier [Axis]: Batjer TopCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost 0 [3],[9],[30] 0 [6],[10],[33]    
Fair value $ 0 [7],[9],[30] $ 0 [8],[10],[33] $ 0 270
Investment, Identifier [Axis]: Batjer TopCo, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00% [9] 10.00% [10] 10.00%  
Principal $ 9,608 [3],[9] $ 9,945 [6],[10]    
Cost 9,599 [3],[9] 9,921 [6],[10]    
Fair value $ 9,608 [7],[9] $ 9,945 [8],[10] $ 9,917 10,529
Investment, Identifier [Axis]: Behavior Development Group Holdings | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 300 [14],[15] 300 [13],[16]    
Cost $ 300 [3],[14],[15] $ 300 [6],[13],[16]    
Fair value $ 240 [7],[14],[15] $ 300 [8],[13],[16]    
Investment, Identifier [Axis]: Behavior Development Group Holdings | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31],[43] 9.87%      
Spread (as a percent) 6.00% [14],[15],[29],[31],[43] 6.00% [13],[16],[32],[33],[34]    
Principal $ 1,500 [3],[14],[15],[31],[43] $ 0 [6],[13],[16],[33],[34]    
Cost 1,481 [3],[14],[15],[31],[43] (22) [6],[13],[16],[33],[34]    
Fair value $ 1,452 [7],[14],[15],[31],[43] $ (22) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Behavior Development Group Holdings | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31] 9.70% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
Principal $ 9,524 [3],[14],[15],[31] $ 9,596 [6],[13],[16],[34]    
Cost 9,405 [3],[14],[15],[31] 9,454 [6],[13],[16],[34]    
Fair value 9,219 [7],[14],[15],[31] $ 9,454 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Berry Aviation, Inc. | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16],[44]   286,109    
Cost [6],[13],[16],[44]   $ 286    
Fair value [8],[13],[16],[44]   $ 0    
Investment, Identifier [Axis]: Berry Aviation, Inc. | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16],[44]   122,416    
Cost [6],[13],[16],[44]   $ 0    
Fair value [8],[13],[16],[44]   $ 0    
Investment, Identifier [Axis]: Berry Aviation, Inc. | Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16],[44]   1,548,387    
Cost [6],[13],[16],[44]   $ 0    
Fair value [8],[13],[16],[44]   $ 0    
Investment, Identifier [Axis]: Bettercloud, Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [10],[16]   69    
Cost [6],[10],[16]   $ 16,890    
Fair value $ 0 $ 15,690 [8],[10],[16]    
Investment, Identifier [Axis]: Bettercloud, Inc. | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [10],[16],[34],[38]   12.07%    
Spread (as a percent) 10.77% 8.25% [10],[16],[32],[34],[38]    
PIK Rate [10],[16],[26],[34],[38]   12.07%    
Principal [6],[10],[16],[34],[38]   $ 6,017    
Cost [6],[10],[16],[34],[38]   6,017    
Fair value $ 0 $ 6,017 [8],[10],[16],[34],[38]    
Investment, Identifier [Axis]: Bluestem Brands, Inc. | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 723,184 [14],[21] 723,184 [13],[22]    
Cost $ 1 [3],[14],[21] $ 1 [6],[13],[22]    
Fair value $ 0 [7],[14],[21] $ 0 [8],[13],[22]    
Investment, Identifier [Axis]: Bluestem Brands, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.30% [14],[21],[28],[31],[45] 12.49% [13],[22],[27],[34]    
Spread (as a percent) 8.50% [14],[21],[28],[29],[31],[45] 8.50% [13],[22],[27],[32],[34]    
PIK Rate 11.30% [14],[21],[25],[28],[31],[45] 11.49% [13],[22],[26],[27],[34]    
Principal $ 185 [3],[14],[21],[28],[31],[45] $ 202 [6],[13],[22],[27],[34]    
Cost 109 [3],[14],[21],[28],[31],[45] 129 [6],[13],[22],[27],[34]    
Fair value $ 244 [7],[14],[21],[28],[31],[45] $ 239 [8],[13],[22],[27],[34]    
Investment, Identifier [Axis]: Bluestem Brands, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.50% [14],[21],[28],[31],[45] 14.25% [13],[22],[27],[34]    
Spread (as a percent) 7.50% [14],[21],[28],[29],[31],[45] 7.50% [13],[22],[27],[32],[34]    
PIK Rate 13.50% [14],[21],[25],[28],[31],[45] 13.25% [13],[22],[26],[27],[34]    
Principal $ 2,734 [3],[14],[21],[28],[31],[45] $ 2,780 [6],[13],[22],[27],[34]    
Cost 2,685 [3],[14],[21],[28],[31],[45] 2,780 [6],[13],[22],[27],[34]    
Fair value $ 94 [7],[14],[21],[28],[31],[45] $ 182 [8],[13],[22],[27],[34]    
Investment, Identifier [Axis]: Bluestem Brands, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.30% [14],[21],[28],[31],[45] 12.49% [13],[22],[27],[34]    
Spread (as a percent) 8.50% [14],[21],[28],[29],[31],[45] 8.50% [13],[22],[27],[32],[34]    
PIK Rate 11.30% [14],[21],[25],[28],[31],[45] 11.49% [13],[22],[26],[27],[34]    
Principal $ 4,183 [3],[14],[21],[28],[31],[45] $ 4,183 [6],[13],[22],[27],[34]    
Cost 3,908 [3],[14],[21],[28],[31],[45] 3,961 [6],[13],[22],[27],[34]    
Fair value $ 0 [7],[14],[21],[28],[31],[45] $ 0 [8],[13],[22],[27],[34]    
Investment, Identifier [Axis]: Bluestem Brands, Inc. | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 163,295 [14],[21],[41] 163,295 [13],[22],[42]    
Cost $ 1,036 [3],[14],[21],[41] $ 1,036 [6],[13],[22],[42]    
Fair value 0 [7],[14],[21],[41] $ 0 [8],[13],[22],[42]    
Investment, Identifier [Axis]: Boccella Precast Products LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [12],[36]   2,160,000    
Cost [6],[12],[36]   $ 2,256    
Fair value 0 $ 2,820 [8],[12],[36] $ 1,820 310
Investment, Identifier [Axis]: Boccella Precast Products LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   10.00% [12] 10.00%  
Principal [6],[12]   $ 256    
Cost [6],[12]   256    
Fair value $ 0 $ 256 [8],[12] $ 256 266
Investment, Identifier [Axis]: Bolder Panther Group, LLC | Class B Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 140,000 [9],[35] 140,000 [10],[36]    
Total Rate 8.00% [9],[35] 8.00% [10],[36] 8.00%  
Cost $ 14,000 [3],[9],[35] $ 14,000 [6],[10],[36]    
Fair value $ 32,100 [7],[9],[35] $ 31,190 [8],[10],[36] $ 31,190 30,520
Investment, Identifier [Axis]: Bolder Panther Group, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9],[31],[46] 11.10% [10],[34],[47]    
Spread (as a percent) 8.31% [9],[29],[31],[46] 7.22% [10],[32],[34],[47]    
Principal $ 101,046 [3],[9],[31],[46] $ 101,046 [6],[10],[34],[47]    
Cost 100,902 [3],[9],[31],[46] 100,803 [6],[10],[34],[47]    
Fair value $ 101,046 [7],[9],[31],[46] 101,046 [8],[10],[34],[47]    
Investment, Identifier [Axis]: Bolder Panther Group, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00%   11.57%  
Spread (as a percent) 8.31%   7.26%  
Fair value $ 101,046 101,046 $ 101,046 101,643
Investment, Identifier [Axis]: Bolder Panther Group, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     10.81%  
Spread (as a percent)     6.50%  
Fair value $ 0 $ 0 $ 3,000 0
Investment, Identifier [Axis]: Bolder Panther Group, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 571 [14],[15],[17],[23] 571 [13],[16],[19],[24]    
Cost $ 0 [3],[14],[15],[17],[23] $ 0 [6],[13],[16],[19],[24]    
Fair value $ 0 [7],[14],[15],[17],[23] $ 0 [8],[13],[16],[19],[24]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 571 [14],[15],[17],[23] 571 [13],[16],[19],[24]    
Cost $ 571 [3],[14],[15],[17],[23] $ 571 [6],[13],[16],[19],[24]    
Fair value $ 670 [7],[14],[15],[17],[23] $ 550 [8],[13],[16],[19],[24]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.63% [14],[15],[17],[23],[31] 9.89% [13],[16],[19],[24],[34]    
Spread (as a percent) 5.75% [14],[15],[17],[23],[29],[31] 5.75% [13],[16],[19],[24],[32],[34]    
Principal $ 143 [3],[14],[15],[17],[23],[31] $ 571 [6],[13],[16],[19],[24],[34]    
Cost 134 [3],[14],[15],[17],[23],[31] 557 [6],[13],[16],[19],[24],[34]    
Fair value $ 143 [7],[14],[15],[17],[23],[31] $ 571 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.63% [14],[15],[17],[23],[31] 9.59% [13],[16],[19],[24],[34]    
Spread (as a percent) 5.75% [14],[15],[17],[23],[29],[31] 5.75% [13],[16],[19],[24],[32],[34]    
Principal $ 1,382 [3],[14],[15],[17],[23],[31] $ 1,396 [6],[13],[16],[19],[24],[34]    
Cost 1,364 [3],[14],[15],[17],[23],[31] 1,369 [6],[13],[16],[19],[24],[34]    
Fair value $ 1,382 [7],[14],[15],[17],[23],[31] $ 1,396 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 8.63% [14],[15],[17],[23],[31] 8.89% [13],[16],[19],[24],[34]    
Spread (as a percent) 4.75% [14],[15],[17],[23],[29],[31] 4.75% [13],[16],[19],[24],[32],[34]    
Principal $ 6,212 [3],[14],[15],[17],[23],[31] $ 6,277 [6],[13],[16],[19],[24],[34]    
Cost 6,173 [3],[14],[15],[17],[23],[31] 6,218 [6],[13],[16],[19],[24],[34]    
Fair value $ 6,212 [7],[14],[15],[17],[23],[31] $ 6,277 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.63% [14],[15],[17],[23],[31] 10.89% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.75% [14],[15],[17],[23],[29],[31] 6.75% [13],[16],[19],[24],[32],[34]    
Principal $ 6,212 [3],[14],[15],[17],[23],[31] $ 6,277 [6],[13],[16],[19],[24],[34]    
Cost 6,173 [3],[14],[15],[17],[23],[31] 6,218 [6],[13],[16],[19],[24],[34]    
Fair value $ 6,212 [7],[14],[15],[17],[23],[31] $ 6,277 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Brainworks Software, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 14.25% [14],[15],[28],[31],[45] 14.75% [13],[16],[27],[34],[37]    
Spread (as a percent) 7.25% [14],[15],[28],[29],[31],[45] 7.25% [13],[16],[27],[32],[34],[37]    
Principal $ 761 [3],[14],[15],[28],[31],[45] $ 761 [6],[13],[16],[27],[34],[37]    
Cost 761 [3],[14],[15],[28],[31],[45] 761 [6],[13],[16],[27],[34],[37]    
Fair value $ 0 [7],[14],[15],[28],[31],[45] $ 0 [8],[13],[16],[27],[34],[37]    
Investment, Identifier [Axis]: Brainworks Software, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.25% [14],[15],[28],[31],[45] 14.75% [13],[16],[27],[34],[37]    
Spread (as a percent) 7.25% [14],[15],[28],[29],[31],[45] 7.25% [13],[16],[27],[32],[34],[37]    
Principal $ 7,056 [3],[14],[15],[28],[31],[45] $ 7,056 [6],[13],[16],[27],[34],[37]    
Cost 7,056 [3],[14],[15],[28],[31],[45] 7,056 [6],[13],[16],[27],[34],[37]    
Fair value $ 0 [7],[14],[15],[28],[31],[45] $ 0 [8],[13],[16],[27],[34],[37]    
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,950 [9],[35] 2,950 [10],[36]    
Cost $ 4,280 [3],[9],[35] $ 4,280 [6],[10],[36]    
Fair value 3,050 [7],[9],[35] 3,460 [8],[10],[36] 3,390 4,680
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value $ 3,050 3,460    
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Total Rate 15.00%      
PIK Rate 15.00%      
Fair value $ 373 $ 336    
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 312 [9],[35] 312 [10],[36]    
Total Rate 15.00% [9],[35] 15.00% [10],[36]    
PIK Rate 15.00% [9],[25],[35] 15.00% [10],[26],[36]    
Cost $ 373 [3],[9],[35] $ 336 [6],[10],[36]    
Fair value $ 373 [7],[9],[35] $ 336 [8],[10],[36] $ 324 0
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.79% [9],[31] 13.98% [10],[34] 14.41%  
Spread (as a percent) 10.00% [9],[29],[31] 10.00% [10],[32],[34] 10.00%  
Principal $ 5,056 [3],[9],[31] $ 5,016 [6],[10],[34]    
Cost 5,020 [3],[9],[31] 5,016 [6],[10],[34]    
Fair value $ 5,056 [7],[9],[31] $ 5,016 [8],[10],[34] $ 5,016 5,016
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 17,742 [9],[48] 17,742 [10],[44]    
Cost $ 1,000 [3],[9],[48] $ 1,000 [6],[10],[44]    
Fair value $ 0 [7],[9],[48] $ 0 [8],[10],[44] 0 0
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 82 [9],[41],[45] 82 [10],[42]    
Cost $ 2,132 [3],[9],[41],[45] $ 2,132 [6],[10],[42]    
Fair value 0 [7],[9],[41],[45] 0 [8],[10],[42]    
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation | Warrants 1        
Schedule of Investments [Line Items]        
Fair value 0 0 0 0
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation | Warrants 2        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: Brightwood Capital Fund Investments | LP Interests (Brightwood Capital Fund III, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 1.59% [14],[17],[18],[49] 1.59% [13],[19],[20],[50]    
Cost $ 4,898 [3],[14],[17],[18],[49] $ 4,983 [6],[13],[19],[20],[50]    
Fair value $ 2,607 [7],[14],[17],[18],[49] $ 2,692 [8],[13],[19],[20],[50]    
Investment, Identifier [Axis]: Brightwood Capital Fund Investments | LP Interests (Brightwood Capital Fund IV, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 0.59% [14],[17],[18],[35],[49] 0.59% [13],[19],[20],[36],[50]    
Cost $ 2,163 [3],[14],[17],[18],[35],[49] $ 3,202 [6],[13],[19],[20],[36],[50]    
Fair value $ 1,937 [7],[14],[17],[18],[35],[49] $ 3,224 [8],[13],[19],[20],[36],[50]    
Investment, Identifier [Axis]: Brightwood Capital Fund Investments | LP Interests (Brightwood Capital Fund V, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 0.72% [14],[17],[18],[35],[49] 0.72% [13],[19],[20],[36],[50]    
Cost $ 5,000 [3],[14],[17],[18],[35],[49] $ 4,900 [6],[13],[19],[20],[36],[50]    
Fair value $ 5,246 [7],[14],[17],[18],[35],[49] $ 5,146 [8],[13],[19],[20],[36],[50]    
Investment, Identifier [Axis]: Buca C, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 6 [11] 6 [12]    
Total Rate 6.00% [11] 6.00% [12] 6.00%  
PIK Rate 6.00% [11],[25] 6.00% [12],[26] 6.00%  
Cost $ 4,770 [3],[11] $ 4,770 [6],[12]    
Fair value $ 0 [7],[11] $ 0 [8],[12] $ 0 0
Investment, Identifier [Axis]: Buca C, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.00% [11],[28],[45] 15.00% [12],[27],[37] 15.00%  
PIK Rate 15.00% [11],[25],[28],[45] 15.00% [12],[26],[27],[37] 15.00%  
Principal $ 9,500 [3],[11],[28],[45] $ 8,380 [6],[12],[27],[37]    
Cost 6,394 [3],[11],[28],[45] 6,282 [6],[12],[27],[37]    
Fair value $ 0 [7],[11],[28],[45] $ 0 [8],[12],[27],[37] $ 0 0
Investment, Identifier [Axis]: Buca C, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.00% [11],[28],[45] 15.00% [12],[27],[37] 15.00%  
PIK Rate 15.00% [11],[25],[28],[45] 15.00% [12],[26],[27],[37] 15.00%  
Principal $ 20 [3],[11],[28],[45] $ 18 [6],[12],[27],[37]    
Cost 0 [3],[11],[28],[45] 0 [6],[12],[27],[37]    
Fair value $ 0 [7],[11],[28],[45] $ 0 [8],[12],[27],[37] $ 0 0
Investment, Identifier [Axis]: Buca C, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 15.00% [11],[28],[45] 15.00% [12],[27],[37] 15.00%  
PIK Rate 15.00% [11],[25],[28],[45] 15.00% [12],[26],[27],[37] 15.00%  
Principal $ 12,442 [3],[11],[28],[45] $ 11,112 [6],[12],[27],[37]    
Cost 5,862 [3],[11],[28],[45] 5,862 [6],[12],[27],[37]    
Fair value $ 0 [7],[11],[28],[45] $ 0 [8],[12],[27],[37] $ 0 0
Investment, Identifier [Axis]: CBT Nuggets, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 416 [9],[35] 416 [10],[36]    
Cost $ 1,300 [3],[9],[35] $ 1,300 [6],[10],[36]    
Fair value $ 38,900 [7],[9],[35] $ 47,930 [8],[10],[36] 48,960 49,540
Investment, Identifier [Axis]: CGMS Parent LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,000 [11],[35] 2,000 [12]    
Cost $ 10,000 [3],[11],[35] $ 10,000 [6],[12]    
Fair value 10,000 [7],[11],[35] 10,000 [8],[12]    
Investment, Identifier [Axis]: CGMS Parent LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[11],[30] 0 [6],[12],[33]    
Cost (33) [3],[11],[30] (39) [6],[12],[33]    
Fair value $ (33) [7],[11],[30] (39) [8],[12],[33]    
Investment, Identifier [Axis]: CGMS Parent LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 24,326 24,754    
Investment, Identifier [Axis]: CGMS Parent LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ (33) $ (39)    
Investment, Identifier [Axis]: CGMS Parent LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 13.00% [12]    
Principal $ 24,531 [3],[11] $ 25,000 [6],[12]    
Cost 24,326 [3],[11] 24,754 [6],[12]    
Fair value $ 24,326 [7],[11] $ 24,754 [8],[12]    
Investment, Identifier [Axis]: CQ Fluency, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.50% [14],[15],[29],[30],[31] 6.75% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (14) [3],[14],[15],[30],[31] (28) [6],[13],[16],[33],[34]    
Fair value $ (14) [7],[14],[15],[30],[31] $ (28) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: CQ Fluency, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.67% [14],[15],[31] 10.52% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 9,844 [3],[14],[15],[31] $ 10,266 [6],[13],[16],[34]    
Cost 9,780 [3],[14],[15],[31] 10,133 [6],[13],[16],[34]    
Fair value $ 9,844 [7],[14],[15],[31] $ 10,266 [8],[13],[16],[34]    
Investment, Identifier [Axis]: CRC Evans USA Bidco, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[19],[24],[34],[38]   10.87%    
Spread (as a percent) 6.75% [14],[15],[17],[23],[29],[30],[31] 6.75% [13],[16],[19],[24],[32],[34],[38]    
Principal $ 0 [3],[14],[15],[17],[23],[30],[31] $ 6,838 [6],[13],[16],[19],[24],[34],[38]    
Cost (127) [3],[14],[15],[17],[23],[30],[31] 6,676 [6],[13],[16],[19],[24],[34],[38]    
Fair value $ 0 [7],[14],[15],[17],[23],[30],[31] $ 6,838 [8],[13],[16],[19],[24],[34],[38]    
Investment, Identifier [Axis]: CRC Evans USA Bidco, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.75% [14],[15],[17],[23],[29],[30],[31] 6.75% [13],[16],[19],[24],[32],[33]    
Principal $ 0 [3],[14],[15],[17],[23],[30],[31] $ 0 [6],[13],[16],[19],[24],[33]    
Cost (220) [3],[14],[15],[17],[23],[30],[31] (280) [6],[13],[16],[19],[24],[33]    
Fair value $ (220) [7],[14],[15],[17],[23],[30],[31] $ (280) [8],[13],[16],[19],[24],[33]    
Investment, Identifier [Axis]: CRC Evans USA Bidco, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.09% [14],[15],[17],[23],[31] 10.70% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.75% [14],[15],[17],[23],[29],[31] 6.75% [13],[16],[19],[24],[32],[34]    
Principal $ 9,173 [3],[14],[15],[17],[23],[31] $ 9,542 [6],[13],[16],[19],[24],[34]    
Cost 9,032 [3],[14],[15],[17],[23],[31] 9,355 [6],[13],[16],[19],[24],[34]    
Fair value $ 9,173 [7],[14],[15],[17],[23],[31] $ 9,355 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: CRC Evans USA Bidco, Inc. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 11.09% [14],[15],[17],[23],[31] 10.83% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.75% [14],[15],[17],[23],[29],[31] 6.75% [13],[16],[19],[24],[32],[34]    
Principal $ 14,372 [3],[14],[15],[17],[23],[31] $ 14,949 [6],[13],[16],[19],[24],[34]    
Cost 14,118 [3],[14],[15],[17],[23],[31] 14,614 [6],[13],[16],[19],[24],[34]    
Fair value $ 14,372 [7],[14],[15],[17],[23],[31] $ 14,949 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Café Brazil, LLC | Member Units        
Schedule of Investments [Line Items]        
Fair value     0 1,200
Investment, Identifier [Axis]: California Splendor Holdings LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 11,671 [9],[35] 8,671 [10],[36]    
Total Rate 15.00% [9],[35] 15.00% [10],[36]    
PIK Rate 15.00% [9],[25],[35] 15.00% [10],[26],[36]    
Cost $ 17,294 [3],[9],[35] $ 12,569 [6],[10],[36]    
Fair value 17,294 [7],[9],[35] 12,569 [8],[10],[36] $ 15,275 22,215
Investment, Identifier [Axis]: California Splendor Holdings LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value $ 14,641 12,801    
Investment, Identifier [Axis]: California Splendor Holdings LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Total Rate 15.00%      
PIK Rate 15.00%      
Fair value $ 17,294 $ 12,569    
Investment, Identifier [Axis]: California Splendor Holdings LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 8,729 [9] 8,729 [10],[36]    
Total Rate     15.00%  
PIK Rate     15.00%  
Cost $ 16,402 [3],[9] $ 16,402 [6],[10],[36]    
Fair value 14,641 [7],[9] 12,801 [8],[10],[36] $ 12,150 10,909
Investment, Identifier [Axis]: California Splendor Holdings LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     14.00%  
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost (8) [3],[9],[30] (11) [6],[10],[33]    
Fair value $ (8) [7],[9],[30] (11) [8],[10],[33] $ 25,774 28,465
Investment, Identifier [Axis]: California Splendor Holdings LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 14.00%      
Fair value $ 25,783 25,638    
Investment, Identifier [Axis]: California Splendor Holdings LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ (8) $ (11)    
Investment, Identifier [Axis]: California Splendor Holdings LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.00% [9] 14.00% [10]    
Principal $ 25,800 [3],[9] $ 25,800 [6],[10]    
Cost 25,783 [3],[9] 25,776 [6],[10]    
Fair value $ 25,783 [7],[9] $ 25,638 [8],[10] (12) 1,506
Investment, Identifier [Axis]: Career Team Holdings, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 540,597 [11] 516,617 [12]    
Cost $ 5,406 [3],[11] $ 5,166 [6],[12]    
Fair value $ 5,406 [7],[11] $ 5,370 [8],[12] $ 5,370 4,740
Investment, Identifier [Axis]: Career Team Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [11],[29],[30],[31] 6.00% [12],[32],[33],[34] 6.00%  
Principal $ 0 [3],[11],[30],[31] $ 0 [6],[12],[33],[34]    
Cost (37) [3],[11],[30],[31] (45) [6],[12],[33],[34]    
Fair value $ (37) [7],[11],[30],[31] $ (45) [8],[12],[33],[34] $ (41) 887
Investment, Identifier [Axis]: Career Team Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 13.00% [12] 13.00%  
Principal $ 21,892 [3],[11] $ 21,892 [6],[12]    
Cost 21,540 [3],[11] 21,551 [6],[12]    
Fair value $ 21,540 [7],[11] $ 21,551 [8],[12] $ 21,531 19,364
Investment, Identifier [Axis]: CaseWorthy, Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16]   325,408    
Cost [6],[13],[16]   $ 325    
Fair value [8],[13],[16]   $ 710    
Investment, Identifier [Axis]: CenterPeak Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,310 [11],[35] 3,310 [12],[36]    
Cost $ 3,635 [3],[11],[35] $ 3,635 [6],[12],[36]    
Fair value 29,420 [7],[11],[35] $ 24,340 [8],[12],[36]    
Investment, Identifier [Axis]: CenterPeak Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12]   15.00%    
Principal [6],[12]   $ 1,800    
Cost [6],[12]   1,794    
Fair value [8],[12]   1,800    
Investment, Identifier [Axis]: CenterPeak Holdings, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value 0 1,800    
Investment, Identifier [Axis]: CenterPeak Holdings, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value 0 $ 25,107    
Investment, Identifier [Axis]: CenterPeak Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12]   15.00%    
Principal [6],[12]   $ 25,107    
Cost [6],[12]   25,103    
Fair value [8],[12]   $ 25,107    
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [10]   13,883    
Cost [6],[10]   $ 6,386    
Fair value $ 0 $ 42,710 [8],[10] $ 21,220 12,410
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 8.00% 8.00% [10],[32],[33],[34] 8.00%  
Principal [6],[10],[33],[34]   $ 0    
Cost [6],[10],[33],[34]   0    
Fair value $ 0 $ 0 [8],[10],[33],[34] $ 0 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   11.98% [10],[34] 12.41%  
Spread (as a percent) 8.00% 8.00% [10],[32],[34] 8.00%  
Principal [6],[10],[34]   $ 24,085    
Cost [6],[10],[34]   24,058    
Fair value $ 0 $ 24,085 [8],[10],[34] $ 24,464 25,534
Investment, Identifier [Axis]: Chamberlin Holding LLC | Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 4,347 [9],[35] 4,347 [10],[36]    
Cost $ 11,440 [3],[9],[35] $ 11,440 [6],[10],[36]    
Fair value $ 48,060 [7],[9],[35] $ 35,530 [8],[10],[36] 33,070 33,110
Investment, Identifier [Axis]: Chamberlin Holding LLC | Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 1,047,146 [9],[35],[48] 1,047,146 [10],[36],[44]    
Cost $ 1,773 [3],[9],[35],[48] $ 1,773 [6],[10],[36],[44]    
Fair value $ 4,190 [7],[9],[35],[48] $ 4,170 [8],[10],[36],[44] $ 3,770 3,550
Investment, Identifier [Axis]: Chamberlin Holding LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [9],[29],[30],[31] 6.00% [10],[32],[33],[34] 6.00%  
Principal $ 0 [3],[9],[30],[31] $ 0 [6],[10],[33],[34]    
Cost (30) [3],[9],[30],[31] (39) [6],[10],[33],[34]    
Fair value $ 0 [7],[9],[30],[31] $ 0 [8],[10],[33],[34] $ 0 0
Investment, Identifier [Axis]: Chamberlin Holding LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.86% [9],[31] 11.99% [10],[34] 12.49%  
Spread (as a percent) 8.00% [9],[29],[31] 8.00% [10],[32],[34] 8.00%  
Principal $ 41,220 [3],[9],[31] $ 42,020 [6],[10],[34]    
Cost 41,041 [3],[9],[31] 41,781 [6],[10],[34]    
Fair value $ 41,220 [7],[9],[31] $ 42,020 [8],[10],[34] $ 20,420 15,620
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.72% [14],[15],[31],[43] 10.84% [13],[16],[34],[38]    
Spread (as a percent) 6.75% [14],[15],[29],[31],[43] 6.75% [13],[16],[32],[34],[38]    
Principal $ 8,286 [3],[14],[15],[31],[43] $ 7,250 [6],[13],[16],[34],[38]    
Cost 8,248 [3],[14],[15],[31],[43] 7,146 [6],[13],[16],[34],[38]    
Fair value $ 8,286 [7],[14],[15],[31],[43] $ 7,250 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.74% [14],[15],[31] 10.84% [13],[16],[34]    
Spread (as a percent) 6.75% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 35,515 [3],[14],[15],[31] $ 35,794 [6],[13],[16],[34]    
Cost 35,463 [3],[14],[15],[31] 35,634 [6],[13],[16],[34]    
Fair value $ 35,515 [7],[14],[15],[31] $ 35,794 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.74% [14],[15],[31] 10.84% [13],[16],[34]    
Spread (as a percent) 6.75% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 1,968 [3],[14],[15],[31] $ 1,983 [6],[13],[16],[34]    
Cost 1,965 [3],[14],[15],[31] 1,974 [6],[13],[16],[34]    
Fair value $ 1,968 [7],[14],[15],[31] $ 1,983 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.74% [14],[15],[31] 10.84% [13],[16],[34]    
Spread (as a percent) 6.75% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 4,756 [3],[14],[15],[31] $ 4,793 [6],[13],[16],[34]    
Cost 4,745 [3],[14],[15],[31] 4,758 [6],[13],[16],[34]    
Fair value $ 4,756 [7],[14],[15],[31] $ 4,793 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.74%      
Spread (as a percent) [14],[15],[29],[31] 6.75%      
Principal [3],[14],[15],[31] $ 3,898      
Cost [3],[14],[15],[31] 3,852      
Fair value [7],[14],[15],[31] $ 3,898      
Investment, Identifier [Axis]: Charps, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,829 [9],[35] 1,829 [10],[36]    
Cost $ 1,963 [3],[9],[35] $ 1,963 [6],[10],[36]    
Fair value $ 14,710 [7],[9],[35] $ 16,020 [8],[10],[36] $ 15,270 15,580
Investment, Identifier [Axis]: Charps, LLC | Unsecured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.00% [9] 14.00% [10] 14.00%  
Principal $ 5,694 [3],[9] $ 5,694 [6],[10]    
Cost 5,345 [3],[9] 5,267 [6],[10]    
Fair value $ 5,694 [7],[9] $ 5,694 [8],[10] $ 5,694 5,694
Investment, Identifier [Axis]: Clad-Rex Steel, LLC | Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 717 [9],[35] 717 [10],[36]    
Cost $ 7,280 [3],[9],[35] $ 7,280 [6],[10],[36]    
Fair value $ 15,270 [7],[9],[35] $ 14,120 [8],[10],[36] 14,120 10,990
Investment, Identifier [Axis]: Clad-Rex Steel, LLC | Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 800 [9],[48] 800 [10],[44]    
Cost $ 509 [3],[9],[48] $ 509 [6],[10],[44]    
Fair value 1,510 [7],[9],[48] 1,270 [8],[10],[44] 1,270 950
Investment, Identifier [Axis]: Clad-Rex Steel, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost 0 [3],[9],[30] 0 [6],[10],[33]    
Fair value $ 0 [7],[9],[30] $ 0 [8],[10],[33] 0 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% [9] 10.00% [10]    
Principal $ 8,344 [3],[9] $ 9,480 [6],[10]    
Cost 8,289 [3],[9] 9,405 [6],[10]    
Fair value $ 8,344 [7],[9] $ 9,480 [8],[10] $ 0 6,760
Investment, Identifier [Axis]: Clad-Rex Steel, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00% [9] 10.00% [10] 10.00%  
Principal $ 893 [3],[9] $ 929 [6],[10]    
Cost 887 [3],[9] 922 [6],[10]    
Fair value 893 [7],[9] 929 [8],[10] $ 9,640 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate     10.00%  
Fair value     $ 940 973
Investment, Identifier [Axis]: Clarius BIGS, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Principal 2,627 [3],[14],[15],[28],[45],[51] 2,628 [6],[13],[16],[27],[37]    
Cost 2,627 [3],[14],[15],[28],[45],[51] 2,628 [6],[13],[16],[27],[37]    
Fair value $ 4 [7],[14],[15],[28],[45],[51] $ 8 [8],[13],[16],[27],[37]    
Investment, Identifier [Axis]: Classic H&G Holdings, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 154 [11] 154 [12]    
Cost $ 0 [3],[11] $ 0 [6],[12]    
Fair value $ 2,130 [7],[11] $ 2,040 [8],[12] 1,960 2,850
Investment, Identifier [Axis]: Cody Pools, Inc. | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 587 [9],[35],[48] 587 [10],[36],[44]    
Cost $ 8,317 [3],[9],[35],[48] $ 8,317 [6],[10],[36],[44]    
Fair value $ 61,160 [7],[9],[35],[48] 65,060 [8],[10],[36],[44] 66,480 67,810
Investment, Identifier [Axis]: Cody Pools, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [9] 13.50%      
Principal $ 4,214 [3],[9] 0 [6],[10],[33]    
Cost 4,137 [3],[9] (82) [6],[10],[33]    
Fair value $ 4,214 [7],[9] $ 0 [8],[10],[33] $ 0 0
Investment, Identifier [Axis]: Cody Pools, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% [9] 12.50% [10] 12.50%  
Principal $ 33,618 [3],[9] $ 34,901 [6],[10]    
Cost 33,157 [3],[9] 34,336 [6],[10]    
Fair value $ 33,618 [7],[9] $ 34,901 [8],[10] $ 39,815 39,227
Investment, Identifier [Axis]: Colonial Electric Company LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 17,280 [9],[35] 17,280 [10],[36]    
Cost $ 7,680 [3],[9],[35] $ 7,680 [6],[10],[36]    
Fair value 24,890 [7],[9],[35] 16,830 [8],[10],[36] 14,420 13,570
Investment, Identifier [Axis]: Colonial Electric Company LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost 0 [3],[9],[30] 0 [6],[10],[33]    
Fair value 0 [7],[9],[30] 0 [8],[10],[33] $ 0 0
Investment, Identifier [Axis]: Colonial Electric Company LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Colonial Electric Company LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 9.00%      
Fair value $ 8,779 $ 8,779    
Investment, Identifier [Axis]: Colonial Electric Company LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% [9] 9.00% [10] 12.00%  
Principal $ 8,779 [3],[9] $ 8,779 [6],[10]    
Cost 8,709 [3],[9] 8,773 [6],[10]    
Fair value $ 8,779 [7],[9] $ 8,779 [8],[10] $ 8,779 14,310
Investment, Identifier [Axis]: CompareNetworks Topco, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,250 [9] 2,250 [10]    
Cost $ 3,520 [3],[9] $ 3,520 [6],[10]    
Fair value $ 3,170 [7],[9] $ 7,650 [8],[10] $ 8,180 11,260
Investment, Identifier [Axis]: CompareNetworks Topco, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.79% [9],[31] 12.98% [10]    
Spread (as a percent) [9],[29],[31] 11.00%      
Principal $ 4,000 [3],[9],[31] $ 4,037 [6],[10]    
Cost 3,997 [3],[9],[31] 4,031 [6],[10]    
Fair value $ 3,939 [7],[9],[31] $ 4,031 [8],[10]    
Investment, Identifier [Axis]: CompareNetworks Topco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent)     9.00%  
Fair value     $ 0 2,903
Investment, Identifier [Axis]: CompareNetworks Topco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     13.41%  
Spread (as a percent)     9.00%  
Fair value     $ 4,431 0
Investment, Identifier [Axis]: Compass Systems & Sales, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 8,069 [9] 7,454 [10]    
Cost $ 7,842 [3],[9] $ 7,454 [6],[10]    
Fair value 7,842 [7],[9] 7,180 [8],[10] 7,180 7,450
Investment, Identifier [Axis]: Compass Systems & Sales, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost (11) [3],[9],[30] (15) [6],[10],[33]    
Fair value $ (11) [7],[9],[30] $ (15) [8],[10],[33] $ (17) (21)
Investment, Identifier [Axis]: Compass Systems & Sales, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% [9] 13.50% [10] 13.50%  
Principal $ 15,000 [3],[9] $ 17,200 [6],[10]    
Cost 14,936 [3],[9] 17,100 [6],[10]    
Fair value $ 14,936 [7],[9] 16,961 [8],[10] $ 16,954 17,067
Investment, Identifier [Axis]: Computer Data Source, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [9],[15] 29,817      
Cost [3],[9],[15] $ 15,640      
Fair value $ 15,640 [7],[9],[15] $ 0    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34],[38]   12.28%    
Spread (as a percent) 5.50% [9],[15],[29],[30],[31] 8.25% [13],[16],[32],[34],[38]    
PIK Rate [13],[16],[26],[34],[38]   12.02%    
Principal $ 0 [3],[9],[15],[30],[31] $ 8,830 [6],[13],[16],[34],[38]    
Cost 0 [3],[9],[15],[30],[31] 8,800 [6],[13],[16],[34],[38]    
Fair value $ 0 [7],[9],[15],[30],[31] 8,393 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Spread (as a percent) 10.25%      
Fair value $ 0 8,394    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Spread (as a percent) 10.25%      
Fair value $ 0 20,352    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.50%      
Fair value $ 0 0    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
Spread (as a percent) 5.50%      
PIK Rate 10.00%      
Fair value $ 5,000 $ 0    
Investment, Identifier [Axis]: Computer Data Source, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% [9],[15],[31] 12.02% [13],[16],[34]    
Spread (as a percent) 5.50% [9],[15],[29],[31] 8.25% [13],[16],[32],[34]    
PIK Rate 10.00% [9],[15],[25],[31] 12.02% [13],[16],[26],[34]    
Principal $ 5,000 [3],[9],[15] $ 21,410 [6],[13],[16],[34]    
Cost 5,000 [3],[9],[15],[31] 21,367 [6],[13],[16],[34]    
Fair value $ 5,000 [7],[9],[15],[31] $ 20,352 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds | LP Interests (Congruent Credit Opportunities Fund III, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 12.49% [11],[17],[18],[49] 12.49% [12],[19],[20],[36],[50]    
Cost $ 308 [3],[11],[17],[18],[49] $ 308 [6],[12],[19],[20],[36],[50]    
Fair value $ 836 [7],[11],[17],[18],[49] $ 24 [8],[12],[19],[20],[36],[50] 662 2,276
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc. | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 22,304 [11],[17],[23] 22,304 [12],[19],[24]    
Cost $ 12,596 [3],[11],[17],[23] $ 12,596 [6],[12],[19],[24]    
Fair value $ 11,160 [7],[11],[17],[23] $ 12,596 [8],[12],[19],[24] $ 12,596 12,596
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc. | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11],[17],[23] 13.00% [12],[19],[24] 13.00%  
Principal $ 22,715 [3],[11],[17],[23] $ 24,336 [6],[12],[19],[24]    
Cost 22,578 [3],[11],[17],[23] 24,153 [6],[12],[19],[24]    
Fair value $ 22,578 [7],[11],[17],[23] $ 24,153 [8],[12],[19],[24] $ 24,856 27,315
Investment, Identifier [Axis]: Copper Trail Fund Investments | LP Interests (CTMH, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 38.75% [9],[17],[18],[49] 38.75% [10],[19],[20],[50]    
Cost $ 315 [3],[9],[17],[18],[49] $ 390 [6],[10],[19],[20],[50]    
Fair value $ 380 [7],[9],[17],[18],[49] $ 390 [8],[10],[19],[20],[50] 515 500
Investment, Identifier [Axis]: Core Transformers | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16]   626,923    
Cost [6],[13],[16]   $ 627    
Fair value [8],[13],[16]   $ 627    
Investment, Identifier [Axis]: Core Transformers | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   5.50%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (59)    
Fair value [8],[13],[16],[33],[34]   $ (59)    
Investment, Identifier [Axis]: Core Transformers | Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   5.50%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (59)    
Fair value [8],[13],[16],[33],[34]   $ (59)    
Investment, Identifier [Axis]: Core Transformers | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.23%    
Spread (as a percent) [13],[16],[32],[34]   5.50%    
Principal [6],[13],[16],[34]   $ 6,269    
Cost [6],[13],[16],[34]   6,151    
Fair value [8],[13],[16],[34]   $ 6,151    
Investment, Identifier [Axis]: CoreStack, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15] 10.00%      
PIK Rate [14],[15],[25] 10.00%      
Principal [3],[14],[15] $ 1,451      
Cost [3],[14],[15] 1,451      
Fair value [7],[14],[15] 1,451      
Investment, Identifier [Axis]: CoreStack, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Principal [3],[14],[15],[51] 13,089      
Cost [3],[14],[15],[51] 13,089      
Fair value [7],[14],[15],[51] $ 13,089      
Investment, Identifier [Axis]: Coregistics Buyer LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.27% [14],[15],[17],[23],[31] 10.32% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.50% [14],[15],[17],[23],[29],[31] 6.50% [13],[16],[19],[24],[32],[34]    
Principal $ 1,669 [3],[14],[15],[17],[23],[31] $ 1,669 [6],[13],[16],[19],[24],[34]    
Cost 1,621 [3],[14],[15],[17],[23],[31] 1,608 [6],[13],[16],[19],[24],[34]    
Fair value $ 1,660 [7],[14],[15],[17],[23],[31] $ 1,656 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Coregistics Buyer LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.32% [14],[15],[17],[23],[31] 10.34% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.50% [14],[15],[17],[23],[29],[31] 6.50% [13],[16],[19],[24],[32],[34]    
Principal $ 10,462 [3],[14],[15],[17],[23],[31] $ 10,570 [6],[13],[16],[19],[24],[34]    
Cost 10,323 [3],[14],[15],[17],[23],[31] 10,391 [6],[13],[16],[19],[24],[34]    
Fair value $ 10,369 [7],[14],[15],[17],[23],[31] $ 10,484 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Coregistics Buyer LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.57% [14],[15],[17],[23],[31] 10.59% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.75% [14],[15],[17],[23],[29],[31] 6.75% [13],[16],[19],[24],[32],[34]    
Principal $ 31,548 [3],[14],[15],[17],[23],[31] $ 31,790 [6],[13],[16],[19],[24],[34]    
Cost 31,116 [3],[14],[15],[17],[23],[31] 31,236 [6],[13],[16],[19],[24],[34]    
Fair value $ 30,222 [7],[14],[15],[17],[23],[31] $ 31,678 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Coregistics Buyer LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.23% [14],[15],[17],[23],[31] 10.37% [13],[16],[19],[24],[34]    
Spread (as a percent) 6.50% [14],[15],[17],[23],[29],[31] 6.50% [13],[16],[19],[24],[32],[34]    
Principal $ 6,975 [3],[14],[15],[17],[23],[31] $ 7,047 [6],[13],[16],[19],[24],[34]    
Cost 6,896 [3],[14],[15],[17],[23],[31] 6,945 [6],[13],[16],[19],[24],[34]    
Fair value $ 6,910 [7],[14],[15],[17],[23],[31] $ 6,989 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: Creative Foam Corporation | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 10,851 [14],[15] 10,851 [13],[16]    
Cost $ 1,085 [3],[14],[15] $ 1,085 [6],[13],[16]    
Fair value $ 490 [7],[14],[15] $ 860 [8],[13],[16]    
Investment, Identifier [Axis]: Creative Foam Corporation | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.00% [14],[15],[29],[30],[31] 6.75% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (145) [3],[14],[15],[30],[31] (184) [6],[13],[16],[33],[34]    
Fair value $ (145) [7],[14],[15],[30],[31] $ (184) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Creative Foam Corporation | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.75% [14],[15],[31] 10.69% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 5,492 [3],[14],[15],[31] $ 5,531 [6],[13],[16],[34]    
Cost 5,417 [3],[14],[15],[31] 5,435 [6],[13],[16],[34]    
Fair value $ 5,492 [7],[14],[15],[31] $ 5,531 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Creative Foam Corporation | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.07% [14],[15],[31] 10.44% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 6.75% [13],[16],[32],[34]    
Principal $ 88,024 [3],[14],[15],[31] $ 88,683 [6],[13],[16],[34]    
Cost 87,041 [3],[14],[15],[31] 87,428 [6],[13],[16],[34]    
Fair value $ 88,024 [7],[14],[15],[31] $ 88,683 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Cybermedia Technologies, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,400,000 [9] 2,400,000 [10]    
Cost $ 2,400 [3],[9] $ 2,400 [6],[10]    
Fair value $ 5,740 [7],[9] $ 6,340 [8],[10] 4,360 0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 556 [9] 556 [10]    
Cost $ 15,000 [3],[9] $ 15,000 [6],[10]    
Fair value 0 [7],[9] 0 [8],[10] 0 15,000
Investment, Identifier [Axis]: Cybermedia Technologies, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost 0 [3],[9],[30] 0 [6],[10],[33]    
Fair value $ 0 [7],[9],[30] $ 0 [8],[10],[33] $ 0 0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 26,085 [3],[9] $ 27,210 [6],[10]    
Cost 26,001 [3],[9] 27,082 [6],[10]    
Fair value $ 25,746 [7],[9] $ 27,076 [8],[10] $ 26,537 27,116
Investment, Identifier [Axis]: DMA Industries, LLC | Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 3,068 [11],[35] 5,944 [12]    
Total Rate [11],[35] 15.00%      
PIK Rate [11],[25],[35] 15.00%      
Cost $ 4,191 [3],[11],[35] $ 5,944 [6],[12]    
Fair value 9,381 [7],[11],[35] 9,174 [8],[12] $ 8,434 5,944
Investment, Identifier [Axis]: DMA Industries, LLC | Preferred Equity 1.1        
Schedule of Investments [Line Items]        
Fair value $ 15,994 9,174    
Investment, Identifier [Axis]: DMA Industries, LLC | Preferred Equity 1.2        
Schedule of Investments [Line Items]        
Total Rate 15.00%      
PIK Rate 15.00%      
Fair value $ 9,381 $ 5,424    
Investment, Identifier [Axis]: DMA Industries, LLC | Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 5,944 [11] 3,068 [12],[36]    
Total Rate   15.00% [12],[36] 15.00%  
PIK Rate   15.00% [12],[26],[36] 15.00%  
Cost $ 5,944 [3],[11] $ 3,754 [6],[12],[36]    
Fair value $ 15,994 [7],[11] $ 5,424 [8],[12],[36] $ 4,907 3,240
Investment, Identifier [Axis]: DMA Industries, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 10.00% [12] 12.00%  
Principal $ 4,642 [3],[11] $ 560 [6],[12]    
Cost 4,618 [3],[11] 556 [6],[12]    
Fair value $ 4,642 [7],[11] 560 [8],[12] $ 14,400 16,722
Investment, Identifier [Axis]: DMA Industries, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 12,800 12,800    
Investment, Identifier [Axis]: DMA Industries, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 4,642 $ 560    
Investment, Identifier [Axis]: DMA Industries, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 10.00% [12] 12.00%  
Principal $ 12,800 [3],[11] $ 12,800 [6],[12]    
Cost 12,764 [3],[11] 12,754 [6],[12]    
Fair value $ 12,800 [7],[11] $ 12,800 [8],[12] $ 560 555
Investment, Identifier [Axis]: DTE Enterprises, LLC | Class A Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16]   776,316    
Total Rate [13],[16]   8.00%    
PIK Rate [13],[16],[26]   8.00%    
Cost [6],[13],[16]   $ 776    
Fair value [8],[13],[16]   $ 0    
Investment, Identifier [Axis]: DTE Enterprises, LLC | Class AA Preferred Member Units (non-voting)        
Schedule of Investments [Line Items]        
Total Rate [13],[16]   10.00%    
PIK Rate [13],[16],[26]   10.00%    
Cost [6],[13],[16]   $ 1,316    
Fair value [8],[13],[16]   $ 0    
Investment, Identifier [Axis]: Dalton US Inc. | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 515 [14],[15] 515 [13],[16]    
Cost $ 720 [3],[14],[15] $ 720 [6],[13],[16]    
Fair value $ 490 [7],[14],[15] $ 650 [8],[13],[16]    
Investment, Identifier [Axis]: Dalton US Inc. | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 41      
Cost [3],[14],[15] $ 41      
Fair value [7],[14],[15] $ 160      
Investment, Identifier [Axis]: Datacom, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 9,360 [9] 9,360 [10]    
Cost $ 2,970 [3],[9] $ 2,970 [6],[10]    
Fair value $ 0 [7],[9] $ 0 [8],[10] $ 0 240
Investment, Identifier [Axis]: Datacom, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.00% [9] 7.50% [10] 7.50%  
Principal $ 1,148 [3],[9] $ 675 [6],[10]    
Cost 1,148 [3],[9] 675 [6],[10]    
Fair value $ 1,148 [7],[9] $ 675 [8],[10] $ 675 493
Investment, Identifier [Axis]: Datacom, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% [9] 10.00% [10] 10.00%  
Principal $ 7,722 [3],[9] $ 7,812 [6],[10]    
Cost 7,709 [3],[9] 7,812 [6],[10]    
Fair value $ 1,702 [7],[9] $ 4,169 [8],[10] $ 5,589 7,947
Investment, Identifier [Axis]: Digital Products Holdings LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3,857 [9],[35] 3,857 [10],[36]    
Cost $ 9,501 [3],[9],[35] $ 9,501 [6],[10],[36]    
Fair value $ 9,835 [7],[9],[35] $ 9,835 [8],[10],[36] $ 9,835 9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.69% [9],[31] 13.88% [10],[34] 14.31%  
Spread (as a percent) 10.00% [9],[29],[31] 10.00% [10],[32],[34] 10.00%  
Principal $ 11,297 [3],[9],[31] $ 11,957 [6],[10],[34]    
Cost 11,245 [3],[9],[31] 11,943 [6],[10],[34]    
Fair value $ 11,245 [7],[9],[31] $ 11,338 [8],[10],[34] $ 11,795 12,422
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc. | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 9,936 [9] 8,400 [10]    
Cost $ 13,040 [3],[9] $ 8,400 [6],[10]    
Fair value 35,088 [7],[9] $ 19,760 [8],[10] $ 19,080 17,930
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   14.00% [10] 14.00%  
Principal 0 [3],[9],[30] $ 1,785 [6],[10]    
Cost (27) [3],[9],[30] 1,783 [6],[10]    
Fair value 0 [7],[9],[30] 1,785 [8],[10] $ 1,020 0
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc. | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value 0 1,785    
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc. | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ 0 23,082    
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc. | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 14.00%      
Fair value $ 43,187 $ 0    
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.00% [9] 14.00% [10] 14.00%  
Principal $ 43,187 [3],[9] $ 23,082 [6],[10]    
Cost 42,887 [3],[9] 23,079 [6],[10]    
Fair value $ 43,187 [7],[9] $ 23,082 [8],[10] $ 23,082 23,902
Investment, Identifier [Axis]: Doral Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 13,000 [9],[35] 13,000 [10]    
Cost $ 13,000 [3],[9],[35] $ 13,000 [6],[10]    
Fair value $ 35,730 [7],[9],[35] 15,740 [8],[10] 13,000 0
Investment, Identifier [Axis]: Doral Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.00%      
Fair value $ 20,500 26,270    
Investment, Identifier [Axis]: Doral Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost 0 [3],[9],[30] 0 [6],[10],[33]    
Fair value $ 0 [7],[9],[30] $ 0 [8],[10],[33] $ 0 0
Investment, Identifier [Axis]: Doral Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [9] 13.00% [10] 13.00%  
Principal $ 20,500 [3],[9] $ 26,500 [6],[10]    
Cost 20,352 [3],[9] 26,270 [6],[10]    
Fair value $ 20,500 [7],[9] $ 26,270 [8],[10] $ 29,229 0
Investment, Identifier [Axis]: Dos Rios Partners | LP Interests (Dos Rios Partners - A, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 6.43% [11],[17],[18],[49] 6.43% [12],[19],[20],[50]    
Cost $ 1,872 [3],[11],[17],[18],[49] $ 1,915 [6],[12],[19],[20],[50]    
Fair value $ 2,170 [7],[11],[17],[18],[49] $ 2,549 [8],[12],[19],[20],[50] 2,451 2,447
Investment, Identifier [Axis]: Dos Rios Partners | LP Interests (Dos Rios Partners, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 20.24% [11],[17],[18],[49] 20.24% [12],[19],[20],[50]    
Cost $ 5,896 [3],[11],[17],[18],[49] $ 6,032 [6],[12],[19],[20],[50]    
Fair value $ 6,833 [7],[11],[17],[18],[49] $ 8,027 [8],[12],[19],[20],[50] 7,719 7,708
Investment, Identifier [Axis]: Dos Rios Stone Products LLC | Class A Preferred Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,000,000 [11],[15],[48] 2,000,000 [12],[16],[44]    
Cost $ 2,000 [3],[11],[15],[48] $ 2,000 [6],[12],[16],[44]    
Fair value $ 0 [7],[11],[15],[48] $ 0 [8],[12],[16],[44] 0 0
Investment, Identifier [Axis]: Dreyfus Government Cash Management        
Schedule of Investments [Line Items]        
Total Rate 3.63% 3.70%    
Cash and cash equivalent, Cost $ 13,218 [3],[52] $ 1,227 [6],[53]    
Cash and cash equivalents, Fair Value $ 13,218 [7],[52] $ 1,227 [8],[53]    
Investment, Identifier [Axis]: Dynamic Communities, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,250,000 [14],[15] 1,250,000 [13],[16]    
Cost $ 0 [3],[14],[15] $ 0 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 0 [8],[13],[16]    
Investment, Identifier [Axis]: Dynamic Communities, LLC | Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 125,000 [14],[15] 125,000 [13],[16]    
Cost $ 128 [3],[14],[15] $ 128 [6],[13],[16]    
Fair value $ 110 [7],[14],[15] $ 110 [8],[13],[16]    
Investment, Identifier [Axis]: Dynamic Communities, LLC | Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 2,376,241 [14],[15] 2,376,241 [13],[16]    
Cost $ 0 [3],[14],[15] $ 0 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 0 [8],[13],[16]    
Investment, Identifier [Axis]: Dynamic Communities, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [14],[15],[31] 11.82% [13],[16],[34]    
Spread (as a percent) 8.00% [14],[15],[29],[31] 8.00% [13],[16],[32],[34]    
PIK Rate 12.00% [14],[15],[25],[31] 11.82% [13],[16],[26],[34]    
Principal $ 2,852 [3],[14],[15],[31] $ 2,612 [6],[13],[16],[34]    
Cost 2,825 [3],[14],[15],[31] 2,507 [6],[13],[16],[34]    
Fair value $ 2,852 [7],[14],[15],[31] $ 2,612 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Dynamic Communities, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [14],[15],[31] 12.82% [13],[16],[34]    
Spread (as a percent) 9.00% [14],[15],[29],[31] 9.00% [13],[16],[32],[34]    
Principal $ 2,536 [3],[14],[15],[31] $ 2,493 [6],[13],[16],[34]    
Cost 2,303 [3],[14],[15],[31] 2,259 [6],[13],[16],[34]    
Fair value 2,506 [7],[14],[15],[31] $ 2,463 [8],[13],[16],[34]    
Investment, Identifier [Axis]: EIG Fund Investments | LP Interests (EIG Global Private Debt Fund-A, L.P.)        
Schedule of Investments [Line Items]        
Units (in shares) [12],[19],[20],[36]   5,000,000    
Cost [6],[12],[19],[20],[36]   $ 84    
Fair value $ 0 $ 37 [8],[12],[19],[20],[36] 37 369
Investment, Identifier [Axis]: EWMW LP | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 9.75% [14],[17],[18] 9.87% [13],[19],[20]    
Spread (as a percent) 6.00% [14],[17],[18],[29] 6.00% [13],[19],[20],[32]    
Principal $ 3,016 [3],[14],[17],[18] $ 3,144 [6],[13],[19],[20]    
Cost 3,016 [3],[14],[17],[18] 3,144 [6],[13],[19],[20]    
Fair value $ 3,016 [7],[14],[17],[18] $ 3,144 [8],[13],[19],[20]    
Investment, Identifier [Axis]: Electro Technical Industries, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,464,286 [14],[15] 1,464,286 [13],[16]    
Cost $ 1,464 [3],[14],[15] $ 1,464 [6],[13],[16]    
Fair value $ 11,190 [7],[14],[15] $ 2,220 [8],[13],[16]    
Investment, Identifier [Axis]: Electro Technical Industries, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   5.50%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (149)    
Fair value [8],[13],[16],[33],[34]   $ (149)    
Investment, Identifier [Axis]: Electro Technical Industries, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.22%    
Spread (as a percent) [13],[16],[32],[34]   5.50%    
Principal [6],[13],[16],[34]   $ 50,156    
Cost [6],[13],[16],[34]   49,312    
Fair value [8],[13],[16],[34]   $ 50,156    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC | Common Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 285 [9] 285 [10]    
Cost $ 5,726 [3],[9] $ 5,726 [6],[10]    
Fair value $ 4,080 [7],[9] $ 5,050 [8],[10] 5,100 5,730
Investment, Identifier [Axis]: Elgin AcquireCo, LLC | Common Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 939 [9],[48] 939 [10],[44]    
Cost $ 1,558 [3],[9],[48] $ 1,558 [6],[10],[44]    
Fair value $ 3,480 [7],[9],[48] $ 3,270 [8],[10],[44] $ 3,220 3,050
Investment, Identifier [Axis]: Elgin AcquireCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [9],[29],[30],[31] 6.00% [10],[32],[33],[34] 6.00%  
Principal $ 0 [3],[9],[30],[31] $ 0 [6],[10],[33],[34]    
Cost (2) [3],[9],[30],[31] (3) [6],[10],[33],[34]    
Fair value $ (2) [7],[9],[30],[31] $ (3) [8],[10],[33],[34] $ (3) (5)
Investment, Identifier [Axis]: Elgin AcquireCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10] 12.00%  
Principal $ 16,661 [3],[9] $ 16,778 [6],[10]    
Cost 16,627 [3],[9] 16,719 [6],[10]    
Fair value $ 16,566 [7],[9] $ 16,719 [8],[10] $ 17,225 17,969
Investment, Identifier [Axis]: Elgin AcquireCo, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.00% [9] 9.00% [10] 9.00%  
Principal $ 6,169 [3],[9] $ 6,212 [6],[10]    
Cost 6,116 [3],[9] 6,156 [6],[10]    
Fair value $ 6,116 [7],[9] $ 6,156 [8],[10] $ 6,169 6,207
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc. | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [13],[22],[34]   10.22%    
Spread (as a percent) [13],[22],[32],[34]   6.25%    
Principal [6],[13],[22],[34]   $ 9,330    
Cost [6],[13],[22],[34]   9,229    
Fair value [8],[13],[22],[34]   $ 5,878    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Energy Capital Fund IX, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.10%    
Cost [6],[13],[19],[20],[36],[50]   $ 3,187    
Fair value [8],[13],[19],[20],[36],[50]   $ 1,056    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.38%    
Cost [6],[13],[19],[20],[36],[50]   $ 1,394    
Fair value [8],[13],[19],[20],[36],[50]   $ 5    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Energy Capital Fund VIII, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.14%    
Cost [6],[13],[19],[20],[36],[50]   $ 2,613    
Fair value [8],[13],[19],[20],[36],[50]   $ 130    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Energy Capital Fund X, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.15%    
Cost [6],[13],[19],[20],[36],[50]   $ 6,975    
Fair value [8],[13],[19],[20],[36],[50]   $ 4,674    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Energy Capital Fund XII, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.19%    
Cost [6],[13],[19],[20],[36],[50]   $ 7,370    
Fair value [8],[13],[19],[20],[36],[50]   $ 7,731    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Flatrock Midstream Fund II, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.84%    
Cost [6],[13],[19],[20],[36],[50]   $ 3,799    
Fair value [8],[13],[19],[20],[36],[50]   $ 15    
Investment, Identifier [Axis]: EnCap Energy Fund Investments | LP Interests (EnCap Flatrock Midstream Fund III, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   0.25%    
Cost [6],[13],[19],[20],[36],[50]   $ 3,371    
Fair value [8],[13],[19],[20],[36],[50]   $ 1,947    
Investment, Identifier [Axis]: EnCap Energy Fund Investments. | LP Interests (EnCap Energy Capital Fund IX, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[35],[49] 0.10%      
Cost [3],[14],[17],[18],[35],[49] $ 3,152      
Fair value [7],[14],[17],[18],[35],[49] $ 653      
Investment, Identifier [Axis]: EnCap Energy Fund Investments. | LP Interests (EnCap Energy Capital Fund VIII, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[35],[49] 0.14%      
Cost [3],[14],[17],[18],[35],[49] $ 2,560      
Fair value [7],[14],[17],[18],[35],[49] $ 77      
Investment, Identifier [Axis]: EnCap Energy Fund Investments. | LP Interests (EnCap Energy Capital Fund X, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[35],[49] 0.15%      
Cost [3],[14],[17],[18],[35],[49] $ 6,615      
Fair value [7],[14],[17],[18],[35],[49] $ 3,830      
Investment, Identifier [Axis]: EnCap Energy Fund Investments. | LP Interests (EnCap Energy Capital Fund XII, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[35],[49] 0.19%      
Cost [3],[14],[17],[18],[35],[49] $ 9,021      
Fair value [7],[14],[17],[18],[35],[49] $ 10,449      
Investment, Identifier [Axis]: EnCap Energy Fund Investments. | LP Interests (EnCap Flatrock Midstream Fund II, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[49] 0.84%      
Cost [3],[14],[17],[18],[49] $ 3,799      
Fair value [7],[14],[17],[18],[49] $ 15      
Investment, Identifier [Axis]: EnCap Energy Fund Investments. | LP Interests (EnCap Flatrock Midstream Fund III, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[35],[49] 0.25%      
Cost [3],[14],[17],[18],[35],[49] $ 3,370      
Fair value [7],[14],[17],[18],[35],[49] $ 1,126      
Investment, Identifier [Axis]: Escalent, Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 649,794 [14],[15] 649,794 [13],[16]    
Cost $ 663 [3],[14],[15] $ 663 [6],[13],[16]    
Fair value $ 780 [7],[14],[15] $ 910 [8],[13],[16]    
Investment, Identifier [Axis]: Escalent, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31],[43] 10.07%      
Spread (as a percent) 6.00% [14],[15],[29],[31],[43] 6.00% [13],[16],[32],[33],[34]    
Principal $ 292 [3],[14],[15],[31],[43] $ 0 [6],[13],[16],[33],[34]    
Cost 275 [3],[14],[15],[31],[43] (22) [6],[13],[16],[33],[34]    
Fair value $ 292 [7],[14],[15],[31],[43] $ 0 [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Escalent, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31] 9.67% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
Principal $ 1,323 [3],[14],[15],[31] $ 1,354 [6],[13],[16],[34]    
Cost 1,310 [3],[14],[15],[31] 1,337 [6],[13],[16],[34]    
Fair value $ 1,323 [7],[14],[15],[31] $ 1,354 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Escalent, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31] 9.67% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
Principal $ 24,921 [3],[14],[15],[31] $ 25,517 [6],[13],[16],[34]    
Cost 24,599 [3],[14],[15],[31] 25,094 [6],[13],[16],[34]    
Fair value $ 24,921 [7],[14],[15],[31] $ 25,517 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Event Holdco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   10.93%    
Spread (as a percent) [13],[16],[32],[34]   7.00%    
Principal [6],[13],[16],[34]   $ 3,692    
Cost [6],[13],[16],[34]   3,685    
Fair value [8],[13],[16],[34]   $ 3,692    
Investment, Identifier [Axis]: Event Holdco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   10.93%    
Spread (as a percent) [13],[16],[32],[34]   7.00%    
Principal [6],[13],[16],[34]   $ 48,035    
Cost [6],[13],[16],[34]   47,948    
Fair value [8],[13],[16],[34]   48,035    
Investment, Identifier [Axis]: Event Holdco, LLC. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 11.34%      
Spread (as a percent) [14],[15],[29],[31] 7.00%      
Principal [3],[14],[15],[31] $ 3,692      
Cost [3],[14],[15],[31] 3,690      
Fair value [7],[14],[15],[31] $ 3,692      
Investment, Identifier [Axis]: Event Holdco, LLC. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 11.34%      
Spread (as a percent) [14],[15],[29],[31] 7.00%      
Principal [3],[14],[15],[31] $ 47,620      
Cost [3],[14],[15],[31] 47,597      
Fair value [7],[14],[15],[31] $ 47,620      
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00%   13.00%  
Fair value $ 29,930 31,160 $ 31,570 29,109
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[11],[30] 0 [6],[12],[33]    
Cost 0 [3],[11],[30] 0 [6],[12],[33]    
Fair value $ 0 [7],[11],[30] $ 0 [8],[12],[33]    
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 13.00% [12]    
Principal $ 29,930 [3],[11] $ 31,160 [6],[12]    
Cost 27,894 [3],[11] 28,448 [6],[12]    
Fair value $ 29,930 [7],[11] $ 31,160 [8],[12]    
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 12 [11],[35],[41] 12 [12],[36],[42]    
Cost $ 3,920 [3],[11],[35],[41] $ 3,920 [6],[12],[36],[42]    
Fair value $ 13,200 [7],[11],[35],[41] $ 15,140 [8],[12],[36],[42] 15,140 10,840
Investment, Identifier [Axis]: FRG AcquireCo, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,500 [11] 3,500 [12]    
Cost $ 3,500 [3],[11] $ 3,500 [6],[12]    
Fair value 3,500 [7],[11] 3,500 [8],[12] 3,500 0
Investment, Identifier [Axis]: FRG AcquireCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[11],[30] 0 [6],[12],[33]    
Cost (14) [3],[11],[30] (19) [6],[12],[33]    
Fair value $ (14) [7],[11],[30] $ (19) [8],[12],[33] $ (20) 0
Investment, Identifier [Axis]: FRG AcquireCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% [11] 13.00% [12] 13.00%  
Principal $ 7,482 [3],[11] $ 10,500 [6],[12]    
Cost 7,423 [3],[11] 10,402 [6],[12]    
Fair value $ 7,423 [7],[11] $ 10,402 [8],[12] $ 10,397 0
Investment, Identifier [Axis]: Fidelity Government Fund        
Schedule of Investments [Line Items]        
Total Rate 3.48% 3.43%    
Cash and cash equivalent, Cost $ 719 [3],[54] $ 1,171 [6],[55]    
Cash and cash equivalents, Fair Value $ 719 [7],[54] $ 1,171 [8],[55]    
Investment, Identifier [Axis]: Fidelity Treasury        
Schedule of Investments [Line Items]        
Total Rate 3.52% 3.43%    
Cash and cash equivalent, Cost $ 1,458 [3],[56] $ 850 [6],[57]    
Cash and cash equivalents, Fair Value $ 1,458 [7],[56] 850 [8],[57]    
Investment, Identifier [Axis]: Flame King Holdings, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [9],[35],[48] 3,929      
Cost [3],[9],[35],[48] $ 3,929      
Fair value $ 3,871 [7],[9],[35],[48] $ 0    
Investment, Identifier [Axis]: Flame King Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 9,360 [9],[35] 9,360 [10],[36]    
Cost $ 10,400 [3],[9],[35] $ 10,400 [6],[10],[36]    
Fair value $ 52,770 [7],[9],[35] 54,630 [8],[10],[36] $ 48,120 35,920
Investment, Identifier [Axis]: Flame King Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.00% [9]   12.00%  
Principal [3],[9] $ 66,000      
Cost [3],[9] 65,513      
Fair value $ 66,000 [7],[9] 66,000 $ 66,000 0
Investment, Identifier [Axis]: Flame King Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [6],[10],[33]   0    
Cost [6],[10],[33]   0    
Fair value [8],[10],[33]   $ 0    
Investment, Identifier [Axis]: Flame King Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [10]   12.00%    
Principal [6],[10]   $ 66,000    
Cost [6],[10]   65,415    
Fair value [8],[10]   $ 66,000    
Investment, Identifier [Axis]: Freeport Financial Funds | LP Interests (Freeport Financial SBIC Fund LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 9.30% [11],[17],[18],[49] 9.30% [12],[19],[20],[50]    
Cost $ 1,549 [3],[11],[17],[18],[49] $ 2,337 [6],[12],[19],[20],[50]    
Fair value $ 510 [7],[11],[17],[18],[49] $ 1,600 [8],[12],[19],[20],[50]    
Investment, Identifier [Axis]: Freeport Financial Funds | LP Interests (Freeport First Lien Loan Fund III LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 5.95% [11],[17],[18],[49] 5.95% [12],[19],[20],[50]    
Cost $ 524 [3],[11],[17],[18],[49] $ 671 [6],[12],[19],[20],[50]    
Fair value $ 46 [7],[11],[17],[18],[49] $ 193 [8],[12],[19],[20],[50]    
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP | LP Interests (Freeport Financial SBIC Fund LP)        
Schedule of Investments [Line Items]        
Fair value     1,843 2,190
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP | LP Interests (Freeport First Lien Loan Fund III LP)        
Schedule of Investments [Line Items]        
Fair value     193 1,263
Investment, Identifier [Axis]: Fuse, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [13],[22]   10,429    
Cost [6],[13],[22]   $ 256    
Fair value [8],[13],[22]   $ 0    
Investment, Identifier [Axis]: Fuse, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [13],[22]   12.00%    
Principal [6],[13],[22]   $ 1,810    
Cost [6],[13],[22]   1,810    
Fair value [8],[13],[22]   $ 323    
Investment, Identifier [Axis]: GFG Group, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 226 [11],[35] 226 [12],[36]    
Cost $ 4,900 [3],[11],[35] $ 4,900 [6],[12],[36]    
Fair value $ 13,060 [7],[11],[35] $ 10,940 [8],[12],[36] 10,940 10,540
Investment, Identifier [Axis]: GFG Group, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.50% [11] 8.00% [12]    
Principal $ 14,173 [3],[11] $ 14,053 [6],[12]    
Cost 14,065 [3],[11] 14,050 [6],[12]    
Fair value $ 14,173 [7],[11] $ 14,053 [8],[12]    
Investment, Identifier [Axis]: GFG Group, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     0 8,185
Investment, Identifier [Axis]: GFG Group, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     $ 0 0
Investment, Identifier [Axis]: GFG Group, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate     8.00%  
Fair value     $ 14,053 0
Investment, Identifier [Axis]: GRT Rubber Technologies LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 5,879 [9],[35] 5,879 [10],[36]    
Cost $ 13,065 [3],[9],[35] $ 13,065 [6],[10],[36]    
Fair value $ 40,180 [7],[9],[35] $ 46,360 [8],[10],[36] $ 46,820 45,890
Investment, Identifier [Axis]: GRT Rubber Technologies LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.79% [9] 9.98% [10] 10.41%  
Spread (as a percent) 6.00% [9],[29] 6.00% [10],[32] 6.00%  
Principal $ 3,146 [3],[9] $ 3,146 [6],[10]    
Cost 3,146 [3],[9] 3,143 [6],[10]    
Fair value $ 3,146 [7],[9] $ 3,146 [8],[10] $ 3,146 3,146
Investment, Identifier [Axis]: GRT Rubber Technologies LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.79% [9] 11.98% [10] 12.41%  
Spread (as a percent) 8.00% [9],[29] 8.00% [10],[32] 8.00%  
Principal $ 40,493 [3],[9] $ 40,493 [6],[10]    
Cost 40,488 [3],[9] 40,452 [6],[10]    
Fair value $ 40,493 [7],[9] $ 40,493 [8],[10] $ 40,493 40,493
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[15],[31] 10.48% [13],[16],[34],[38]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34],[38]    
Principal $ 6,061 [3],[14],[15],[31] $ 6,061 [6],[13],[16],[34],[38]    
Cost 6,057 [3],[14],[15],[31] 6,042 [6],[13],[16],[34],[38]    
Fair value $ 5,742 [7],[14],[15],[31] $ 6,061 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[15],[31] 10.47% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 9,774 [3],[14],[15],[31] $ 10,392 [6],[13],[16],[34]    
Cost 9,765 [3],[14],[15],[31] 10,342 [6],[13],[16],[34]    
Fair value $ 9,260 [7],[14],[15],[31] $ 10,392 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[15],[31] 10.47% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 877 [3],[14],[15],[31] $ 932 [6],[13],[16],[34]    
Cost 876 [3],[14],[15],[31] 928 [6],[13],[16],[34]    
Fair value $ 831 [7],[14],[15],[31] $ 932 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[15],[31] 10.47% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 209 [3],[14],[15],[31] $ 223 [6],[13],[16],[34]    
Cost 209 [3],[14],[15],[31] 222 [6],[13],[16],[34]    
Fair value $ 198 [7],[14],[15],[31] $ 223 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 10.50% [14],[15],[31] 10.47% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 5,656 [3],[14],[15],[31] $ 6,011 [6],[13],[16],[34]    
Cost 5,650 [3],[14],[15],[31] 5,981 [6],[13],[16],[34]    
Fair value $ 5,358 [7],[14],[15],[31] $ 6,011 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14],[15],[31],[43] 10.82% [13],[16],[34],[38]    
Spread (as a percent) 7.00% [14],[15],[29],[31],[43] 7.00% [13],[16],[32],[34],[38]    
Principal $ 353 [3],[14],[15],[31],[43] $ 454 [6],[13],[16],[34],[38]    
Cost 346 [3],[14],[15],[31],[43] 444 [6],[13],[16],[34],[38]    
Fair value $ 320 [7],[14],[15],[31],[43] $ 420 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14],[15],[31] 10.83% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
Principal $ 292 [3],[14],[15],[31] $ 295 [6],[13],[16],[34]    
Cost 286 [3],[14],[15],[31] 286 [6],[13],[16],[34]    
Fair value $ 265 [7],[14],[15],[31] $ 273 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14],[15],[31] 10.82% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
Principal $ 3,514 [3],[14],[15],[31] $ 3,542 [6],[13],[16],[34]    
Cost 3,485 [3],[14],[15],[31] 3,502 [6],[13],[16],[34]    
Fair value $ 3,176 [7],[14],[15],[31] $ 3,266 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [10],[44]   532    
Cost [6],[10],[44]   $ 396    
Fair value [8],[10],[44]   $ 396    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [10],[36]   9,042    
Cost [6],[10],[36]   $ 17,692    
Fair value   113,810 [8],[10],[36] $ 116,660 114,750
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [9],[35] 9,042      
Cost [3],[9],[35] $ 17,692      
Fair value [7],[9],[35] 121,070      
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value 121,070 113,810    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Member Units 1.2        
Schedule of Investments [Line Items]        
Fair value $ 304 $ 396    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [9],[48] 408      
Cost [3],[9],[48] $ 304      
Fair value [7],[9],[48] $ 304      
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [9],[31],[58] 11.19%      
Spread (as a percent) 7.50% [9],[29],[31],[58] 7.50% [10],[32],[33],[34],[59] 7.50%  
Principal $ 1,600 [3],[9],[31],[58] $ 0 [6],[10],[33],[34],[59]    
Cost 1,600 [3],[9],[31],[58] 0 [6],[10],[33],[34],[59]    
Fair value $ 1,600 [7],[9],[31],[58] 0 [8],[10],[33],[34],[59] $ 0 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 11.19%      
Spread (as a percent) 7.50%      
Fair value $ 1,600 0    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 11.19%      
Spread (as a percent) 7.50%      
Fair value $ 74,966 $ 70,526    
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.19% [9],[31],[58] 11.38% [10],[34],[59] 11.50%  
Spread (as a percent) 7.50% [9],[29],[31],[58] 7.50% [10],[32],[34],[59] 7.50%  
Principal $ 74,966 [3],[9],[31],[58] $ 70,526 [6],[10],[34],[59]    
Cost 74,891 [3],[9],[31],[58] 70,436 [6],[10],[34],[59]    
Fair value $ 74,966 [7],[9],[31],[58] $ 70,526 [8],[10],[34],[59] $ 70,726 73,126
Investment, Identifier [Axis]: Garreco, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,200 [9] 1,200 [10]    
Cost $ 1,200 [3],[9] $ 1,200 [6],[10]    
Fair value $ 1,270 [7],[9] $ 1,830 [8],[10] 1,830 2,060
Investment, Identifier [Axis]: Garyline, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16]   705,882    
Cost [6],[13],[16]   $ 706    
Fair value [8],[13],[16]   $ 450    
Investment, Identifier [Axis]: Garyline, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   7.25%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (71)    
Fair value [8],[13],[16],[33],[34]   $ 0    
Investment, Identifier [Axis]: Garyline, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   10.98%    
Spread (as a percent) [13],[16],[32],[34]   7.25%    
Principal [6],[13],[16],[34]   $ 28,606    
Cost [6],[13],[16],[34]   28,203    
Fair value [8],[13],[16],[34]   $ 28,606    
Investment, Identifier [Axis]: Garyline, LLC. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31],[43] 10.79%      
Spread (as a percent) [14],[15],[29],[31],[43] 7.00%      
Principal [3],[14],[15],[31],[43] $ 2,053      
Cost [3],[14],[15],[31],[43] 2,013      
Fair value [7],[14],[15],[31],[43] $ 2,053      
Investment, Identifier [Axis]: Garyline, LLC. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.79%      
Spread (as a percent) [14],[15],[29],[31] 7.00%      
Principal [3],[14],[15],[31] $ 27,878      
Cost [3],[14],[15],[31] 27,648      
Fair value [7],[14],[15],[31] $ 27,877      
Investment, Identifier [Axis]: Garyline, LLC., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 705,882      
Cost [3],[14],[15] $ 706      
Fair value [7],[14],[15] $ 450      
Investment, Identifier [Axis]: GradeEight Corp. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,653 [14],[15] 1,653 [13],[16]    
Cost $ 1,634 [3],[14],[15] $ 1,634 [6],[13],[16]    
Fair value $ 1,220 [7],[14],[15] $ 1,229 [8],[13],[16]    
Investment, Identifier [Axis]: GradeEight Corp. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   11.23%    
Spread (as a percent) 7.00% [14],[15],[29],[30],[31] 7.50% [13],[16],[32],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 853 [6],[13],[16],[34]    
Cost (60) [3],[14],[15],[30],[31] 778 [6],[13],[16],[34]    
Fair value $ 0 [7],[14],[15],[30],[31] $ 834 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GradeEight Corp. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.73% [14],[15],[31] 11.23% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.50% [13],[16],[32],[34]    
Principal $ 4,124 [3],[14],[15],[31] $ 4,176 [6],[13],[16],[34]    
Cost 4,056 [3],[14],[15],[31] 4,090 [6],[13],[16],[34]    
Fair value $ 4,124 [7],[14],[15],[31] $ 4,090 [8],[13],[16],[34]    
Investment, Identifier [Axis]: GradeEight Corp. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.77% [14],[15],[31],[60] 11.31% [13],[16],[34],[61]    
Spread (as a percent) 7.00% [14],[15],[29],[31],[60] 7.25% [13],[16],[32],[34],[61]    
Principal $ 30,220 [3],[14],[15],[31],[60] $ 30,813 [6],[13],[16],[34],[61]    
Cost 29,854 [3],[14],[15],[31],[60] 30,347 [6],[13],[16],[34],[61]    
Fair value $ 30,220 [7],[14],[15],[31],[60] $ 30,135 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: Gulf Manufacturing, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 888 [11],[17],[48] 888 [12],[19],[24],[36],[44]    
Cost $ 888 [3],[11],[17],[48] $ 888 [6],[12],[19],[24],[36],[44]    
Fair value $ 2,150 [7],[11],[17],[48] $ 1,450 [8],[12],[19],[24],[36],[44] 1,450 888
Investment, Identifier [Axis]: Gulf Manufacturing, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 438 [11],[17],[35] 438 [12],[19],[24],[36]    
Cost $ 2,980 [3],[11],[17],[35] $ 2,980 [6],[12],[19],[24],[36]    
Fair value $ 3,410 [7],[11],[17],[35] $ 6,600 [8],[12],[19],[24],[36] $ 14,600 14,730
Investment, Identifier [Axis]: Gulf Manufacturing, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 208 [11],[17] 208 [12],[19],[24]    
Cost $ 2,077 [3],[11],[17] $ 2,077 [6],[12],[19],[24]    
Fair value $ 5,190 [7],[11],[17] $ 5,190 [8],[12],[19],[24]    
Investment, Identifier [Axis]: Gulf Manufacturing, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [11],[17] 11.82%      
Spread (as a percent) 8.13% [11],[17],[29] 8.13% [12],[19],[24],[32],[33] 7.62%  
Principal $ 6,000 [3],[11],[17] $ 0 [6],[12],[19],[24],[33]    
Cost 5,976 [3],[11],[17] (32) [6],[12],[19],[24],[33]    
Fair value $ 5,915 [7],[11],[17] $ (32) [8],[12],[19],[24],[33] $ (34) 0
Investment, Identifier [Axis]: Gulf Manufacturing, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.82% [11],[17] 12.01% [12],[19],[24] 11.94%  
Spread (as a percent) 8.13% [11],[17],[29] 8.13% [12],[19],[24],[32] 7.62%  
Principal $ 36,700 [3],[11],[17] $ 37,700 [6],[12],[19],[24]    
Cost 36,019 [3],[11],[17] 36,784 [6],[12],[19],[24]    
Fair value $ 36,019 [7],[11],[17] $ 36,784 [8],[12],[19],[24] $ 37,244 39,000
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC | Member Units        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Fair value     $ 0 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent)     9.50%  
Fair value     $ 0 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 1,518
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 64,029 [14],[15] 64,029 [13],[16]    
Cost $ 0 [3],[14],[15] $ 0 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 0 [8],[13],[16]    
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.01% [14],[15],[28],[31] 9.01% [13],[16],[27],[34]    
Spread (as a percent) 3.50% [14],[15],[28],[29],[31] 3.50% [13],[16],[27],[32],[34]    
PIK Rate 2.50% [14],[15],[25],[28],[31] 2.50% [13],[16],[26],[27],[34]    
Principal $ 2,607 [3],[14],[15],[28],[31] $ 2,607 [6],[13],[16],[27],[34]    
Cost 2,557 [3],[14],[15],[28],[31] 2,557 [6],[13],[16],[27],[34]    
Fair value $ 952 [7],[14],[15],[28],[31] $ 2,272 [8],[13],[16],[27],[34]    
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 2.50% [14],[15],[28] 2.50% [13],[16],[27]    
PIK Rate 2.50% [14],[15],[25],[28] 2.50% [13],[16],[26],[27]    
Principal $ 1,583 [3],[14],[15],[28] $ 1,626 [6],[13],[16],[27]    
Cost 671 [3],[14],[15],[28] 713 [6],[13],[16],[27]    
Fair value $ 0 [7],[14],[15],[28] $ 0 [8],[13],[16],[27]    
Investment, Identifier [Axis]: HOWLCO LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.49% [14],[17],[21],[23],[31] 10.51% [13],[19],[22],[24],[34]    
Spread (as a percent) 6.50% [14],[17],[21],[23],[29],[31] 6.50% [13],[19],[22],[24],[32],[34]    
PIK Rate 3.50% [14],[17],[21],[23],[25],[31] 3.50% [13],[19],[22],[24],[26],[34]    
Principal $ 27,913 [3],[14],[17],[21],[23],[31] $ 27,185 [6],[13],[19],[22],[24],[34]    
Cost 27,913 [3],[14],[17],[21],[23],[31] 27,185 [6],[13],[19],[22],[24],[34]    
Fair value $ 25,638 [7],[14],[17],[21],[23],[31] $ 26,616 [8],[13],[19],[22],[24],[34]    
Investment, Identifier [Axis]: HPEP 3, L.P. | LP Interests (HPEP 3, L.P.) 1        
Schedule of Investments [Line Items]        
Fair value     4,132 4,472
Investment, Identifier [Axis]: HPEP 3, L.P. | LP Interests (HPEP 3, L.P.) 2        
Schedule of Investments [Line Items]        
Fair value     7,257 5,861
Investment, Identifier [Axis]: HPEP 423 COR, LP | LP Interests (423 COR, L.P.)        
Schedule of Investments [Line Items]        
Fair value     5,244 4,187
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (2717 GRE-LP, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 43.05% [9],[17],[18],[49] 43.05% [10],[19],[20],[50]    
Cost $ 441 [3],[9],[17],[18],[49] $ 441 [6],[10],[19],[20],[50]    
Fair value $ 516 [7],[9],[17],[18],[49] $ 441 [8],[10],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (2717 HPP-MS, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 49.26% [9],[17],[18],[35],[49] 49.26% [10],[19],[20],[50]    
Cost $ 256 [3],[9],[17],[18],[35],[49] $ 256 [6],[10],[19],[20],[50]    
Fair value $ 72 [7],[9],[17],[18],[35],[49] $ 447 [8],[10],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (2717 MH, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 49.26% [9],[17],[18],[49] 49.26% [10],[19],[20],[50]    
Cost $ 1,057 [3],[9],[17],[18],[49] $ 1,158 [6],[10],[19],[20],[50]    
Fair value $ 1,133 [7],[9],[17],[18],[49] $ 1,795 [8],[10],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (423 AER II, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 4.13% [14],[17],[18],[49] 4.13% [13],[19],[20],[50]    
Cost $ 1,678 [3],[14],[17],[18],[49] $ 1,590 [6],[13],[19],[20],[50]    
Fair value $ 2,148 [7],[14],[17],[18],[49] $ 1,590 [8],[13],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (423 COR, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 26.89% [9],[17],[18],[49] 26.89% [10],[19],[20],[50]    
Cost $ 2,900 [3],[9],[17],[18],[49] $ 2,900 [6],[10],[19],[20],[50]    
Fair value $ 4,782 [7],[9],[17],[18],[49] $ 5,244 [8],[10],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (423 HAR, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 15.60% [11],[17],[18],[35],[49] 15.60% [12],[19],[20],[36],[50]    
Cost $ 750 [3],[11],[17],[18],[35],[49] $ 750 [6],[12],[19],[20],[36],[50]    
Fair value $ 1,302 [7],[11],[17],[18],[35],[49] $ 1,226 [8],[12],[19],[20],[36],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (HPEP 3, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 8.22% [11],[17],[18],[49] 8.22% [12],[19],[20],[50]    
Cost $ 1,297 [3],[11],[17],[18],[49] $ 1,549 [6],[12],[19],[20],[50]    
Fair value $ 3,661 [7],[11],[17],[18],[49] $ 4,116 [8],[12],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (HPEP 4, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 11.61% [11],[17],[18],[49] 11.61% [12],[19],[20],[50]    
Cost $ 7,694 [3],[11],[17],[18],[49] $ 6,409 [6],[12],[19],[20],[50]    
Fair value $ 9,920 [7],[11],[17],[18],[49] $ 7,463 [8],[12],[19],[20],[50]    
Investment, Identifier [Axis]: Harris Preston Fund Investments | LP Interests (HPEP 5, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[49] 17.46%      
Cost [3],[14],[17],[18],[49] $ 1,000      
Fair value [7],[14],[17],[18],[49] $ 1,000      
Investment, Identifier [Axis]: Harrison Hydra-Gen, Ltd. | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 107,456 [9],[35] 107,456 [10],[36]    
Cost $ 718 [3],[9],[35] $ 718 [6],[10],[36]    
Fair value $ 6,640 [7],[9],[35] $ 7,080 [8],[10],[36] 7,270 7,010
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 226 [11],[35] 226 [12],[36]    
Cost $ 2,850 [3],[11],[35] $ 2,850 [6],[12],[36]    
Fair value 26,700 [7],[11],[35] 26,310 [8],[12],[36] 24,560 20,260
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value 26,700 26,310    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Fair value $ 1,410 $ 1,380    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 226 [11],[48] 226 [12],[44]    
Cost $ 150 [3],[11],[48] $ 150 [6],[12],[44]    
Fair value $ 1,410 [7],[11],[48] $ 1,380 [8],[12],[44] $ 1,290 1,070
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   9.98% [12],[34] 10.48%  
Spread (as a percent) 6.00% [11],[29],[30],[31] 6.00% [12],[32],[34] 6.00%  
Principal $ 0 [3],[11],[30],[31] $ 3,219 [6],[12],[34]    
Cost (19) [3],[11],[30],[31] 3,219 [6],[12],[34]    
Fair value 0 [7],[11],[30],[31] 3,219 [8],[12],[34] $ 2,170 2,645
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 3,219    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00%      
Fair value $ 0 0    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Fair value $ 0 45,256    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 12.50%      
Fair value $ 49,871 0    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 1.6        
Schedule of Investments [Line Items]        
Total Rate 12.50%      
Fair value $ 7,635 $ 0    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   11.00% [12] 12.00%  
Principal 0 [3],[11],[30] $ 45,256 [6],[12]    
Cost 0 [3],[11],[30] 45,256 [6],[12]    
Fair value $ 0 [7],[11],[30] $ 45,256 [8],[12] $ 45,256 45,256
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [11] 12.50%      
Principal [3],[11] $ 7,635      
Cost [3],[11] 7,598      
Fair value [7],[11] $ 7,635      
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [11] 12.50%      
Principal [3],[11] $ 49,871      
Cost [3],[11] 49,648      
Fair value [7],[11] $ 49,871      
Investment, Identifier [Axis]: Hornblower Sub, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34],[38]   9.32%    
Spread (as a percent) 5.50% [14],[15],[29],[30],[31] 5.50% [13],[16],[32],[34],[38]    
PIK Rate [13],[16],[26],[34],[38]   1.50%    
Principal $ 0 [3],[14],[15],[30],[31] $ 4,752 [6],[13],[16],[34],[38]    
Cost (27) [3],[14],[15],[30],[31] 4,718 [6],[13],[16],[34],[38]    
Fair value $ 0 [7],[14],[15],[30],[31] $ 4,697 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: Hornblower Sub, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.25% [14],[15],[31] 9.46% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
PIK Rate 1.50% [14],[15],[25],[31] 1.50% [13],[16],[26],[34]    
Principal $ 33,179 [3],[14],[15],[31] $ 32,599 [6],[13],[16],[34]    
Cost 32,985 [3],[14],[15],[31] 32,353 [6],[13],[16],[34]    
Fair value $ 33,108 [7],[14],[15],[31] $ 32,163 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Horwitz Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.55%      
Spread (as a percent) [14],[15],[29],[31] 5.50%      
Principal [3],[14],[15],[31] $ 17,109      
Cost [3],[14],[15],[31] 16,652      
Fair value [7],[14],[15],[31] $ 16,746      
Investment, Identifier [Axis]: Horwitz Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 5.50%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (305)      
Fair value [7],[14],[15],[30],[31] $ (305)      
Investment, Identifier [Axis]: Horwitz Holdings, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.57%      
Spread (as a percent) [14],[15],[29],[31] 5.50%      
Principal [3],[14],[15],[31] $ 81,267      
Cost [3],[14],[15],[31] 79,748      
Fair value [7],[14],[15],[31] $ 79,544      
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 347,297 [11],[35] 322,297 [12],[36]    
Cost $ 2,552 [3],[11],[35] $ 2,352 [6],[12],[36]    
Fair value $ 3,390 [7],[11],[35] $ 3,720 [8],[12],[36] $ 4,350 3,930
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC | Unsecured Convertible Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% [11] 10.00% [12] 10.00%  
Principal $ 3,000 [3],[11] $ 3,000 [6],[12]    
Cost 2,975 [3],[11] 3,000 [6],[12]    
Fair value $ 3,000 [7],[11] $ 3,000 [8],[12] $ 3,000 2,940
Investment, Identifier [Axis]: Hybrid Promotions, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.98% [14],[15],[31] 12.24% [13],[16],[34]    
Spread (as a percent) 8.25% [14],[15],[29],[31] 8.25% [13],[16],[32],[34]    
Principal $ 7,200 [3],[14],[15],[31] $ 7,200 [6],[13],[16],[34]    
Cost 7,147 [3],[14],[15],[31] 7,115 [6],[13],[16],[34]    
Fair value $ 7,200 [7],[14],[15],[31] $ 7,200 [8],[13],[16],[34]    
Investment, Identifier [Axis]: IG Investor, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 14,400 [9] 14,400 [10]    
Cost $ 14,400 [3],[9] $ 14,400 [6],[10]    
Fair value $ 35,070 [7],[9] $ 28,030 [8],[10] $ 20,770 16,230
Investment, Identifier [Axis]: IG Investor, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 800 [3],[9] $ 1,600 [6],[10]    
Cost 786 [3],[9] 1,580 [6],[10]    
Fair value $ 800 [7],[9] $ 1,600 [8],[10] $ 1,600 1,572
Investment, Identifier [Axis]: IG Investor, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 31,864 [3],[9] $ 35,064 [6],[10]    
Cost 31,753 [3],[9] 34,890 [6],[10]    
Fair value $ 31,864 [7],[9] $ 35,064 [8],[10] $ 35,064 35,257
Investment, Identifier [Axis]: IG Parent Corporation | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[21],[31] 9.75%      
Spread (as a percent) 5.75% [14],[21],[29],[31] 5.75% [13],[22],[32],[33],[34]    
Principal $ 46 [3],[14],[21],[31] $ 0 [6],[13],[22],[33],[34]    
Cost 40 [3],[14],[21],[31] (8) [6],[13],[22],[33],[34]    
Fair value $ 46 [7],[14],[21],[31] $ 0 [8],[13],[22],[33],[34]    
Investment, Identifier [Axis]: IG Parent Corporation | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.75% [14],[21],[31] 9.57% [13],[22],[34]    
Spread (as a percent) 5.75% [14],[21],[29],[31] 5.75% [13],[22],[32],[34]    
Principal $ 10,048 [3],[14],[21],[31] $ 10,127 [6],[13],[22],[34]    
Cost 10,007 [3],[14],[21],[31] 10,070 [6],[13],[22],[34]    
Fair value $ 10,048 [7],[14],[21],[31] $ 10,127 [8],[13],[22],[34]    
Investment, Identifier [Axis]: IG Parent Corporation | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.75% [14],[21],[31] 9.57% [13],[22],[34]    
Spread (as a percent) 5.75% [14],[21],[29],[31] 5.75% [13],[22],[32],[34]    
Principal $ 4,815 [3],[14],[21],[31] $ 4,853 [6],[13],[22],[34]    
Cost 4,794 [3],[14],[21],[31] 4,822 [6],[13],[22],[34]    
Fair value $ 4,815 [7],[14],[21],[31] $ 4,853 [8],[13],[22],[34]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.90% [11],[31] 11.15% [12],[34] 11.46%  
Spread (as a percent) 7.00% [11],[29],[31] 7.00% [12],[32],[34] 7.00%  
Principal $ 1,180 [3],[11],[31] $ 1,180 [6],[12],[34]    
Cost 1,177 [3],[11],[31] 1,172 [6],[12],[34]    
Fair value $ 1,180 [7],[11],[31] 1,180 [8],[12],[34] $ 1,180 1,180
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 10.90%      
Spread (as a percent) 7.00%      
Fair value $ 1,180 1,180    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.00%      
Fair value $ 0 5,310    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 11.38%      
Spread (as a percent) 7.50%      
Fair value $ 4,935 4,935    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 13.38%      
Spread (as a percent) 9.50%      
Fair value $ 4,935 4,935    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Total Rate 12.38%      
Spread (as a percent) 8.50%      
Fair value $ 7,080 1,770    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 1.6        
Schedule of Investments [Line Items]        
Total Rate 12.38%      
Spread (as a percent) 8.50%      
Fair value $ 3,540 $ 0    
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.38% [11],[31] 11.15% [12],[34]    
Spread (as a percent) 7.50% [11],[29],[31] 7.00% [12],[32],[34]    
Principal $ 4,935 [3],[11],[31] $ 5,310 [6],[12],[34]    
Cost 4,734 [3],[11],[31] 5,295 [6],[12],[34]    
Fair value $ 4,935 [7],[11],[31] $ 5,310 [8],[12],[34] $ 0 994
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.38% [11],[31] 11.15% [12],[34] 11.46%  
Spread (as a percent) 9.50% [11],[29],[31] 7.00% [12],[32],[34] 7.00%  
Principal $ 4,935 [3],[11],[31] $ 4,935 [6],[12],[34]    
Cost 4,734 [3],[11],[31] 4,535 [6],[12],[34]    
Fair value $ 4,935 [7],[11],[31] $ 4,935 [8],[12],[34] $ 2,360 0
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.38% [11],[31] 11.15% [12],[34] 11.46%  
Spread (as a percent) 8.50% [11],[29],[31] 7.00% [12],[32],[34] 7.00%  
Principal $ 7,080 [3],[11],[31] $ 4,935 [6],[12],[34]    
Cost 7,070 [3],[11],[31] 4,535 [6],[12],[34]    
Fair value $ 7,080 [7],[11],[31] $ 4,935 [8],[12],[34] $ 4,935 4,438
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 12.38% [11],[31] 11.15% [12],[34] 11.46%  
Spread (as a percent) 8.50% [11],[29],[31] 7.00% [12],[32],[34] 7.00%  
Principal $ 3,540 [3],[11],[31] $ 1,770 [6],[12],[34]    
Cost 3,539 [3],[11],[31] 1,765 [6],[12],[34]    
Fair value $ 3,540 [7],[11],[31] $ 1,770 [8],[12],[34] $ 4,935 4,438
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Secured Debt 6        
Schedule of Investments [Line Items]        
Total Rate     11.46%  
Spread (as a percent)     7.00%  
Fair value     $ 1,770 0
Investment, Identifier [Axis]: ITA Holdings Group, LLC | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 193,307 [11],[35],[41] 193,307 [12],[36],[42]    
Cost $ 2,091 [3],[11],[35],[41] $ 2,091 [6],[12],[36],[42]    
Fair value $ 11,930 [7],[11],[35],[41] $ 15,230 [8],[12],[36],[42] 13,480 5,690
Investment, Identifier [Axis]: Ignite Visibility LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 8.73% [14],[15],[31] 8.84% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 4,759 [3],[14],[15],[31] $ 4,759 [6],[13],[16],[34]    
Cost 4,707 [3],[14],[15],[31] 4,689 [6],[13],[16],[34]    
Fair value $ 4,759 [7],[14],[15],[31] $ 4,689 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Ignite Visibility LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.73% [14],[15],[31] 10.84% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
Principal $ 4,759 [3],[14],[15],[31] $ 4,759 [6],[13],[16],[34]    
Cost 4,707 [3],[14],[15],[31] 4,689 [6],[13],[16],[34]    
Fair value $ 4,759 [7],[14],[15],[31] $ 4,689 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 849 [14],[15],[35] 849 [13],[16]    
Cost $ 1,166 [3],[14],[15],[35] $ 1,166 [6],[13],[16]    
Fair value $ 1,190 [7],[14],[15],[35] $ 1,090 [8],[13],[16]    
Investment, Identifier [Axis]: Implus Footcare, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 4,238,917 [14],[15] 4,238,917 [13],[16]    
Cost $ 5,680 [3],[14],[15] $ 5,680 [6],[13],[16]    
Fair value $ 5,690 [7],[14],[15] $ 4,910 [8],[13],[16]    
Investment, Identifier [Axis]: Implus Footcare, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.08% [14],[15],[31] 9.68% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
PIK Rate 4.00% [14],[15],[25],[31] 4.00% [13],[16],[26],[34]    
Principal $ 2,003 [3],[14],[15],[31] $ 1,944 [6],[13],[16],[34]    
Cost 2,003 [3],[14],[15],[31] 1,944 [6],[13],[16],[34]    
Fair value $ 2,003 [7],[14],[15],[31] $ 1,944 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Implus Footcare, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.08% [14],[15],[31] 9.68% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
PIK Rate 10.08% [14],[15],[25],[31] 9.68% [13],[16],[26],[34]    
Principal $ 4,759 [3],[14],[15],[31] $ 4,425 [6],[13],[16],[34]    
Cost 4,759 [3],[14],[15],[31] 4,425 [6],[13],[16],[34]    
Fair value $ 4,759 [7],[14],[15],[31] $ 4,425 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 18,006,407 [11],[15] 18,006,407 [12],[16]    
Cost $ 18,300 [3],[11],[15] $ 18,300 [6],[12],[16]    
Fair value $ 18,470 [7],[11],[15] $ 19,000 [8],[12],[16] 19,000 20,390
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 87,360 [11],[35] 87,360 [12],[36]    
Cost $ 4,368 [3],[11],[35] $ 4,368 [6],[12],[36]    
Fair value 21,620 [7],[11],[35] $ 8,010 [8],[12],[36] 6,620 9,080
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12]   12.00%    
Principal [6],[12]   $ 15,299    
Cost [6],[12]   15,289    
Fair value [8],[12]   15,299    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [3],[11],[30] 0      
Cost [3],[11],[30] 0      
Fair value $ 0 [7],[11],[30]   $ 0 15,050
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 11.00%      
Fair value $ 10,959 15,299    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [11]   13.00%  
Principal [3],[11] $ 10,959      
Cost [3],[11] 10,954      
Fair value $ 10,959 [7],[11]   $ 15,524 0
Investment, Identifier [Axis]: Insight Borrower Corporation | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 131,100 [14],[15] 131,100 [13],[16]    
Cost $ 656 [3],[14],[15] $ 656 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 270 [8],[13],[16]    
Investment, Identifier [Axis]: Insight Borrower Corporation | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.10% [14],[15],[31],[43] 10.10% [13],[16],[34]    
Spread (as a percent) 6.25% [14],[15],[29],[31],[43] 6.25% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31],[43] 10.10%      
Principal $ 1,472 [3],[14],[15],[31],[43] $ 1,441 [6],[13],[16],[34]    
Cost 1,443 [3],[14],[15],[31],[43] 1,401 [6],[13],[16],[34]    
Fair value $ 1,236 [7],[14],[15],[31],[43] $ 1,341 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Insight Borrower Corporation | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.98% [14],[15],[31] 10.12% [13],[16],[34]    
Spread (as a percent) 6.25% [14],[15],[29],[31] 6.25% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 9.98%      
Principal $ 14,061 [3],[14],[15],[31] $ 14,118 [6],[13],[16],[34]    
Cost 13,861 [3],[14],[15],[31] 13,865 [6],[13],[16],[34]    
Fair value $ 11,810 [7],[14],[15],[31] $ 13,140 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 177,594 [14],[15] 177,594 [13],[16]    
Cost $ 463 [3],[14],[15] $ 463 [6],[13],[16]    
Fair value $ 97 [7],[14],[15] $ 97 [8],[13],[16]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.28% [14],[15],[31] 13.97% [13],[16],[34]    
Spread (as a percent) 9.50% [14],[15],[29],[31] 10.00% [13],[16],[32],[34]    
PIK Rate 1.50% [14],[15],[25],[31] 2.00% [13],[16],[26],[34]    
Principal $ 868 [3],[14],[15],[31] $ 857 [6],[13],[16],[34]    
Cost 861 [3],[14],[15],[31] 846 [6],[13],[16],[34]    
Fair value $ 826 [7],[14],[15],[31] $ 808 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.28% [14],[15],[31] 13.97% [13],[16],[34]    
Spread (as a percent) 9.50% [14],[15],[29],[31] 10.00% [13],[16],[32],[34]    
PIK Rate 1.50% [14],[15],[25],[31] 2.00% [13],[16],[26],[34]    
Principal $ 7,331 [3],[14],[15],[31] $ 7,307 [6],[13],[16],[34]    
Cost 7,276 [3],[14],[15],[31] 7,224 [6],[13],[16],[34]    
Fair value $ 6,978 [7],[14],[15],[31] $ 6,889 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.28% [14],[15],[31] 13.97% [13],[16],[34]    
Spread (as a percent) 9.50% [14],[15],[29],[31] 10.00% [13],[16],[32],[34]    
PIK Rate 1.50% [14],[15],[25],[31] 2.00% [13],[16],[26],[34]    
Principal $ 2,949 [3],[14],[15],[31] $ 2,941 [6],[13],[16],[34]    
Cost 2,928 [3],[14],[15],[31] 2,910 [6],[13],[16],[34]    
Fair value $ 2,807 [7],[14],[15],[31] $ 2,773 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 13.28% [14],[15],[31] 13.97% [13],[16],[34]    
Spread (as a percent) 9.50% [14],[15],[29],[31] 10.00% [13],[16],[32],[34]    
PIK Rate 1.50% [14],[15],[25],[31] 2.00% [13],[16],[26],[34]    
Principal $ 341 [3],[14],[15],[31] $ 339 [6],[13],[16],[34]    
Cost 341 [3],[14],[15],[31] 339 [6],[13],[16],[34]    
Fair value $ 324 [7],[14],[15],[31] $ 320 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Integral Energy Services | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 9,968 [11],[15] 9,968 [12],[16]    
Cost $ 1,356 [3],[11],[15] $ 1,356 [6],[12],[16]    
Fair value $ 420 [7],[11],[15] $ 350 [8],[12],[16] $ 690 550
Investment, Identifier [Axis]: Integral Energy Services | Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 3,188 [11],[15],[35] 3,188 [12],[16],[36]    
Total Rate 10.00% [11],[15],[35] 10.00% [12],[16],[36] 10.00%  
PIK Rate 10.00% [11],[15],[25],[35] 10.00% [12],[16],[26],[36] 10.00%  
Cost $ 303 [3],[11],[15],[35] $ 281 [6],[12],[16],[36]    
Fair value $ 442 [7],[11],[15],[35] 420 [8],[12],[16],[36] $ 527 452
Investment, Identifier [Axis]: Integral Energy Services | Preferred Equity 1.1        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
PIK Rate 10.00%      
Fair value $ 442 420    
Investment, Identifier [Axis]: Integral Energy Services | Preferred Equity 1.2        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
PIK Rate 10.00%      
Fair value $ 490 $ 404    
Investment, Identifier [Axis]: Integral Energy Services | Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 3,078 [11],[15] 3,078 [12],[16]    
Total Rate 10.00% [11],[15] 10.00% [12],[16] 10.00%  
PIK Rate 10.00% [11],[15],[25] 10.00% [12],[16],[26] 10.00%  
Cost $ 328 [3],[11],[15] $ 328 [6],[12],[16]    
Fair value $ 490 [7],[11],[15] $ 404 [8],[12],[16] $ 190 0
Investment, Identifier [Axis]: Integral Energy Services | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.49% [11],[15],[31] 11.75% [12],[16],[34] 12.05%  
Spread (as a percent) 7.50% [11],[15],[29],[31] 7.50% [12],[16],[32],[34] 7.50%  
Principal $ 12,166 [3],[11],[15],[31] $ 12,273 [6],[12],[16],[34]    
Cost 12,087 [3],[11],[15],[31] 12,240 [6],[12],[16],[34]    
Fair value $ 11,838 [7],[11],[15],[31] $ 12,042 [8],[12],[16],[34] $ 12,030 12,728
Investment, Identifier [Axis]: Interface Security Systems, L.L.C | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 2,143 [14],[15] 2,143 [13],[16]    
Cost $ 0 [3],[14],[15] $ 0 [6],[13],[16]    
Fair value $ 0 [7],[14],[15] $ 0 [8],[13],[16]    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.96% [14],[15],[43],[45] 13.92% [13],[16],[37],[38]    
Spread (as a percent) 10.00% [14],[15],[29],[43],[45] 10.00% [13],[16],[32],[37],[38]    
PIK Rate 13.96% [14],[15],[25],[43],[45] 13.92% [13],[16],[26],[37],[38]    
Principal $ 2,652 [3],[14],[15],[43],[45] $ 2,392 [6],[13],[16],[37],[38]    
Cost 2,652 [3],[14],[15],[43],[45] 2,392 [6],[13],[16],[37],[38]    
Fair value $ 2,424 [7],[14],[15],[43],[45] $ 2,077 [8],[13],[16],[37],[38]    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.74% [14],[15],[28],[31],[45] 11.02% [13],[16],[27],[34],[37]    
Spread (as a percent) 7.00% [14],[15],[28],[29],[31],[45] 7.00% [13],[16],[27],[32],[34],[37]    
PIK Rate 10.74% [14],[15],[25],[28],[31],[45] 11.02% [13],[16],[26],[27],[34],[37]    
Principal $ 7,313 [3],[14],[15],[28],[31],[45] $ 7,313 [6],[13],[16],[27],[34],[37]    
Cost 7,237 [3],[14],[15],[28],[31],[45] 7,237 [6],[13],[16],[27],[34],[37]    
Fair value $ 9 [7],[14],[15],[28],[31],[45] $ 1 [8],[13],[16],[27],[34],[37]    
Investment, Identifier [Axis]: Invincible Boat Company, LLC. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.32% [14],[15],[28],[31] 11.37% [13],[16],[34]    
Spread (as a percent) 7.50% [14],[15],[28],[29],[31] 7.50% [13],[16],[32],[34]    
Principal $ 934 [3],[14],[15],[28],[31] $ 1,452 [6],[13],[16],[34]    
Cost 898 [3],[14],[15],[28],[31] 1,445 [6],[13],[16],[34]    
Fair value $ 597 [7],[14],[15],[28],[31] $ 1,319 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Invincible Boat Company, LLC. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.34% [14],[15],[28],[31],[60] 11.37% [13],[16],[34],[61]    
Spread (as a percent) 7.50% [14],[15],[28],[29],[31],[60] 7.50% [13],[16],[32],[34],[61]    
PIK Rate 11.34% [14],[15],[25],[28],[31],[60] 3.37% [13],[16],[26],[34],[61]    
Principal $ 17,458 [3],[14],[15],[28],[31],[60] $ 16,805 [6],[13],[16],[34],[61]    
Cost 17,425 [3],[14],[15],[28],[31],[60] 16,764 [6],[13],[16],[34],[61]    
Fair value $ 10,850 [7],[14],[15],[28],[31],[60] $ 15,247 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 203,016 [11] 203,016 [12]    
Cost $ 2,756 [3],[11] $ 2,756 [6],[12]    
Fair value $ 3,070 [7],[11] $ 2,700 [8],[12] $ 2,700 2,850
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 711 [11] 711 [12]    
Total Rate 25.00% [11] 25.00% [12] 25.00%  
PIK Rate 25.00% [11],[25] 25.00% [12],[26] 25.00%  
Cost $ 711 [3],[11] $ 711 [6],[12]    
Fair value $ 1,240 [7],[11] 1,030 [8],[12] $ 970 760
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Preferred Equity 1.1        
Schedule of Investments [Line Items]        
Total Rate 25.00%      
PIK Rate 25.00%      
Fair value $ 1,240 1,030    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Preferred Equity 1.2        
Schedule of Investments [Line Items]        
Total Rate 25.00%      
PIK Rate 25.00%      
Fair value $ 155 155    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Preferred Equity 1.3        
Schedule of Investments [Line Items]        
Total Rate 25.00%      
PIK Rate 25.00%      
Fair value $ 136 $ 0    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 155 [11] 155 [12]    
Total Rate 25.00% [11] 25.00% [12] 25.00%  
PIK Rate 25.00% [11],[25] 25.00% [12],[26] 25.00%  
Cost $ 155 [3],[11] $ 155 [6],[12]    
Fair value $ 155 [7],[11] $ 155 [8],[12] $ 155 0
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Preferred Equity 3        
Schedule of Investments [Line Items]        
Units (in shares) [11] 136      
Total Rate [11] 25.00%      
PIK Rate [11],[25] 25.00%      
Cost [3],[11] $ 136      
Fair value [7],[11] 136      
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   13.00% [12] 13.00%  
Principal 0 [3],[11],[30] $ 4,514 [6],[12]    
Cost (15) [3],[11],[30] 4,500 [6],[12]    
Fair value (15) [7],[11],[30] 4,500 [8],[12] $ 4,498 4,493
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value 0 4,500    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value 0 2,931    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Fair value 0 8,944    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Fair value 0 17,569    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Fair value $ 0 9,421    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.6        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 51,015 0    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 1.7        
Schedule of Investments [Line Items]        
Fair value $ (15) $ 0    
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 13.00% [12] 13.00%  
Principal $ 51,497 [3],[11] $ 2,940 [6],[12]    
Cost 51,015 [3],[11] 2,931 [6],[12]    
Fair value $ 51,015 [7],[11] $ 2,931 [8],[12] $ 2,930 2,927
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate   13.00% [12] 13.00%  
Principal [6],[12]   $ 8,944    
Cost [6],[12]   8,944    
Fair value   $ 8,944 [8],[12] $ 8,944 8,944
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate   13.00% [12] 13.00%  
Principal [6],[12]   $ 17,624    
Cost [6],[12]   17,569    
Fair value   $ 17,569 [8],[12] $ 17,562 17,542
Investment, Identifier [Axis]: Iron-Main Investments, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate   13.00% [12] 13.00%  
Principal [6],[12]   $ 9,554    
Cost [6],[12]   9,421    
Fair value   $ 9,421 [8],[12] $ 9,405 9,638
Investment, Identifier [Axis]: Isagenix International, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 198,743 [14],[21] 198,743 [13],[22]    
Cost $ 0 [3],[14],[21] $ 0 [6],[13],[22]    
Fair value $ 0 [7],[14],[21] $ 0 [8],[13],[22]    
Investment, Identifier [Axis]: Isagenix International, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.27% [14],[21],[28],[31] 2.50% [13],[22],[34],[62]    
Spread (as a percent) [14],[21],[28],[29],[31] 8.50%      
PIK Rate [14],[21],[25],[28],[31] 9.77%      
Principal $ 3,159 [3],[14],[21],[28],[31] $ 3,159 [6],[13],[22],[34],[62]    
Cost 2,819 [3],[14],[21],[28],[31] 3,016 [6],[13],[22],[34],[62]    
Fair value $ 458 [7],[14],[21],[28],[31] $ 458 [8],[13],[22],[34],[62]    
Investment, Identifier [Axis]: Island Pump and Tank, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.99% [14],[15],[31] 11.25% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 6.45%      
Principal $ 495 [3],[14],[15],[31] $ 456 [6],[13],[16],[34]    
Cost 491 [3],[14],[15],[31] 452 [6],[13],[16],[34]    
Fair value $ 409 [7],[14],[15],[31] $ 443 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Island Pump and Tank, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.99% [14],[15],[31] 10.25% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 6.45%      
Principal $ 2,285 [3],[14],[15],[31] $ 2,111 [6],[13],[16],[34]    
Cost 2,264 [3],[14],[15],[31] 2,084 [6],[13],[16],[34]    
Fair value $ 1,888 [7],[14],[15],[31] $ 2,048 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Island Pump and Tank, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.99% [14],[15],[31] 11.25% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 6.45%      
Principal $ 2,290 [3],[14],[15],[31] $ 2,111 [6],[13],[16],[34]    
Cost 2,269 [3],[14],[15],[31] 2,084 [6],[13],[16],[34]    
Fair value $ 1,893 [7],[14],[15],[31] $ 2,048 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Island Pump and Tank, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.99% [14],[15],[31] 12.25% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 8.00% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 6.45%      
Principal $ 2,296 [3],[14],[15],[31] $ 2,111 [6],[13],[16],[34]    
Cost 2,275 [3],[14],[15],[31] 2,084 [6],[13],[16],[34]    
Fair value 1,897 [7],[14],[15],[31] 2,048 [8],[13],[16],[34]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Common Equity        
Schedule of Investments [Line Items]        
Fair value $ 1,069 $ 0 $ 0 0
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Common Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,684,211 [9],[15] 1,684,211 [10],[16]    
Cost $ 1,684 [3],[9],[15] $ 1,684 [6],[10],[16]    
Fair value $ 0 [7],[9],[15] $ 0 [8],[10],[16]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Common Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 842,000 [9],[15] 842,000 [10],[16]    
Cost $ 842 [3],[9],[15] $ 842 [6],[10],[16]    
Fair value $ 0 [7],[9],[15] $ 0 [8],[10],[16]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.00% [9],[15],[31] 9.13% [10],[16],[34]    
Spread (as a percent) 6.00% [9],[15],[29],[31] 5.00% [10],[16],[32],[34] 6.25%  
PIK Rate [9],[15],[25],[31] 10.00%      
Principal $ 1,069 [3],[9],[15],[31] $ 6,316 [6],[10],[16],[34]    
Cost 1,069 [3],[9],[15],[31] 6,316 [6],[10],[16],[34]    
Fair value $ 1,069 [7],[9],[15],[31] 6,316 [8],[10],[16],[34] $ 0 7,977
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 9.89%      
Spread (as a percent) 6.00%      
PIK Rate 9.89%      
Fair value $ 13,416 36,429    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 15.00%      
PIK Rate 15.00%      
Fair value $ 0 939    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.00%      
Fair value $ 0 $ 6,316    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.89% [9],[15],[28],[31] 10.13% [10],[16],[34]    
Spread (as a percent) 6.00% [9],[15],[28],[29],[31] 6.00% [10],[16],[32],[34] 6.25%  
PIK Rate 9.89% [9],[15],[25],[28],[31] 10.13% [10],[16],[26],[34]    
Principal $ 36,513 [3],[9],[15],[28],[31] $ 36,513 [6],[10],[16],[34]    
Cost 36,513 [3],[9],[15],[28],[31] 36,513 [6],[10],[16],[34]    
Fair value $ 13,416 [7],[9],[15],[28],[31] $ 36,429 [8],[10],[16],[34] $ 0 33,879
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 15.00% [9],[15],[28] 15.00% [10],[16],[27]    
Spread (as a percent)     6.25%  
PIK Rate 15.00% [9],[15],[25],[28] 15.00% [10],[16],[26],[27]    
Principal $ 16,842 [3],[9],[15],[28] $ 16,842 [6],[10],[16],[27]    
Cost 6,205 [3],[9],[15],[28] 6,205 [6],[10],[16],[27]    
Fair value $ 0 [7],[9],[15],[28] $ 939 [8],[10],[16],[27] $ 0 3,176
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate     10.45%  
Spread (as a percent)     6.00%  
PIK Rate     10.45%  
Fair value     $ 35,412 0
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate     15.00%  
PIK Rate     15.00%  
Fair value     $ 6,205 0
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC | Secured Debt 6        
Schedule of Investments [Line Items]        
Total Rate     9.45%  
Spread (as a percent)     5.00%  
Fair value     $ 6,316 0
Investment, Identifier [Axis]: Jackmont Hospitality, Inc. | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,826,667 [14],[15] 2,826,667 [13],[16]    
Cost $ 110 [3],[14],[15] $ 110 [6],[13],[16]    
Fair value $ 650 [7],[14],[15] $ 750 [8],[13],[16]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.90% [14],[15],[31],[60] 11.01% [13],[16],[34],[61]    
Spread (as a percent) 7.00% [14],[15],[29],[31],[60] 7.00% [13],[16],[32],[34],[61]    
Principal $ 718 [3],[14],[15],[31],[60] $ 751 [6],[13],[16],[34],[61]    
Cost 718 [3],[14],[15],[31],[60] 747 [6],[13],[16],[34],[61]    
Fair value $ 718 [7],[14],[15],[31],[60] $ 751 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.93% [14],[15],[31],[60] 11.23% [13],[16],[34],[61]    
Spread (as a percent) 7.00% [14],[15],[29],[31],[60] 7.00% [13],[16],[32],[34],[61]    
Principal $ 625 [3],[14],[15],[31],[60] $ 625 [6],[13],[16],[34],[61]    
Cost 625 [3],[14],[15],[31],[60] 622 [6],[13],[16],[34],[61]    
Fair value $ 625 [7],[14],[15],[31],[60] $ 625 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.05% [14],[15],[31],[60] 11.11% [13],[16],[34],[61]    
Spread (as a percent) 7.00% [14],[15],[29],[31],[60] 7.00% [13],[16],[32],[34],[61]    
Principal $ 667 [3],[14],[15],[31],[60] $ 667 [6],[13],[16],[34],[61]    
Cost 666 [3],[14],[15],[31],[60] 658 [6],[13],[16],[34],[61]    
Fair value $ 667 [7],[14],[15],[31],[60] $ 667 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.91% [14],[15],[31] 10.84% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
Principal $ 1,659 [3],[14],[15],[31] $ 1,738 [6],[13],[16],[34]    
Cost 1,658 [3],[14],[15],[31] 1,728 [6],[13],[16],[34]    
Fair value $ 1,659 [7],[14],[15],[31] $ 1,738 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 627 [9],[35] 627 [10],[36]    
Cost $ 811 [3],[9],[35] $ 811 [6],[10],[36]    
Fair value $ 12,270 [7],[9],[35] $ 11,540 [8],[10],[36] $ 11,540 11,820
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.75% [9],[29],[30],[31] 6.75% [10],[32],[33],[34] 6.75%  
Principal $ 0 [3],[9],[30],[31] $ 0 [6],[10],[33],[34]    
Cost 0 [3],[9],[30],[31] 0 [6],[10],[33],[34]    
Fair value $ 0 [7],[9],[30],[31] $ 0 [8],[10],[33],[34] $ 0 0
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% [9],[31] 13.75% [10],[34] 14.25%  
Spread (as a percent) 6.75% [9],[29],[31] 6.75% [10],[32],[34] 6.75%  
Principal $ 388 [3],[9],[31] $ 878 [6],[10],[34]    
Cost 388 [3],[9],[31] 878 [6],[10],[34]    
Fair value $ 388 [7],[9],[31] $ 878 [8],[10],[34] $ 1,028 1,498
Investment, Identifier [Axis]: Joerns Healthcare, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 5,461,019 [14],[21] 5,461,019 [13],[22]    
Cost $ 200 [3],[14],[21] $ 200 [6],[13],[22]    
Fair value $ 0 [7],[14],[21] $ 350 [8],[13],[22]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.92% [14],[21],[31] 11.94% [13],[22],[34]    
Spread (as a percent) 8.00% [14],[21],[29],[31] 8.00% [13],[22],[32],[34]    
Principal $ 1,341 [3],[14],[21],[31] $ 1,833 [6],[13],[22],[34]    
Cost 1,341 [3],[14],[21],[31] 1,833 [6],[13],[22],[34]    
Fair value $ 1,341 [7],[14],[21],[31] $ 1,833 [8],[13],[22],[34]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.92% [14],[21],[31] 11.94% [13],[22],[34]    
Spread (as a percent) 8.00% [14],[21],[29],[31] 8.00% [13],[22],[32],[34]    
Principal $ 1,369 [3],[14],[21],[31] $ 1,369 [6],[13],[22],[34]    
Cost 1,369 [3],[14],[21],[31] 1,369 [6],[13],[22],[34]    
Fair value $ 1,306 [7],[14],[21],[31] $ 1,369 [8],[13],[22],[34]    
Investment, Identifier [Axis]: Johnson Downie Opco, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Fair value     $ 23,530 14,550
Investment, Identifier [Axis]: Johnson Downie Opco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     15.00%  
Fair value     $ 1,800 0
Investment, Identifier [Axis]: Johnson Downie Opco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     15.00%  
Fair value     $ 21,507 21,507
Investment, Identifier [Axis]: JorVet Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 109,926 [9],[35] 109,926 [10],[36]    
Cost $ 10,993 [3],[9],[35] $ 10,993 [6],[10],[36]    
Fair value $ 14,820 [7],[9],[35] $ 10,990 [8],[10],[36] $ 12,330 13,180
Investment, Identifier [Axis]: JorVet Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10] 12.00%  
Principal $ 22,973 [3],[9] $ 23,321 [6],[10]    
Cost 22,950 [3],[9] 23,263 [6],[10]    
Fair value 22,950 [7],[9] $ 23,263 [8],[10] $ 23,251 23,216
Investment, Identifier [Axis]: KBK Industries, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [10],[36]   325    
Cost [6],[10],[36]   $ 783    
Fair value 0 $ 18,180 [8],[10],[36] 20,230 25,180
Investment, Identifier [Axis]: KBK Industries, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [10]   9.50%    
Principal [6],[10]   $ 7,200    
Cost [6],[10]   7,166    
Fair value [8],[10]   7,200    
Investment, Identifier [Axis]: KBK Industries, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     $ 0 3,700
Investment, Identifier [Axis]: KBK Industries, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value 0 0    
Investment, Identifier [Axis]: KBK Industries, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 7,200    
Investment, Identifier [Axis]: KBK Industries, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     9.50%  
Fair value     $ 7,800 0
Investment, Identifier [Axis]: KMS, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 9,213 [11],[15],[35] 9,213 [12],[16]    
Cost $ 4,890 [3],[11],[15],[35] $ 4,890 [6],[12],[16]    
Fair value $ 6,270 [7],[11],[15],[35] $ 6,270 [8],[12],[16] $ 5,140 0
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.50% [11],[15],[29],[30],[31] 5.50% [12],[16],[32],[33],[34] 9.75%  
Principal $ 0 [3],[11],[15],[30],[31] $ 0 [6],[12],[16],[33],[34]    
Cost (29) [3],[11],[15],[30],[31] (40) [6],[12],[16],[33],[34]    
Fair value $ 0 [7],[11],[15],[30],[31] (40) [8],[12],[16],[33],[34] $ 0 663
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 12.50%      
Fair value $ 1,173 1,146    
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 12.50%      
Fair value $ 731 1,007    
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.50%      
Fair value $ 0 $ (40)    
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% [11],[15] 12.50% [12],[16]    
Spread (as a percent)     9.75%  
Principal $ 1,173 [3],[11],[15] $ 1,171 [6],[12],[16]    
Cost 1,154 [3],[11],[15] 1,146 [6],[12],[16]    
Fair value $ 1,173 [7],[11],[15] $ 1,146 [8],[12],[16] $ 0 4,779
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.50% [11],[15] 12.50% [12],[16]    
Spread (as a percent)     9.75%  
Principal $ 731 [3],[11],[15] $ 1,007 [6],[12],[16]    
Cost 731 [3],[11],[15] 1,007 [6],[12],[16]    
Fair value $ 731 [7],[11],[15] 1,007 [8],[12],[16] $ 0 450
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Spread (as a percent)     9.75%  
Fair value     $ 0 440
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Spread (as a percent)     9.75%  
Fair value     $ 0 0
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 6        
Schedule of Investments [Line Items]        
Total Rate     12.50%  
PIK Rate     12.50%  
Fair value     $ 1,145 0
Investment, Identifier [Axis]: KMS, LLC | Secured Debt 7        
Schedule of Investments [Line Items]        
Total Rate     12.50%  
PIK Rate     12.50%  
Fair value     $ 1,008 0
Investment, Identifier [Axis]: Kennedy Fab HoldCo, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [11],[35] 11,490      
Cost [3],[11],[35] $ 11,490      
Fair value 15,470 [7],[11],[35] 0    
Investment, Identifier [Axis]: Kennedy Fab HoldCo, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value 0 0    
Investment, Identifier [Axis]: Kennedy Fab HoldCo, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value 0 0    
Investment, Identifier [Axis]: Kennedy Fab HoldCo, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 800 [9],[35],[48] 800 [10],[36],[44]    
Cost $ 992 [3],[9],[35],[48] $ 992 [6],[10],[36],[44]    
Fair value $ 4,250 [7],[9],[35],[48] $ 4,190 [8],[10],[36],[44] 2,760 2,710
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 581 [9],[35] 581 [10],[36]    
Cost $ 12,240 [3],[9],[35] $ 12,240 [6],[10],[36]    
Fair value $ 21,740 [7],[9],[35] $ 17,180 [8],[10],[36] $ 15,930 12,240
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.50% [9] 11.50% [10] 12.00%  
Principal $ 11,509 [3],[9] $ 10,199 [6],[10]    
Cost 11,410 [3],[9] 10,195 [6],[10]    
Fair value $ 11,509 [7],[9] $ 10,195 [8],[10] $ 13,393 14,987
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% [9] 9.00% [10] 9.00%  
Principal $ 3,870 [3],[9] $ 3,910 [6],[10]    
Cost 3,840 [3],[9] 3,878 [6],[10]    
Fair value $ 3,870 [7],[9] $ 3,878 [8],[10] $ 3,891 3,926
Investment, Identifier [Axis]: LBCT Topco LP | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [14] 4,000,000      
Cost [3],[14] $ 4,000      
Fair value [7],[14] $ 4,000      
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P. | LP Interests        
Schedule of Investments [Line Items]        
Units (as a percent) [13],[19],[20],[36],[50]   2.27%    
Cost [6],[13],[19],[20],[36],[50]   $ 0    
Fair value [8],[13],[19],[20],[36],[50]   $ 792    
Investment, Identifier [Axis]: LKCM Headwater Investments | LP Interests (LKCM Headwater CV I Minerals, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) [14],[17],[18],[35],[49] 1.82%      
Cost [3],[14],[17],[18],[35],[49] $ 618      
Fair value [7],[14],[17],[18],[35],[49] $ 618      
Investment, Identifier [Axis]: LLFlex, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.84% [14],[15],[31] 12.14% [13],[16],[34]    
Spread (as a percent) 8.00% [14],[15],[29],[31] 8.00% [13],[16],[32],[34]    
PIK Rate 3.00% [14],[15],[25],[31] 3.00% [13],[16],[26],[34]    
Principal $ 4,215 [3],[14],[15],[31] $ 4,226 [6],[13],[16],[34]    
Cost 4,144 [3],[14],[15],[31] 4,207 [6],[13],[16],[34]    
Fair value $ 3,531 [7],[14],[15],[31] $ 3,328 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Legacy Swim Group | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 366 [9],[35] 366 [10],[36]    
Cost $ 14,996 [3],[9],[35] $ 14,996 [6],[10],[36]    
Fair value $ 14,996 [7],[9],[35] $ 14,996 [8],[10],[36]    
Investment, Identifier [Axis]: Legacy Swim Group | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [10]   13.00%    
Principal [6],[10]   $ 32,000    
Cost [6],[10]   31,691    
Fair value [8],[10]   31,691    
Investment, Identifier [Axis]: Legacy Swim Group | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [9] 13.00%      
Principal [3],[9] $ 805      
Cost [3],[9] 790      
Fair value [7],[9] $ 790      
Investment, Identifier [Axis]: Legacy Swim Group | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 31,739 31,691    
Investment, Identifier [Axis]: Legacy Swim Group | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 790 $ 0    
Investment, Identifier [Axis]: Legacy Swim Group | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [9] 13.00%      
Principal [3],[9] $ 32,000      
Cost [3],[9] 31,739      
Fair value [7],[9] $ 31,739      
Investment, Identifier [Axis]: Logix Acquisition Company, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.74% [14],[15],[31] 11.41% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.50% [13],[16],[32],[34]    
PIK Rate 10.74% [14],[15],[25],[31] 2.75% [13],[16],[26],[34]    
Principal $ 46,499 [3],[14],[15],[31] $ 44,135 [6],[13],[16],[34]    
Cost 45,990 [3],[14],[15],[31] 43,451 [6],[13],[16],[34]    
Fair value 46,499 [7],[14],[15],[31] 44,135 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Logix Acquisition Company, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Principal 2,963 [3],[14],[15],[60] 2,963 [6],[13],[16]    
Cost 2,456 [3],[14],[15],[60] 2,287 [6],[13],[16]    
Fair value $ 2,372 [7],[14],[15],[60] $ 2,204 [8],[13],[16]    
Investment, Identifier [Axis]: Looking Glass Investments, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3 [14],[17],[18] 3 [13],[19],[20]    
Cost $ 125 [3],[14],[17],[18] $ 125 [6],[13],[19],[20]    
Fair value $ 25 [7],[14],[17],[18] $ 25 [8],[13],[19],[20]    
Investment, Identifier [Axis]: MCT Purchaserco Holding Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,590,287 [14],[15],[17],[23] 1,590,287 [13],[16],[19],[24]    
Cost $ 1,139 [3],[14],[15],[17],[23] $ 1,139 [6],[13],[16],[19],[24]    
Fair value $ 1,239 [7],[14],[15],[17],[23] $ 1,139 [8],[13],[16],[19],[24]    
Investment, Identifier [Axis]: MCT Purchaserco Holding Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.57% [14],[15],[17],[23],[31],[43] 9.36% [13],[16],[19],[24],[34]    
Spread (as a percent) 5.50% [14],[15],[17],[23],[29],[31],[43] 5.50% [13],[16],[19],[24],[32],[34]    
Principal $ 11,080 [3],[14],[15],[17],[23],[31],[43] $ 6,097 [6],[13],[16],[19],[24],[34]    
Cost 10,985 [3],[14],[15],[17],[23],[31],[43] 5,985 [6],[13],[16],[19],[24],[34]    
Fair value $ 11,080 [7],[14],[15],[17],[23],[31],[43] $ 5,985 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: MCT Purchaserco Holding Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.57% [14],[15],[17],[23],[31] 9.29% [13],[16],[19],[24],[34]    
Spread (as a percent) 5.50% [14],[15],[17],[23],[29],[31] 5.50% [13],[16],[19],[24],[32],[34]    
Principal $ 39,457 [3],[14],[15],[17],[23],[31] $ 39,755 [6],[13],[16],[19],[24],[34]    
Cost 39,126 [3],[14],[15],[17],[23],[31] 39,364 [6],[13],[16],[19],[24],[34]    
Fair value $ 39,457 [7],[14],[15],[17],[23],[31] $ 39,364 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: MS Private Loan Fund I, LP | LP Interests        
Schedule of Investments [Line Items]        
Units (as a percent) 14.51% [9],[17],[18],[35],[49] 14.51% [10],[19],[20],[36],[50]    
Cost $ 15,000 [3],[9],[17],[18],[35],[49] $ 15,000 [6],[10],[19],[20],[36],[50]    
Fair value $ 14,195 [7],[9],[17],[18],[35],[49] $ 14,697 [8],[10],[19],[20],[36],[50] $ 13,832 14,034
Investment, Identifier [Axis]: MS Private Loan Fund I, LP | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 6.69% [9],[17],[18],[31] 6.88% [10],[19],[20],[34] 7.31%  
Spread (as a percent) 3.00% [9],[17],[18],[29],[31] 3.00% [10],[19],[20],[32],[34] 3.00%  
Principal $ 17,310 [3],[9],[17],[18],[31] $ 12,000 [6],[10],[19],[20],[34]    
Cost 17,310 [3],[9],[17],[18],[31] 12,000 [6],[10],[19],[20],[34]    
Fair value $ 17,310 [7],[9],[17],[18],[31] $ 12,000 [8],[10],[19],[20],[34] $ 8,700 1,600
Investment, Identifier [Axis]: MS Private Loan Fund II, LP | LP Interests        
Schedule of Investments [Line Items]        
Units (as a percent) 12.46% [9],[17],[18],[35],[49] 12.46% [10],[19],[20],[36],[50]    
Cost $ 12,750 [3],[9],[17],[18],[35],[49] $ 10,500 [6],[10],[19],[20],[36],[50]    
Fair value $ 13,488 [7],[9],[17],[18],[35],[49] $ 11,064 [8],[10],[19],[20],[36],[50] $ 9,564 7,843
Investment, Identifier [Axis]: MS Private Loan Fund II, LP | Secured Debt        
Schedule of Investments [Line Items]        
Spread (as a percent) 3.00% [9],[17],[18],[29],[30],[31] 3.00% [10],[19],[20],[32],[33],[34] 3.00%  
Principal $ 0 [3],[9],[17],[18],[30],[31] $ 0 [6],[10],[19],[20],[33],[34]    
Cost (64) [3],[9],[17],[18],[30],[31] (84) [6],[10],[19],[20],[33],[34]    
Fair value $ (64) [7],[9],[17],[18],[30],[31] $ (84) [8],[10],[19],[20],[33],[34] $ (91) (59)
Investment, Identifier [Axis]: MSC Adviser I, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (as a percent) 100.00% [9],[35],[63] 100.00% [10],[36],[64]    
Cost $ 29,500 [3],[9],[35],[63] $ 29,500 [6],[10],[36],[64]    
Fair value $ 222,700 [7],[9],[35],[63] $ 255,020 [8],[10],[36],[64] 266,350 246,000
Investment, Identifier [Axis]: MSC Income Fund, Inc. | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,078,997 [9],[17],[18],[35] 1,642,635 [10],[19],[20],[36]    
Cost $ 30,683 [3],[9],[17],[18],[35] $ 25,082 [6],[10],[19],[20],[36]    
Fair value $ 24,470 [7],[9],[17],[18],[35] 21,412 [8],[10],[19],[20],[36] 18,333 16,810
Investment, Identifier [Axis]: MSC Income Fund, Inc. | Secured Debt        
Schedule of Investments [Line Items]        
Spread (as a percent) [9],[17],[18],[29],[30],[31] 4.50%      
Principal [3],[9],[17],[18],[30],[31] $ 0      
Cost [3],[9],[17],[18],[30],[31] (127)      
Fair value $ (127) [7],[9],[17],[18],[30],[31] $ 0    
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular) | Preferred Equity        
Schedule of Investments [Line Items]        
Fair value     $ 4,770 0
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular) | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate     13.00%  
Fair value     $ 9,763 0
Investment, Identifier [Axis]: MVI MSO, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 270 [9],[35] 270 [10],[36]    
Cost $ 2,700 [3],[9],[35] $ 2,700 [6],[10],[36]    
Fair value $ 3,430 [7],[9],[35] $ 4,770 [8],[10],[36]    
Investment, Identifier [Axis]: MVI MSO, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10]    
Principal $ 9,850 [3],[9] $ 9,850 [6],[10]    
Cost 9,782 [3],[9] 9,768 [6],[10]    
Fair value $ 9,782 [7],[9] $ 9,768 [8],[10]    
Investment, Identifier [Axis]: Metalforming Holdings, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,537,219 [9],[35] 1,537,219 [10],[36]    
Cost $ 1,537 [3],[9],[35] $ 1,537 [6],[10],[36]    
Fair value $ 10,670 [7],[9],[35] $ 9,770 [8],[10],[36] $ 9,480 6,850
Investment, Identifier [Axis]: Metalforming Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 5,915,585 [9],[35] 5,915,585 [10],[36]    
Total Rate 8.00% [9],[35] 8.00% [10],[36] 8.00%  
PIK Rate 8.00% [9],[25],[35] 8.00% [10],[26],[36] 8.00%  
Cost $ 5,916 [3],[9],[35] $ 5,916 [6],[10],[36]    
Fair value 5,916 [7],[9],[35] 5,916 [8],[10],[36] $ 5,916 6,397
Investment, Identifier [Axis]: Metalforming Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33],[37]    
Cost (3) [3],[9],[30] 0 [6],[10],[33],[37]    
Fair value 0 [7],[9],[30] 0 [8],[10],[33],[37] $ 0 (11)
Investment, Identifier [Axis]: Metalforming Holdings, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Metalforming Holdings, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 9.75%      
Fair value $ 17,237 $ 17,237    
Investment, Identifier [Axis]: Metalforming Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.75% [9] 8.75% [10] 8.75%  
Principal $ 17,237 [3],[9] $ 17,237 [6],[10]    
Cost 17,200 [3],[9] 17,175 [6],[10]    
Fair value $ 17,237 [7],[9] $ 17,237 [8],[10] $ 17,788 20,844
Investment, Identifier [Axis]: Microbe Formulas, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.50% [14],[15],[29],[30],[31] 5.50% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (18) [3],[14],[15],[30],[31] (27) [6],[13],[16],[33],[34]    
Fair value $ (18) [7],[14],[15],[30],[31] $ (27) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Microbe Formulas, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.50% [14],[15],[31] 9.32% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
Principal $ 10,939 [3],[14],[15],[31] $ 11,023 [6],[13],[16],[34]    
Cost 10,871 [3],[14],[15],[31] 10,920 [6],[13],[16],[34]    
Fair value $ 10,939 [7],[14],[15],[31] $ 11,023 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Microbe Formulas, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.50% [14],[15],[31] 9.32% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
Principal $ 10,645 [3],[14],[15],[31] $ 13,886 [6],[13],[16],[34]    
Cost 10,590 [3],[14],[15],[31] 13,779 [6],[13],[16],[34]    
Fair value $ 10,645 [7],[14],[15],[31] 13,886 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Midstream Valve Partners, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [9] 10,285      
Cost [3],[9] $ 10,285      
Fair value $ 10,285 [7],[9] 0    
Investment, Identifier [Axis]: Midstream Valve Partners, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [9] 14.00%      
Principal [3],[9] $ 29,000      
Cost [3],[9] 28,720      
Fair value $ 28,720 [7],[9] $ 0    
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 66,306 [11],[15],[35],[48] 66,306 [12],[16],[44]    
Cost $ 15,791 [3],[11],[15],[35],[48] $ 14,946 [6],[12],[16],[44]    
Fair value $ 14,250 [7],[11],[15],[35],[48] $ 12,557 [8],[12],[16],[44] $ 12,280 13,840
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.32% [11],[15],[31] 9.81% [12],[16],[34] 9.78%  
Spread (as a percent) 5.50% [11],[15],[29],[31] 5.50% [12],[16],[32],[34] 5.50%  
PIK Rate 9.32% [11],[15],[25],[31] 9.81% [12],[16],[26],[34] 9.78%  
Principal $ 3,100 [3],[11],[15],[31] $ 2,903 [6],[12],[16],[34]    
Cost 3,100 [3],[11],[15],[31] 2,903 [6],[12],[16],[34]    
Fair value $ 3,051 [7],[11],[15],[31] $ 2,796 [8],[12],[16],[34] $ 2,832 0
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.21% [11],[15],[31],[60] 9.32% [12],[16],[34],[61] 9.70%  
Spread (as a percent) 5.50% [11],[15],[29],[31],[60] 5.50% [12],[16],[32],[34],[61] 5.50%  
PIK Rate 9.21% [11],[15],[25],[31],[60] 9.32% [12],[16],[26],[34],[61] 9.70%  
Principal $ 1,849 [3],[11],[15],[31],[60] $ 1,729 [6],[12],[16],[34],[61]    
Cost 1,849 [3],[11],[15],[31],[60] 1,729 [6],[12],[16],[34],[61]    
Fair value $ 1,820 [7],[11],[15],[31],[60] $ 1,664 [8],[12],[16],[34],[61] $ 1,672 0
Investment, Identifier [Axis]: Mini Melts of America, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 524,888 [14],[15] 524,888 [13],[16]    
Cost $ 525 [3],[14],[15] $ 525 [6],[13],[16]    
Fair value $ 140 [7],[14],[15] $ 280 [8],[13],[16]    
Investment, Identifier [Axis]: Mini Melts of America, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.09% [14],[15],[31],[43] 10.06% [13],[16],[34],[38]    
Spread (as a percent) 6.25% [14],[15],[29],[31],[43] 6.25% [13],[16],[32],[34],[38]    
Principal $ 1,724 [3],[14],[15],[31],[43] $ 1,425 [6],[13],[16],[34],[38]    
Cost 1,705 [3],[14],[15],[31],[43] 1,400 [6],[13],[16],[34],[38]    
Fair value $ 1,619 [7],[14],[15],[31],[43] $ 1,361 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: Mini Melts of America, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.05% [14],[15],[31],[60] 10.05% [13],[16],[34],[61]    
Spread (as a percent) 6.25% [14],[15],[29],[31],[60] 6.25% [13],[16],[32],[34],[61]    
Principal $ 1,295 [3],[14],[15],[31],[60] $ 1,305 [6],[13],[16],[34],[61]    
Cost 1,280 [3],[14],[15],[31],[60] 1,285 [6],[13],[16],[34],[61]    
Fair value $ 1,217 [7],[14],[15],[31],[60] $ 1,246 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: Mini Melts of America, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.01% [14],[15],[31] 9.07% [13],[16],[34]    
Spread (as a percent) 5.25% [14],[15],[29],[31] 5.25% [13],[16],[32],[34]    
Principal $ 4,567 [3],[14],[15],[31] $ 4,833 [6],[13],[16],[34]    
Cost 4,519 [3],[14],[15],[31] 4,764 [6],[13],[16],[34]    
Fair value $ 4,290 [7],[14],[15],[31] $ 4,615 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Mini Melts of America, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 11.01% [14],[15],[31] 11.07% [13],[16],[34]    
Spread (as a percent) 7.25% [14],[15],[29],[31] 7.25% [13],[16],[32],[34]    
Principal $ 4,567 [3],[14],[15],[31] $ 4,833 [6],[13],[16],[34]    
Cost 4,517 [3],[14],[15],[31] 4,762 [6],[13],[16],[34]    
Fair value $ 4,287 [7],[14],[15],[31] $ 4,597 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Mission Critical Group | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,366 [14],[15],[35] 1,234 [13],[16]    
Cost $ 4,077 [3],[14],[15],[35] $ 1,234 [6],[13],[16]    
Fair value $ 44,870 [7],[14],[15],[35] $ 15,530 [8],[13],[16]    
Investment, Identifier [Axis]: Mission Critical Group | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 8.99%      
Spread (as a percent) 5.25% [14],[15],[29],[31] 5.50% [13],[16],[32],[33],[34]    
Principal $ 3,747 [3],[14],[15],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 3,670 [3],[14],[15],[31] (196) [6],[13],[16],[33],[34]    
Fair value $ 3,747 [7],[14],[15],[31] $ (196) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Mission Critical Group | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.33%    
Spread (as a percent) 5.25% [14],[15],[29],[30],[31] 5.50% [13],[16],[32],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 14,698 [6],[13],[16],[34]    
Cost (221) [3],[14],[15],[30],[31] 14,274 [6],[13],[16],[34]    
Fair value $ (221) [7],[14],[15],[30],[31] $ 14,698 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Mission Critical Group | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 8.99% [14],[15],[31] 9.23% [13],[16],[34]    
Spread (as a percent) 5.25% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
Principal $ 111,284 [3],[14],[15],[31] $ 66,099 [6],[13],[16],[34]    
Cost 109,913 [3],[14],[15],[31] 64,972 [6],[13],[16],[34]    
Fair value $ 111,284 [7],[14],[15],[31] $ 66,099 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Moffitt Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 14,300 [9] 14,300 [10]    
Cost $ 14,300 [3],[9] $ 14,300 [6],[10]    
Fair value $ 16,860 [7],[9] $ 15,560 [8],[10] $ 15,560 0
Investment, Identifier [Axis]: Moffitt Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 32,813 [3],[9] $ 34,125 [6],[10]    
Cost 32,586 [3],[9] 33,840 [6],[10]    
Fair value $ 32,586 [7],[9] $ 33,840 [8],[10] $ 34,257 0
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 163,282 [11],[35] 163,282 [12],[36]    
Total Rate 12.00% [11],[35] 12.00% [12],[36] 12.00%  
PIK Rate 12.00% [11],[25],[35] 12.00% [12],[26],[36] 12.00%  
Cost $ 2,105 [3],[11],[35] $ 1,924 [6],[12],[36]    
Fair value $ 3,476 [7],[11],[35] $ 2,112 [8],[12],[36] $ 1,867 1,707
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.50% [11] 14.00% [12] 14.00%  
Principal $ 6,385 [3],[11] $ 8,160 [6],[12]    
Cost 6,096 [3],[11] 7,696 [6],[12]    
Fair value $ 6,096 [7],[11] $ 7,696 [8],[12] $ 8,464 8,967
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 59,368 [11],[41] 59,368 [12],[42]    
Cost $ 594 [3],[11],[41] $ 594 [6],[12],[42]    
Fair value $ 1,210 [7],[11],[41] $ 800 [8],[12],[42] 594 594
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Common Shares        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15],[17],[23] 112,902,728      
Cost [3],[14],[15],[17],[23] $ 1,221      
Fair value [7],[14],[15],[17],[23] $ 461      
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [13],[16],[19],[24]   106,608,424    
Cost [6],[13],[16],[19],[24]   $ 1,150    
Fair value [8],[13],[16],[19],[24]   $ 707    
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.00% [14],[15],[17],[23] 10.18% [13],[16],[19],[24],[34]    
Spread (as a percent) [13],[16],[19],[24],[32],[34]   6.25%    
PIK Rate [14],[15],[17],[23],[25] 6.00%      
Principal $ 4,227 [3],[14],[15],[17],[23] $ 4,101 [6],[13],[16],[19],[24],[34]    
Cost 4,215 [3],[14],[15],[17],[23] 4,080 [6],[13],[16],[19],[24],[34]    
Fair value $ 4,330 [7],[14],[15],[17],[23] $ 4,417 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% [14],[15],[17],[23] 10.18% [13],[16],[19],[24],[34]    
Spread (as a percent) [13],[16],[19],[24],[32],[34]   6.25%    
PIK Rate [14],[15],[17],[23],[25] 6.00%      
Principal $ 7,339 [3],[14],[15],[17],[23] $ 10,661 [6],[13],[16],[19],[24],[34]    
Cost 7,316 [3],[14],[15],[17],[23] 10,602 [6],[13],[16],[19],[24],[34]    
Fair value $ 8,117 [7],[14],[15],[17],[23] $ 12,399 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.00% [14],[15],[17],[23] 10.18% [13],[16],[19],[24],[34]    
Spread (as a percent) [13],[16],[19],[24],[32],[34]   6.25%    
PIK Rate [14],[15],[17],[23],[25] 6.00%      
Principal $ 18,443 [3],[14],[15],[17],[23] $ 17,933 [6],[13],[16],[19],[24],[34]    
Cost 18,388 [3],[14],[15],[17],[23] 17,839 [6],[13],[16],[19],[24],[34]    
Fair value $ 18,151 [7],[14],[15],[17],[23] $ 17,933 [8],[13],[16],[19],[24],[34]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[19],[24],[34]   10.18%    
Spread (as a percent) [13],[16],[19],[24],[32],[34]   6.25%    
Principal [6],[13],[16],[19],[24],[34]   $ 1,231    
Cost [6],[13],[16],[19],[24],[34]   1,214    
Fair value [8],[13],[16],[19],[24],[34]   $ 1,244    
Investment, Identifier [Axis]: MonitorUS Holding, LLC | Unsecured Debt        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[19],[24]   8.00%    
PIK Rate [13],[16],[19],[24],[26]   8.00%    
Principal [6],[13],[16],[19],[24]   $ 81    
Cost [6],[13],[16],[19],[24]   81    
Fair value [8],[13],[16],[19],[24]   $ 81    
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC | Common Stock        
Schedule of Investments [Line Items]        
Fair value     26,780 26,370
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     $ 0 0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     10.00%  
Fair value     $ 5,746 5,746
Investment, Identifier [Axis]: NAPCO Precast, LLC | Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,955 [9],[35] 2,955 [10],[36]    
Cost $ 4,145 [3],[9],[35] $ 4,145 [6],[10],[36]    
Fair value $ 10,260 [7],[9],[35] $ 14,480 [8],[10],[36] 11,160 9,050
Investment, Identifier [Axis]: NAPCO Precast, LLC | Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 468 [9],[35],[48] 468 [10],[44]    
Cost $ 185 [3],[9],[35],[48] $ 0 [6],[10],[44]    
Fair value $ 870 [7],[9],[35],[48] $ 568 [8],[10],[44] 2,760 0
Investment, Identifier [Axis]: NRP Jones, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 927,581 [9],[35],[48] 927,581 [10],[44]    
Cost $ 928 [3],[9],[35],[48] $ 928 [6],[10],[44]    
Fair value 928 [7],[9],[35],[48] $ 928 [8],[10],[44] 928 0
Investment, Identifier [Axis]: NRP Jones, LLC | Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [10]   74,761    
Cost [6],[10]   $ 114    
Fair value 0 $ 0 [8],[10] 279 2,696
Investment, Identifier [Axis]: NRP Jones, LLC | Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [10]   74,761    
Cost [6],[10]   $ 3,823    
Fair value 0 $ 0 [8],[10] 11 94
Investment, Identifier [Axis]: NRP Jones, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [10]   495,000    
Cost [6],[10]   $ 482    
Fair value 0 $ 0 [8],[10] $ 1,238 0
Investment, Identifier [Axis]: NRP Jones, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   12.00% [10],[27] 12.00%  
Principal [6],[10],[27]   $ 2,191    
Cost [6],[10],[27]   2,161    
Fair value $ 0 $ 474 [8],[10],[27] $ 2,046 2,178
Investment, Identifier [Axis]: Nearshore AcquireCo, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 10,520,000 [11] 10,520,000 [12]    
Cost $ 5,260 [3],[11] $ 5,260 [6],[12]    
Fair value 6,000 [7],[11] 5,260 [8],[12]    
Investment, Identifier [Axis]: Nearshore AcquireCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[11],[30] 0 [6],[12],[33]    
Cost (20) [3],[11],[30] (24) [6],[12],[33]    
Fair value (20) [7],[11],[30] (24) [8],[12],[33]    
Investment, Identifier [Axis]: Nearshore AcquireCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Principal 0 [3],[11],[30] 0 [6],[12],[33]    
Cost (51) [3],[11],[30] (61) [6],[12],[33]    
Fair value $ (51) [7],[11],[30] $ (61) [8],[12],[33]    
Investment, Identifier [Axis]: Nearshore AcquireCo, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 13.00% [12]    
Principal $ 21,900 [3],[11] $ 21,900 [6],[12]    
Cost 21,721 [3],[11] 21,688 [6],[12]    
Fair value $ 21,721 [7],[11] $ 21,688 [8],[12]    
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Fair value     $ 0 32,040
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent)     7.00%  
Fair value     $ 0 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 62,200
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Fair value     0 4,650
Investment, Identifier [Axis]: Nello Industries Investco, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 336,803 [9],[35] 336,803 [10],[36]    
Cost $ 11,197 [3],[9],[35] $ 11,197 [6],[10],[36]    
Fair value $ 39,290 [7],[9],[35] $ 23,330 [8],[10],[36]    
Investment, Identifier [Axis]: Nello Industries Investco, LLC | Preferred Stock        
Schedule of Investments [Line Items]        
Fair value     $ 20,260 15,560
Investment, Identifier [Axis]: Nello Industries Investco, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.50% [9] 12.50% [10]    
Principal $ 41,344 [3],[9] $ 32,072 [6],[10]    
Cost 41,171 [3],[9] 31,867 [6],[10]    
Fair value 41,344 [7],[9] 32,072 [8],[10]    
Investment, Identifier [Axis]: Nello Industries Investco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent)     6.50%  
Fair value $ 0 32,072 $ 0 (16)
Investment, Identifier [Axis]: Nello Industries Investco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50%   12.50%  
Fair value $ 41,344 $ 0 $ 29,452 26,959
Investment, Identifier [Axis]: NexRev LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 103,144,186 [9] 103,144,186 [10],[36]    
Cost $ 8,213 [3],[9] $ 8,213 [6],[10],[36]    
Fair value $ 12,800 [7],[9] $ 12,870 [8],[10],[36] 12,260 11,910
Investment, Identifier [Axis]: NexRev LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: NexRev LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 9,811
Investment, Identifier [Axis]: Nexus Power Enterprises, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 1,600,000      
Cost [3],[14],[15] $ 1,600      
Fair value [7],[14],[15] $ 1,600      
Investment, Identifier [Axis]: Nexus Power Enterprises, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 5.50%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (91)      
Fair value [7],[14],[15],[30],[31] $ (91)      
Investment, Identifier [Axis]: Nexus Power Enterprises, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 5.50%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (91)      
Fair value [7],[14],[15],[30],[31] $ (91)      
Investment, Identifier [Axis]: Nexus Power Enterprises, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.24%      
Spread (as a percent) [14],[15],[29],[31] 5.50%      
Principal [3],[14],[15],[31] $ 35,112      
Cost [3],[14],[15],[31] 34,612      
Fair value [7],[14],[15],[31] $ 34,612      
Investment, Identifier [Axis]: NuStep, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,400 [9] 2,400 [10]    
Cost $ 2,785 [3],[9] $ 2,785 [6],[10]    
Fair value 6,660 [7],[9] 6,110 [8],[10] 12,200 11,550
Investment, Identifier [Axis]: NuStep, LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value 10,230 12,200    
Investment, Identifier [Axis]: NuStep, LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Fair value $ 6,660 $ 6,110    
Investment, Identifier [Axis]: NuStep, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 486 [9] 486 [10]    
Cost $ 11,866 [3],[9] $ 11,866 [6],[10]    
Fair value $ 10,230 [7],[9] $ 12,200 [8],[10] $ 6,000 6,000
Investment, Identifier [Axis]: NuStep, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.29% [9],[31] 10.48% [10],[34],[37] 10.91%  
Spread (as a percent) 6.50% [9],[29],[31] 6.50% [10],[32],[34],[37] 6.50%  
Principal $ 2,600 [3],[9],[31] $ 1,000 [6],[10],[34],[37]    
Cost 2,600 [3],[9],[31] 1,000 [6],[10],[34],[37]    
Fair value $ 2,600 [7],[9],[31] 1,000 [8],[10],[34],[37] $ 2,200 3,600
Investment, Identifier [Axis]: NuStep, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 10.29%      
Spread (as a percent) 6.50%      
Fair value $ 2,600 1,000    
Investment, Identifier [Axis]: NuStep, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
Fair value $ 18,202 $ 18,440    
Investment, Identifier [Axis]: NuStep, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10],[37] 12.00%  
Principal $ 18,440 [3],[9] $ 18,440 [6],[10],[37]    
Cost 18,202 [3],[9] 18,440 [6],[10],[37]    
Fair value $ 18,202 [7],[9] 18,440 [8],[10],[37] $ 18,440 18,439
Investment, Identifier [Axis]: OMi Topco, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [9],[35] 900      
Cost [3],[9],[35] $ 1,080      
Fair value $ 79,620 [7],[9],[35] $ 77,900    
Investment, Identifier [Axis]: OMi Topco, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [10],[36]   900    
Cost [6],[10],[36]   $ 1,080    
Fair value   $ 77,900 [8],[10],[36] 77,900 72,720
Investment, Identifier [Axis]: OMi Topco, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10]    
Principal $ 29,000 [3],[9] $ 29,000 [6],[10]    
Cost 28,964 [3],[9] 28,956 [6],[10]    
Fair value $ 29,000 [7],[9] $ 29,000 [8],[10]    
Investment, Identifier [Axis]: OMi Topco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     0 9,000
Investment, Identifier [Axis]: OMi Topco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: OMi Topco, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Fair value     $ 0 0
Investment, Identifier [Axis]: OMi Topco, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate     12.00%  
Fair value     $ 24,000 0
Investment, Identifier [Axis]: Obra Capital, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 8.00% [14],[15],[29],[30],[31] 7.25% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (3) [3],[14],[15],[30],[31] (3) [6],[13],[16],[33],[34]    
Fair value $ (3) [7],[14],[15],[30],[31] $ (3) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: Obra Capital, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [14],[15],[31] 11.09% [13],[16],[34]    
Spread (as a percent) 8.00% [14],[15],[29],[31] 7.25% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 0.50%      
Principal $ 25,945 [3],[14],[15],[31] $ 26,089 [6],[13],[16],[34]    
Cost 25,298 [3],[14],[15],[31] 25,549 [6],[13],[16],[34]    
Fair value $ 25,945 [7],[14],[15],[31] $ 26,089 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Obra Capital, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% [14],[15],[31] 11.09% [13],[16],[34]    
Spread (as a percent) 8.00% [14],[15],[29],[31] 7.25% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 0.50%      
Principal $ 3,138 [3],[14],[15],[31] $ 3,155 [6],[13],[16],[34]    
Cost 3,048 [3],[14],[15],[31] 3,075 [6],[13],[16],[34]    
Fair value $ 3,138 [7],[14],[15],[31] $ 3,155 [8],[13],[16],[34]    
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 635 [11] 635 [12]    
Cost $ 830 [3],[11] $ 830 [6],[12]    
Fair value $ 0 [7],[11] $ 0 [8],[12] $ 0 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 912 [11] 912 [12]    
Total Rate 7.00% [11] 7.00% [12] 7.00%  
PIK Rate 7.00% [11],[25] 7.00% [12],[26] 7.00%  
Cost $ 1,981 [3],[11] $ 1,981 [6],[12]    
Fair value $ 0 [7],[11] $ 0 [8],[12] $ 0 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [11],[28] 12.00% [12],[27] 12.00%  
PIK Rate 12.00% [11],[25],[28] 12.00% [12],[26],[27] 12.00%  
Principal $ 4,415 [3],[11],[28] $ 4,415 [6],[12],[27]    
Cost 4,415 [3],[11],[28] 4,415 [6],[12],[27]    
Fair value $ 2,682 [7],[11],[28] 645 [8],[12],[27] $ 99 99
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
PIK Rate 12.00%      
Fair value $ 585 141    
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
PIK Rate 12.00%      
Fair value $ 597 144    
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
PIK Rate 12.00%      
Fair value $ 1,285 309    
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
PIK Rate 12.00%      
Fair value $ 2,682 $ 645    
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [11],[28] 12.00% [12],[27] 12.00%  
PIK Rate 12.00% [11],[25],[28] 12.00% [12],[26],[27] 12.00%  
Principal $ 2,116 [3],[11],[28] $ 2,116 [6],[12],[27]    
Cost 2,116 [3],[11],[28] 2,116 [6],[12],[27]    
Fair value $ 1,285 [7],[11],[28] $ 309 [8],[12],[27] $ 100 102
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% [11],[28] 12.00% [12],[27] 12.00%  
PIK Rate 12.00% [11],[25],[28] 12.00% [12],[26],[27] 12.00%  
Principal $ 983 [3],[11],[28] $ 983 [6],[12],[27]    
Cost 983 [3],[11],[28] 983 [6],[12],[27]    
Fair value $ 597 [7],[11],[28] $ 144 [8],[12],[27] $ 218 218
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.00% [11],[28] 12.00% [12],[27] 12.00%  
PIK Rate 12.00% [11],[25],[28] 12.00% [12],[26],[27] 12.00%  
Principal $ 964 [3],[11],[28] $ 964 [6],[12],[27]    
Cost 964 [3],[11],[28] 964 [6],[12],[27]    
Fair value $ 585 [7],[11],[28] $ 141 [8],[12],[27] $ 455 456
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Unsecured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% [11],[28] 10.00% [12],[27] 10.00%  
PIK Rate 10.00% [11],[25],[28] 10.00% [12],[26],[27] 10.00%  
Principal $ 305 [3],[11],[28] $ 305 [6],[12],[27]    
Cost 305 [3],[11],[28] 305 [6],[12],[27]    
Fair value $ 0 [7],[11],[28] $ 0 [8],[12],[27] $ 305 305
Investment, Identifier [Axis]: OnAsset Intelligence, Inc. | Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 4,699 [11],[41] 4,699 [12],[42]    
Cost $ 1,089 [3],[11],[41] $ 1,089 [6],[12],[42]    
Fair value $ 0 [7],[11],[41] $ 0 [8],[12],[42] 0 0
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31] 9.42% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 5.75% [13],[16],[32],[34]    
Principal $ 1,348 [3],[14],[15],[31] $ 1,386 [6],[13],[16],[34]    
Cost 1,335 [3],[14],[15],[31] 1,375 [6],[13],[16],[34]    
Fair value $ 1,348 [7],[14],[15],[31] $ 1,386 [8],[13],[16],[34]    
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31] 9.42% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 5.75% [13],[16],[32],[34]    
Principal $ 1,167 [3],[14],[15],[31] $ 3,851 [6],[13],[16],[34]    
Cost 1,156 [3],[14],[15],[31] 3,825 [6],[13],[16],[34]    
Fair value $ 1,167 [7],[14],[15],[31] $ 3,851 [8],[13],[16],[34]    
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.07%      
Spread (as a percent) [14],[15],[29],[31] 6.00%      
Principal [3],[14],[15],[31] $ 3,746      
Cost [3],[14],[15],[31] 3,711      
Fair value [7],[14],[15],[31] $ 3,746      
Investment, Identifier [Axis]: Oneliance, LLC | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,128 [11],[35] 1,128 [12],[36]    
Cost $ 1,128 [3],[11],[35] $ 1,128 [6],[12],[36]    
Fair value $ 3,000 [7],[11],[35] $ 3,270 [8],[12],[36] 3,270 2,580
Investment, Identifier [Axis]: Orttech Holdings, LLC | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 10,000 [9],[48] 10,000 [10],[44]    
Cost $ 10,000 [3],[9],[48] $ 10,000 [6],[10],[44]    
Fair value $ 10,670 [7],[9],[48] $ 13,450 [8],[10],[44] $ 13,450 13,450
Investment, Identifier [Axis]: Orttech Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [10],[34]   14.98%    
Spread (as a percent) 11.00% [9],[29],[30],[31] 11.00% [10],[32],[34] 11.00%  
Principal $ 0 [3],[9],[30],[31] $ 612 [6],[10],[34]    
Cost 0 [3],[9],[30],[31] 612 [6],[10],[34]    
Fair value $ 0 [7],[9],[30],[31] $ 612 [8],[10],[34] $ 0 0
Investment, Identifier [Axis]: Orttech Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.79% [9],[31] 14.98% [10],[34] 15.41%  
Spread (as a percent) 11.00% [9],[29],[31] 11.00% [10],[32],[34] 11.00%  
Principal $ 20,968 [3],[9],[31] $ 20,760 [6],[10],[34]    
Cost 20,763 [3],[9],[31] 20,736 [6],[10],[34]    
Fair value 20,968 [7],[9],[31] 20,760 [8],[10],[34] $ 20,760 21,960
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC | Secured Debt        
Schedule of Investments [Line Items]        
Principal 4,312 [3],[14],[15],[28],[51] 4,348 [6],[13],[16],[27]    
Cost 4,312 [3],[14],[15],[28],[51] 4,348 [6],[13],[16],[27]    
Fair value $ 5 [7],[14],[15],[28],[51] $ 19 [8],[13],[16],[27]    
Investment, Identifier [Axis]: PPL RVs, Inc. | Common Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,000 [9],[35] 2,000 [10],[36]    
Cost $ 2,150 [3],[9],[35] $ 2,150 [6],[10],[36]    
Fair value $ 16,110 [7],[9],[35] $ 17,330 [8],[10],[36] 18,250 17,110
Investment, Identifier [Axis]: PPL RVs, Inc. | Common Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 238,421 [9],[35],[48] 238,421 [10],[36],[44]    
Cost $ 238 [3],[9],[35],[48] $ 238 [6],[10],[36],[44]    
Fair value $ 678 [7],[9],[35],[48] $ 575 [8],[10],[36],[44] $ 575 514
Investment, Identifier [Axis]: PPL RVs, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 8.75% [9],[29],[30],[31] 8.75% [10],[32],[33],[34] 7.00%  
Principal $ 0 [3],[9],[30],[31] $ 0 [6],[10],[33],[34]    
Cost (2) [3],[9],[30],[31] (3) [6],[10],[33],[34]    
Fair value $ 0 [7],[9],[30],[31] $ 0 [8],[10],[33],[34] $ 0 0
Investment, Identifier [Axis]: PPL RVs, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.54% [9],[31] 13.04% [10],[34] 11.48%  
Spread (as a percent) 8.75% [9],[29],[31] 8.75% [10],[32],[34] 7.00%  
Principal $ 15,191 [3],[9],[31] $ 15,191 [6],[10],[34]    
Cost 15,152 [3],[9],[31] 15,125 [6],[10],[34]    
Fair value $ 15,191 [7],[9],[31] $ 15,191 [8],[10],[34] $ 15,191 16,456
Investment, Identifier [Axis]: PavCon LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 5.25%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (26)      
Fair value [7],[14],[15],[30],[31] $ (26)      
Investment, Identifier [Axis]: PavCon LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 5.25%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (26)      
Fair value [7],[14],[15],[30],[31] $ (26)      
Investment, Identifier [Axis]: PavCon LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.59%      
Spread (as a percent) [14],[15],[29],[31] 5.25%      
Principal [3],[14],[15],[31] $ 10,796      
Cost [3],[14],[15],[31] 10,612      
Fair value [7],[14],[15],[31] $ 10,796      
Investment, Identifier [Axis]: Peaches Holding Corporation | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,226 [14] 3,226 [13]    
Cost $ 7,221 [3],[14] $ 7,221 [6],[13]    
Fair value $ 0 [7],[14] $ 0 [8],[13]    
Investment, Identifier [Axis]: Pinnacle TopCo, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 440 [9],[35] 440 [10],[36]    
Cost $ 12,540 [3],[9],[35] $ 12,540 [6],[10],[36]    
Fair value 20,240 [7],[9],[35] 20,440 [8],[10],[36] 19,640 18,360
Investment, Identifier [Axis]: Pinnacle TopCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost (7) [3],[9],[30] (9) [6],[10],[33]    
Fair value $ 0 [7],[9],[30] $ 0 [8],[10],[33] $ 0 0
Investment, Identifier [Axis]: Pinnacle TopCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 24,880 [3],[9] $ 27,200 [6],[10]    
Cost 24,768 [3],[9] 27,037 [6],[10]    
Fair value $ 24,880 [7],[9] $ 27,200 [8],[10] $ 27,840 28,640
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.31% [14],[15],[17],[31] 9.35% [13],[16],[19],[34]    
Spread (as a percent) 5.50% [14],[15],[17],[29],[31] 5.50% [13],[16],[19],[32],[34]    
Principal $ 7,740 [3],[14],[15],[17],[31] $ 7,800 [6],[13],[16],[19],[34]    
Cost 7,615 [3],[14],[15],[17],[31] 7,638 [6],[13],[16],[19],[34]    
Fair value $ 7,740 [7],[14],[15],[17],[31] $ 7,800 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.57% [14],[15],[17],[31] 9.17% [13],[16],[19],[34]    
Spread (as a percent) 5.50% [14],[15],[17],[29],[31] 5.50% [13],[16],[19],[32],[34]    
Principal $ 739 [3],[14],[15],[17],[31] $ 745 [6],[13],[16],[19],[34]    
Cost 726 [3],[14],[15],[17],[31] 728 [6],[13],[16],[19],[34]    
Fair value $ 739 [7],[14],[15],[17],[31] $ 745 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.57% [14],[15],[17],[31] 9.17% [13],[16],[19],[34]    
Spread (as a percent) 5.50% [14],[15],[17],[29],[31] 5.50% [13],[16],[19],[32],[34]    
Principal $ 743 [3],[14],[15],[17],[31] $ 749 [6],[13],[16],[19],[34]    
Cost 733 [3],[14],[15],[17],[31] 736 [6],[13],[16],[19],[34]    
Fair value $ 743 [7],[14],[15],[17],[31] $ 749 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 9.32% [14],[15],[17],[31] 8.92% [13],[16],[19],[34]    
Spread (as a percent) 5.25% [14],[15],[17],[29],[31] 5.25% [13],[16],[19],[32],[34]    
Principal $ 844 [3],[14],[15],[17],[31] $ 851 [6],[13],[16],[19],[34]    
Cost 837 [3],[14],[15],[17],[31] 842 [6],[13],[16],[19],[34]    
Fair value $ 844 [7],[14],[15],[17],[31] $ 851 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 8.98% [14],[15],[17],[31] 9.12% [13],[16],[19],[34]    
Spread (as a percent) 5.25% [14],[15],[17],[29],[31] 5.25% [13],[16],[19],[32],[34]    
Principal $ 1,871 [3],[14],[15],[17],[31] $ 1,886 [6],[13],[16],[19],[34]    
Cost 1,860 [3],[14],[15],[17],[31] 1,871 [6],[13],[16],[19],[34]    
Fair value $ 1,871 [7],[14],[15],[17],[31] $ 1,886 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 6        
Schedule of Investments [Line Items]        
Total Rate 9.07% [14],[15],[17],[31] 9.09% [13],[16],[19],[34]    
Spread (as a percent) 5.25% [14],[15],[17],[29],[31] 5.25% [13],[16],[19],[32],[34]    
Principal $ 2,006 [3],[14],[15],[17],[31] $ 2,021 [6],[13],[16],[19],[34]    
Cost 1,992 [3],[14],[15],[17],[31] 2,004 [6],[13],[16],[19],[34]    
Fair value $ 2,006 [7],[14],[15],[17],[31] $ 2,021 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 7        
Schedule of Investments [Line Items]        
Total Rate 8.51% [14],[15],[17],[31] 8.63% [13],[16],[19],[34]    
Spread (as a percent) 4.75% [14],[15],[17],[29],[31] 4.75% [13],[16],[19],[32],[34]    
Principal $ 2,112 [3],[14],[15],[17],[31] $ 2,128 [6],[13],[16],[19],[34]    
Cost 2,096 [3],[14],[15],[17],[31] 2,108 [6],[13],[16],[19],[34]    
Fair value $ 2,112 [7],[14],[15],[17],[31] $ 2,108 [8],[13],[16],[19],[34]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services | Secured Debt 8        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[17],[31] 8.50%      
Spread (as a percent) [14],[15],[17],[29],[31] 4.75%      
Principal [3],[14],[15],[17],[31] $ 11,515      
Cost [3],[14],[15],[17],[31] 11,424      
Fair value [7],[14],[15],[17],[31] $ 11,515      
Investment, Identifier [Axis]: Principle Environmental, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,037 [9] 1,037 [10]    
Cost $ 1,200 [3],[9] $ 1,200 [6],[10]    
Fair value $ 700 [7],[9] $ 750 [8],[10] 700 600
Investment, Identifier [Axis]: Principle Environmental, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 21,806 [9],[35] 21,806 [10],[36]    
Cost $ 5,709 [3],[9],[35] $ 5,709 [6],[10],[36]    
Fair value $ 14,670 [7],[9],[35] $ 15,740 [8],[10],[36] $ 14,700 12,600
Investment, Identifier [Axis]: Principle Environmental, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 6,397 [3],[9] $ 4,897 [6],[10]    
Cost 6,335 [3],[9] 4,880 [6],[10]    
Fair value 6,397 [7],[9] 4,897 [8],[10] $ 4,875 4,861
Investment, Identifier [Axis]: Principle Environmental, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 4,897    
Investment, Identifier [Axis]: Principle Environmental, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 6,397 $ 0    
Investment, Identifier [Axis]: Pro-Max Restoration & Paint, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 1,202,381      
Cost [3],[14],[15] $ 1,202      
Fair value [7],[14],[15] $ 1,202      
Investment, Identifier [Axis]: Pro-Max Restoration & Paint, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 5.75%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (32)      
Fair value [7],[14],[15],[30],[31] $ (32)      
Investment, Identifier [Axis]: Pro-Max Restoration & Paint, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.53%      
Spread (as a percent) [14],[15],[29],[31] 5.75%      
Principal [3],[14],[15],[31] $ 20,338      
Cost [3],[14],[15],[31] 20,153      
Fair value [7],[14],[15],[31] $ 20,153      
Investment, Identifier [Axis]: Quality Lease Service, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,000 [9] 1,000 [10]    
Cost $ 7,508 [3],[9] $ 7,546 [6],[10]    
Fair value $ 477 [7],[9] $ 460 [8],[10] 460 460
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC | Common Equity        
Schedule of Investments [Line Items]        
Fair value     $ 0 0
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     11.25%  
Spread (as a percent)     6.75%  
PIK Rate     11.25%  
Fair value     $ 1,150 1,257
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     11.25%  
Spread (as a percent)     6.75%  
PIK Rate     11.25%  
Fair value     $ 12,025 13,155
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Spread (as a percent)     6.75%  
Fair value     $ 0 0
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Spread (as a percent)     6.75%  
Fair value     $ 0 0
Investment, Identifier [Axis]: RA Outdoors LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 110 [11],[15] 110 [12],[16]    
Cost $ 0 [3],[11],[15] $ 0 [6],[12],[16]    
Fair value $ 0 [7],[11],[15] $ 0 [8],[12],[16]    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.63% [11],[15],[31] 10.89% [12],[16],[34]    
Spread (as a percent) 6.75% [11],[15],[29],[31] 6.75% [12],[16],[32],[34]    
PIK Rate 1.42% [11],[15],[25],[31] 10.89% [12],[16],[26],[34]    
Principal $ 1,551 [3],[11],[15],[31] $ 1,434 [6],[12],[16],[34]    
Cost 1,551 [3],[11],[15],[31] 1,433 [6],[12],[16],[34]    
Fair value $ 1,195 [7],[11],[15],[31] 1,182 [8],[12],[16],[34]    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 10.63%      
Spread (as a percent) 6.75%      
PIK Rate 1.42%      
Fair value $ 1,195 1,182    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 10.63%      
Spread (as a percent) 6.75%      
PIK Rate 1.42%      
Fair value $ 12,497 12,355    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 10.58%      
Spread (as a percent) 6.75%      
Fair value $ 379 0    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 10.58%      
Spread (as a percent) 6.75%      
Fair value $ 369 $ 0    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [11],[15],[31] 10.58%      
Spread (as a percent) 6.75% [11],[15],[29],[31] 6.75% [12],[16],[32],[33],[34]    
Principal $ 491 [3],[11],[15],[31] $ 0 [6],[12],[16],[33],[34]    
Cost 491 [3],[11],[15],[31] 0 [6],[12],[16],[33],[34]    
Fair value $ 379 [7],[11],[15],[31] $ 0 [8],[12],[16],[33],[34]    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.58% [11],[15],[31] 10.89% [12],[16],[34]    
Spread (as a percent) 6.75% [11],[15],[29],[31] 6.75% [12],[16],[32],[34]    
PIK Rate [12],[16],[26],[34]   10.89%    
Principal $ 480 [3],[11],[15],[31] $ 14,991 [6],[12],[16],[34]    
Cost 480 [3],[11],[15],[31] 14,981 [6],[12],[16],[34]    
Fair value $ 369 [7],[11],[15],[31] $ 12,355 [8],[12],[16],[34]    
Investment, Identifier [Axis]: RA Outdoors LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [11],[15],[31] 10.63%      
Spread (as a percent) 6.75% [11],[15],[29],[31] 6.75% [12],[16],[32],[33],[34]    
PIK Rate [11],[15],[25],[31] 1.42%      
Principal $ 16,223 [3],[11],[15],[31] $ 0 [6],[12],[16],[33],[34]    
Cost 16,218 [3],[11],[15],[31] 0 [6],[12],[16],[33],[34]    
Fair value $ 12,497 [7],[11],[15],[31] $ 0 [8],[12],[16],[33],[34]    
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 11,401 [11] 11,401 [12]    
Cost $ 11,401 [3],[11] $ 11,401 [6],[12]    
Fair value $ 16,651 [7],[11] 12,771 [8],[12] 11,401 0
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [11] 13.00%      
Principal $ 1,000 [3],[11] 0 [6],[12],[33]    
Cost 997 [3],[11] (7) [6],[12],[33]    
Fair value $ 997 [7],[11] (7) [8],[12],[33] (8) 0
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 997 (7)    
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 11,915 7,932    
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Fair value $ 0 33,700    
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 41,410 $ 0    
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 12.50% [12]    
Principal $ 12,000 [3],[11] $ 8,000 [6],[12]    
Cost 11,915 [3],[11] 7,932 [6],[12]    
Fair value $ 11,915 [7],[11] $ 7,932 [8],[12] $ 0 0
Investment, Identifier [Axis]: RFG AcquireCo, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 12.50% [12] 12.50%  
Principal $ 41,500 [3],[11] $ 34,000 [6],[12]    
Cost 41,410 [3],[11] 33,700 [6],[12]    
Fair value $ 41,410 [7],[11] $ 33,700 [8],[12] $ 33,683 0
Investment, Identifier [Axis]: Resodyn, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 1,579,787      
Cost [3],[14],[15] $ 1,580      
Fair value [7],[14],[15] $ 1,580      
Investment, Identifier [Axis]: Resodyn, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [14],[15],[29],[30],[31] 6.25%      
Principal [3],[14],[15],[30],[31] $ 0      
Cost [3],[14],[15],[30],[31] (100)      
Fair value [7],[14],[15],[30],[31] $ (100)      
Investment, Identifier [Axis]: Resodyn, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.32%      
Spread (as a percent) [14],[15],[29],[31] 6.25%      
Principal [3],[14],[15],[31] $ 17,859      
Cost [3],[14],[15],[31] 17,520      
Fair value [7],[14],[15],[31] $ 17,520      
Investment, Identifier [Axis]: Revenue Recovery Holdings, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [11] 104,904      
Cost [3],[11] $ 1,049      
Fair value [7],[11] 2,420      
Investment, Identifier [Axis]: Revenue Recovery Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12]   104,904    
Cost [6],[12]   $ 1,049    
Fair value 2,420 1,049 [8],[12] 1,049 0
Investment, Identifier [Axis]: Revenue Recovery Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[11],[30] 0 [6],[12],[33]    
Cost (15) [3],[11],[30] (18) [6],[12],[33]    
Fair value (15) [7],[11],[30] (18) [8],[12],[33] $ (19) 0
Investment, Identifier [Axis]: Revenue Recovery Holdings, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ (15) (18)    
Investment, Identifier [Axis]: Revenue Recovery Holdings, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 5,405 $ 6,640    
Investment, Identifier [Axis]: Revenue Recovery Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 13.00% [12] 14.00%  
Principal $ 5,450 [3],[11] $ 6,700 [6],[12]    
Cost 5,405 [3],[11] 6,640 [6],[12]    
Fair value $ 5,405 [7],[11] $ 6,640 [8],[12] $ 7,627 0
Investment, Identifier [Axis]: Richardson Sales Solutions | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   8.86%    
Spread (as a percent) 5.00% [14],[15],[29],[30],[31] 5.00% [13],[16],[32],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 1,353 [6],[13],[16],[34]    
Cost (39) [3],[14],[15],[30],[31] 1,299 [6],[13],[16],[34]    
Fair value $ 0 [7],[14],[15],[30],[31] $ 1,353 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Richardson Sales Solutions | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 8.90% [14],[15],[31] 8.86% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 31,806 [3],[14],[15],[31] $ 33,168 [6],[13],[16],[34]    
Cost 31,386 [3],[14],[15],[31] 32,566 [6],[13],[16],[34]    
Fair value $ 31,806 [7],[14],[15],[31] $ 33,168 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Richardson Sales Solutions | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 8.76% [14],[15],[31] 8.93% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 20,664 [3],[14],[15],[31] $ 21,545 [6],[13],[16],[34]    
Cost 20,463 [3],[14],[15],[31] 21,255 [6],[13],[16],[34]    
Fair value $ 20,664 [7],[14],[15],[31] $ 21,545 [8],[13],[16],[34]    
Investment, Identifier [Axis]: River Aggregates, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,500 [9],[35],[48] 1,500 [10],[44]    
Cost $ 369 [3],[9],[35],[48] $ 369 [6],[10],[44]    
Fair value $ 9,830 [7],[9],[35],[48] $ 9,700 [8],[10],[44] 9,590 9,530
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc. | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 11,070 [9] 11,070 [10]    
Cost $ 11,070 [3],[9] $ 11,070 [6],[10]    
Fair value 0 [7],[9] 0 [8],[10] 0 0
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[28],[30] 0 [6],[10],[27],[33]    
Cost (79) [3],[9],[28],[30] (62) [6],[10],[27],[33]    
Fair value $ (79) [7],[9],[28],[30] $ (62) [8],[10],[27],[33] $ (56) (39)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% [9],[28] 12.50% [10],[27] 12.50%  
PIK Rate 10.00% [9],[25],[28] 10.00% [10],[26],[27] 10.00%  
Principal $ 33,660 [3],[9],[28] $ 33,660 [6],[10],[27]    
Cost 31,130 [3],[9],[28] 31,771 [6],[10],[27]    
Fair value $ 13,486 [7],[9],[28] 14,029 [8],[10],[27] $ 14,145 14,562
Investment, Identifier [Axis]: Roof Opco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15] 10.00%      
PIK Rate [14],[15],[25] 10.00%      
Principal $ 319 [3],[14],[15] 0 [6],[13],[16],[33]    
Cost 317 [3],[14],[15] (2) [6],[13],[16],[33]    
Fair value $ 319 [7],[14],[15] $ 0 [8],[13],[16],[33]    
Investment, Identifier [Axis]: Roof Opco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% [14],[15] 10.00% [13],[16]    
PIK Rate 10.00% [14],[15],[25] 10.00% [13],[16],[26]    
Principal $ 3,861 [3],[14],[15] $ 3,376 [6],[13],[16]    
Cost 3,849 [3],[14],[15] 3,360 [6],[13],[16]    
Fair value $ 2,771 [7],[14],[15] $ 2,444 [8],[13],[16]    
Investment, Identifier [Axis]: Roof Opco, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00% [14],[15] 10.00% [13],[16]    
PIK Rate 10.00% [14],[15],[25] 10.00% [13],[16],[26]    
Principal $ 3,899 [3],[14],[15] $ 3,376 [6],[13],[16]    
Cost 3,886 [3],[14],[15] 3,360 [6],[13],[16]    
Fair value $ 2,737 [7],[14],[15] $ 2,375 [8],[13],[16]    
Investment, Identifier [Axis]: Royal Cup Inc. | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 5,992,309 [14],[15] 3,807,144 [13],[16]    
Cost $ 5,992 [3],[14],[15] $ 3,807 [6],[13],[16]    
Fair value $ 5,992 [7],[14],[15] $ 3,807 [8],[13],[16]    
Investment, Identifier [Axis]: Royal Cup Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   5.25%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (221)    
Fair value [8],[13],[16],[33],[34]   $ (221)    
Investment, Identifier [Axis]: Royal Cup Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   5.25%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (83)    
Fair value [8],[13],[16],[33],[34]   $ (83)    
Investment, Identifier [Axis]: Royal Cup Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[16],[32],[33],[34]   5.25%    
Principal [6],[13],[16],[33],[34]   $ 0    
Cost [6],[13],[16],[33],[34]   (359)    
Fair value [8],[13],[16],[33],[34]   $ (359)    
Investment, Identifier [Axis]: Royal Cup Inc. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   8.98%    
Spread (as a percent) [13],[16],[32],[34]   5.25%    
Principal [6],[13],[16],[34]   $ 53,300    
Cost [6],[13],[16],[34]   52,527    
Fair value [8],[13],[16],[34]   $ 52,527    
Investment, Identifier [Axis]: Rug Doctor, LLC. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.57% [14],[15],[31] 9.17% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
Principal $ 1,246 [3],[14],[15],[31] $ 3,721 [6],[13],[16],[34]    
Cost 1,245 [3],[14],[15],[31] 3,720 [6],[13],[16],[34]    
Fair value $ 1,246 [7],[14],[15],[31] $ 3,721 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Rug Doctor, LLC. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.57% [14],[15],[31] 9.17% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
Principal $ 6,519 [3],[14],[15],[31] $ 6,831 [6],[13],[16],[34]    
Cost 6,457 [3],[14],[15],[31] 6,737 [6],[13],[16],[34]    
Fair value $ 6,519 [7],[14],[15],[31] $ 6,831 [8],[13],[16],[34]    
Investment, Identifier [Axis]: SI East, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 165 [11],[35] 165 [12],[36]    
Cost $ 1,525 [3],[11],[35] $ 1,525 [6],[12],[36]    
Fair value $ 13,070 [7],[11],[35] $ 17,190 [8],[12],[36] $ 14,290 13,660
Investment, Identifier [Axis]: SI East, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.85% [11] 11.80% [12] 11.85%  
Principal $ 2,250 [3],[11] $ 2,250 [6],[12]    
Cost 2,243 [3],[11] 2,239 [6],[12]    
Fair value $ 2,243 [7],[11] $ 2,250 [8],[12] $ 2,250 2,250
Investment, Identifier [Axis]: SI East, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.79% [11],[65] 12.85% [12],[66] 12.78%  
Principal $ 66,319 [3],[11],[65] $ 66,850 [6],[12],[66]    
Cost 66,263 [3],[11],[65] 66,769 [6],[12],[66]    
Fair value $ 66,263 [7],[11],[65] $ 66,850 [8],[12],[66] $ 67,035 67,661
Investment, Identifier [Axis]: SPAU Holdings, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 638,710 [14],[15] 638,710 [13],[16]    
Cost $ 639 [3],[14],[15] $ 639 [6],[13],[16]    
Fair value $ 630 [7],[14],[15] $ 630 [8],[13],[16]    
Investment, Identifier [Axis]: SPAU Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31],[43] 11.09%      
Spread (as a percent) 7.00% [14],[15],[29],[31],[43] 7.00% [13],[16],[32],[33],[34]    
Principal $ 2,683 [3],[14],[15],[31],[43] $ 0 [6],[13],[16],[33],[34]    
Cost 2,652 [3],[14],[15],[31],[43] (24) [6],[13],[16],[33],[34]    
Fair value $ 2,683 [7],[14],[15],[31],[43] $ 0 [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: SPAU Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.22% [14],[15],[31] 10.82% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 7.00% [13],[16],[32],[34]    
Principal $ 15,289 [3],[14],[15],[31] $ 15,409 [6],[13],[16],[34]    
Cost 15,140 [3],[14],[15],[31] 15,291 [6],[13],[16],[34]    
Fair value $ 15,289 [7],[14],[15],[31] 15,409 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [9],[35] 12,000      
Cost [3],[9],[35] $ 12,000      
Fair value $ 12,000 [7],[9],[35] 0    
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [9] 13.00%      
Principal [3],[9] $ 750      
Cost [3],[9] 736      
Fair value [7],[9] $ 736      
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 17,641 0    
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 10,109 0    
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 736 $ 0    
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [9] 13.00%      
Principal [3],[9] $ 17,800      
Cost [3],[9] 17,641      
Fair value [7],[9] $ 17,641      
Investment, Identifier [Axis]: Shift Transit ParentCo, LP | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [9] 13.00%      
Principal [3],[9] $ 10,200      
Cost [3],[9] 10,109      
Fair value [7],[9] $ 10,109      
Investment, Identifier [Axis]: Slick Innovations, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 70,000 [11] 70,000 [12],[36]    
Cost $ 0 [3],[11] $ 0 [6],[12],[36]    
Fair value $ 3,440 [7],[11] $ 2,160 [8],[12],[36] 1,990 2,440
Investment, Identifier [Axis]: Slick Innovations, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% [11] 14.00% [12]    
Principal $ 20,520 [3],[11] $ 24,680 [6],[12]    
Cost 20,358 [3],[11] 24,451 [6],[12]    
Fair value $ 20,520 [7],[11] $ 24,680 [8],[12]    
Investment, Identifier [Axis]: Slick Innovations, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Fair value     $ 0 16,320
Investment, Identifier [Axis]: Slick Innovations, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     14.00%  
Fair value     $ 25,080 0
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 864 [14],[15],[35] 864 [13],[16]    
Cost $ 864 [3],[14],[15],[35] $ 864 [6],[13],[16]    
Fair value $ 1,303 [7],[14],[15],[35] $ 1,013 [8],[13],[16]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.00% [14],[15],[29],[30],[31] 5.25% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 0 [3],[14],[15],[30],[31] 0 [6],[13],[16],[33],[34]    
Fair value $ 0 [7],[14],[15],[30],[31] $ 0 [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% [14],[15],[31] 9.07% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.25% [13],[16],[32],[34]    
Principal $ 51,553 [3],[14],[15],[31] $ 53,320 [6],[13],[16],[34]    
Cost 51,323 [3],[14],[15],[31] 53,022 [6],[13],[16],[34]    
Fair value $ 51,553 [7],[14],[15],[31] $ 53,320 [8],[13],[16],[34]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.00% [14],[15],[31] 9.07% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.25% [13],[16],[32],[34]    
Principal $ 10,396 [3],[14],[15],[31] $ 10,475 [6],[13],[16],[34]    
Cost 10,324 [3],[14],[15],[31] 10,383 [6],[13],[16],[34]    
Fair value $ 10,396 [7],[14],[15],[31] $ 10,475 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Specialized Aviation Holdings, LLC | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 25,000 [11],[35] 25,000 [12]    
Cost $ 15,000 [3],[11],[35] $ 15,000 [6],[12]    
Fair value 15,000 [7],[11],[35] $ 15,000 [8],[12] $ 15,000 0
Investment, Identifier [Axis]: Specialized Aviation Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   13.00% [12] 13.00%  
Principal [6],[12]   $ 28,625    
Cost [6],[12]   28,362    
Fair value $ 0 28,362 [8],[12] $ 29,710 0
Investment, Identifier [Axis]: Spring Engineering Holdings, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [9],[35] 4,650      
Cost [3],[9],[35] $ 4,650      
Fair value $ 4,650 [7],[9],[35] 0    
Investment, Identifier [Axis]: Spring Engineering Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [9] 13.00%      
Principal [3],[9] $ 23,391      
Cost [3],[9] 23,187      
Fair value $ 23,187 [7],[9] $ 0    
Investment, Identifier [Axis]: Student Resource Center, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 5,907,649 [11],[15] 5,907,649 [12],[16]    
Cost $ 0 [3],[11],[15] $ 0 [6],[12],[16]    
Fair value $ 0 [7],[11],[15] $ 0 [8],[12],[16] $ 0 0
Investment, Identifier [Axis]: Student Resource Center, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 8.50% [11],[15] 8.50% [12],[16] 8.50%  
PIK Rate 8.50% [11],[15],[25] 8.50% [12],[16],[26] 8.50%  
Principal $ 233 [3],[11],[15] $ 222 [6],[12],[16]    
Cost 233 [3],[11],[15] 222 [6],[12],[16]    
Fair value $ 863 [7],[11],[15] 780 [8],[12],[16] $ 1,346 1,644
Investment, Identifier [Axis]: Student Resource Center, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 8.50%      
PIK Rate 8.50%      
Fair value $ 1,227 1,438    
Investment, Identifier [Axis]: Student Resource Center, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 8.50%      
PIK Rate 8.50%      
Fair value $ 863 $ 780    
Investment, Identifier [Axis]: Student Resource Center, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 8.50% [11],[15],[28] 8.50% [12],[16],[27] 8.50%  
PIK Rate 8.50% [11],[15],[25],[28] 8.50% [12],[16],[26],[27] 8.50%  
Principal $ 5,327 [3],[11],[15],[28] $ 5,327 [6],[12],[16],[27]    
Cost 4,884 [3],[11],[15],[28] 4,884 [6],[12],[16],[27]    
Fair value $ 1,227 [7],[11],[15],[28] $ 1,438 [8],[12],[16],[27] $ 774 204
Investment, Identifier [Axis]: Superior Rigging & Erecting Co. | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,636 [11],[35] 1,636 [12]    
Cost $ 4,500 [3],[11],[35] $ 4,500 [6],[12]    
Fair value $ 20,460 [7],[11],[35] $ 17,500 [8],[12] 16,720 10,530
Investment, Identifier [Axis]: TEC Services, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.50% [14],[15],[29],[30],[31] 5.50% [13],[16],[32],[33],[34]    
Principal $ 0 [3],[14],[15],[30],[31] $ 0 [6],[13],[16],[33],[34]    
Cost (62) [3],[14],[15],[30],[31] (76) [6],[13],[16],[33],[34]    
Fair value $ (62) [7],[14],[15],[30],[31] $ (76) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: TEC Services, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.67%      
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[33],[34]    
Principal $ 31,767 [3],[14],[15],[31] $ 0 [6],[13],[16],[33],[34]    
Cost 31,463 [3],[14],[15],[31] (57) [6],[13],[16],[33],[34]    
Fair value $ 31,767 [7],[14],[15],[31] $ (57) [8],[13],[16],[33],[34]    
Investment, Identifier [Axis]: TEC Services, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.27%    
Spread (as a percent) [13],[16],[32],[34]   5.50%    
Principal [6],[13],[16],[34]   $ 32,010    
Cost [6],[13],[16],[34]   31,633    
Fair value [8],[13],[16],[34]   $ 31,903    
Investment, Identifier [Axis]: Tectonic Financial, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [13],[36]   200,000    
Cost [6],[13],[36]   $ 2,000    
Fair value [8],[13],[36]   $ 5,000    
Investment, Identifier [Axis]: Tedder Industries, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 6,605 [9] 6,605 [10]    
Cost $ 661 [3],[9] $ 661 [6],[10]    
Fair value $ 0 [7],[9] $ 0 [8],[10] 0 0
Investment, Identifier [Axis]: Tedder Industries, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 5,643 [9] 5,643 [10]    
Cost $ 564 [3],[9] $ 564 [6],[10]    
Fair value $ 0 [7],[9] $ 0 [8],[10] 0 0
Investment, Identifier [Axis]: Tedder Industries, LLC | Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) 544 [9] 544 [10]    
Cost $ 9,245 [3],[9] $ 9,245 [6],[10]    
Fair value $ 0 [7],[9] $ 0 [8],[10] $ 0 0
Investment, Identifier [Axis]: Tedder Industries, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9],[45] 12.00% [10],[27],[37] 12.00%  
PIK Rate 12.00% [9],[25],[45] 12.00% [10],[26],[27],[37] 12.00%  
Principal $ 1,398 [3],[9],[45] $ 1,203 [6],[10],[27],[37]    
Cost 1,379 [3],[9],[45] 861 [6],[10],[27],[37]    
Fair value $ 1,398 [7],[9],[45] $ 962 [8],[10],[27],[37] $ 910 1,646
Investment, Identifier [Axis]: Tedder Industries, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9],[28],[45] 12.00% [10],[27],[37] 12.00%  
PIK Rate 12.00% [9],[25],[28],[45] 12.00% [10],[26],[27],[37] 12.00%  
Principal $ 15,200 [3],[9],[28],[45] $ 15,200 [6],[10],[27],[37]    
Cost 15,044 [3],[9],[28],[45] 15,045 [6],[10],[27],[37]    
Fair value $ 6,282 [7],[9],[28],[45] $ 2,827 [8],[10],[27],[37] $ 2,564 3,603
Investment, Identifier [Axis]: Televerde, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 460 [9] 460 [10],[36]    
Cost $ 1,290 [3],[9] $ 1,290 [6],[10],[36]    
Fair value $ 0 [7],[9] 4,822 [8],[10],[36] 4,822 4,252
Investment, Identifier [Axis]: Televerde, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [9] 248      
Cost [3],[9] $ 718      
Fair value [7],[9] 1,491      
Investment, Identifier [Axis]: Televerde, LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value 1,491 1,794    
Investment, Identifier [Axis]: Televerde, LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Fair value $ 681 $ 0    
Investment, Identifier [Axis]: Televerde, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [9] 273      
Cost [3],[9] $ 273      
Fair value [7],[9] $ 681      
Investment, Identifier [Axis]: Televerde, LLC | Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) [10]   248    
Cost [6],[10]   $ 718    
Fair value   $ 1,794 [8],[10] 1,794 1,794
Investment, Identifier [Axis]: Tex Tech Tennis, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,000,000 [14],[15],[35],[48] 1,000,000 [13],[16],[44]    
Cost $ 1,000 [3],[14],[15],[35],[48] $ 1,000 [6],[13],[16],[44]    
Fair value $ 3,390 [7],[14],[15],[35],[48] $ 2,900 [8],[13],[16],[44]    
Investment, Identifier [Axis]: The Affiliati Network, LLC | Preferred Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 312,910 [11] 312,910 [12]    
Cost $ 313 [3],[11] $ 313 [6],[12]    
Fair value 313 [7],[11] 313 [8],[12] 6,400 6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC | Preferred Stock 1.1        
Schedule of Investments [Line Items]        
Fair value 6,400 6,400    
Investment, Identifier [Axis]: The Affiliati Network, LLC | Preferred Stock 1.2        
Schedule of Investments [Line Items]        
Fair value $ 313 $ 313    
Investment, Identifier [Axis]: The Affiliati Network, LLC | Preferred Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 1,280,000 [11],[35] 1,280,000 [12],[36]    
Cost $ 6,400 [3],[11],[35] $ 6,400 [6],[12],[36]    
Fair value $ 6,400 [7],[11],[35] $ 6,400 [8],[12],[36] $ 313 287
Investment, Identifier [Axis]: The Affiliati Network, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     10.00%  
Fair value     $ 557 394
Investment, Identifier [Axis]: The Affiliati Network, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate     10.00%  
Fair value     $ 4,652 5,053
Investment, Identifier [Axis]: Titan Meter Midco Corp. | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,358,892 [14],[15] 1,358,892 [13],[16]    
Total Rate 8.00% [14],[15] 8.00% [13],[16]    
PIK Rate 8.00% [14],[15],[25] 8.00% [13],[16],[26]    
Cost $ 1,375 [3],[14],[15] $ 1,375 [6],[13],[16]    
Fair value $ 1,550 [7],[14],[15] $ 1,540 [8],[13],[16]    
Investment, Identifier [Axis]: Titan Meter Midco Corp. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.57% [14],[15],[31],[43] 10.17% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31],[43] 6.50% [13],[16],[32],[34]    
Principal $ 2,843 [3],[14],[15],[31],[43] $ 1,439 [6],[13],[16],[34]    
Cost 2,782 [3],[14],[15],[31],[43] 1,360 [6],[13],[16],[34]    
Fair value $ 2,843 [7],[14],[15],[31],[43] $ 1,439 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Titan Meter Midco Corp. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.57% [14],[15],[31] 10.17% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 33,328 [3],[14],[15],[31] $ 33,585 [6],[13],[16],[34]    
Cost 32,757 [3],[14],[15],[31] 32,840 [6],[13],[16],[34]    
Fair value $ 33,328 [7],[14],[15],[31] $ 33,585 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Titan Meter Midco Corp. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.57% [14],[15],[31] 10.17% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 4,265 [3],[14],[15],[31] $ 4,298 [6],[13],[16],[34]    
Cost 4,201 [3],[14],[15],[31] 4,214 [6],[13],[16],[34]    
Fair value $ 4,265 [7],[14],[15],[31] $ 4,298 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Titan Meter Midco Corp. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.57% [14],[15],[31] 10.17% [13],[16],[34]    
Spread (as a percent) 6.50% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 4,826 [3],[14],[15],[31] $ 4,863 [6],[13],[16],[34]    
Cost 4,745 [3],[14],[15],[31] 4,755 [6],[13],[16],[34]    
Fair value $ 4,826 [7],[14],[15],[31] $ 4,863 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 723 [9],[48] 723 [10],[44]    
Cost $ 696 [3],[9],[48] $ 696 [6],[10],[44]    
Fair value $ 696 [7],[9],[48] $ 696 [8],[10],[44]    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 654 [9],[35] 615 [10],[36]    
Cost $ 6,021 [3],[9],[35] $ 4,655 [6],[10],[36]    
Fair value $ 28,700 [7],[9],[35] 14,920 [8],[10],[36] 13,350 8,570
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [9] 11.50%      
Principal $ 1,600 [3],[9] 0 [6],[10],[33]    
Cost 1,600 [3],[9] 0 [6],[10],[33]    
Fair value $ 1,600 [7],[9] 0 [8],[10],[33] $ (1) (1)
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 11.50%      
Fair value $ 1,600 0    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Fair value $ 0 9,000    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Total Rate 13.50%      
Fair value $ 31,280 0    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Total Rate 9.00%      
Fair value $ 2,040 2,040    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Total Rate 9.00%      
Fair value $ 2,100 0    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 1.6        
Schedule of Investments [Line Items]        
Total Rate 9.00%      
Fair value $ 400 $ 0    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% [9] 13.50% [10] 13.50%  
Principal $ 31,280 [3],[9] $ 9,000 [6],[10]    
Cost 31,082 [3],[9] 8,959 [6],[10]    
Fair value $ 31,280 [7],[9] $ 9,000 [8],[10] $ 7,875 7,855
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.00% [9] 9.00% [10]    
Principal $ 2,040 [3],[9] $ 2,040 [6],[10]    
Cost 2,037 [3],[9] 2,034 [6],[10]    
Fair value $ 2,040 [7],[9] $ 2,040 [8],[10]    
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [9] 9.00%      
Principal [3],[9] $ 2,100      
Cost [3],[9] 2,094      
Fair value [7],[9] $ 2,100      
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [9] 9.00%      
Principal [3],[9] $ 400      
Cost [3],[9] 399      
Fair value [7],[9] $ 400      
Investment, Identifier [Axis]: Trinity Medical Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 22,500 [9],[35] 22,500 [10]    
Cost $ 22,500 [3],[9],[35] $ 22,500 [6],[10]    
Fair value $ 39,150 [7],[9],[35] 22,500 [8],[10]    
Investment, Identifier [Axis]: Trinity Medical Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 58,500 57,944    
Investment, Identifier [Axis]: Trinity Medical Holdings, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[9],[30] 0 [6],[10],[33]    
Cost 0 [3],[9],[30] 0 [6],[10],[33]    
Fair value $ 0 [7],[9],[30] $ 0 [8],[10],[33]    
Investment, Identifier [Axis]: Trinity Medical Holdings, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10]    
Principal $ 58,500 [3],[9] $ 58,500 [6],[10]    
Cost 58,032 [3],[9] 57,944 [6],[10]    
Fair value $ 58,500 [7],[9] $ 57,944 [8],[10]    
Investment, Identifier [Axis]: U.S. TelePacific Corp. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 14.88% [14],[21],[31],[60] 12.32% [13],[22],[27],[34]    
Spread (as a percent) 11.15% [14],[21],[29],[31],[60] 8.15% [13],[22],[27],[32],[34]    
PIK Rate 10.00% [14],[21],[25],[31],[60] 7.00% [13],[22],[26],[27],[34]    
Principal $ 1,194 [3],[14],[21],[31],[60] $ 9,811 [6],[13],[22],[27],[34]    
Cost 1,177 [3],[14],[21],[31],[60] 2,611 [6],[13],[22],[27],[34]    
Fair value $ 1,177 [7],[14],[21],[31],[60] 3,998 [8],[13],[22],[27],[34]    
Investment, Identifier [Axis]: U.S. TelePacific Corp. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[21],[31] 11.88%      
Spread (as a percent) [14],[21],[29],[31] 8.15%      
PIK Rate [14],[21],[25],[31] 7.00%      
Principal $ 718 [3],[14],[21],[31] 1,003 [6],[13],[22],[27]    
Cost 718 [3],[14],[21],[31] 20 [6],[13],[22],[27]    
Fair value $ 718 [7],[14],[21],[31] $ 0 [8],[13],[22],[27]    
Investment, Identifier [Axis]: U.S. TelePacific Corp. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[21],[31] 15.22%      
Spread (as a percent) [14],[21],[29],[31] 11.15%      
PIK Rate [14],[21],[25],[31] 10.00%      
Principal [3],[14],[21],[31] $ 1,173      
Cost [3],[14],[21],[31] 1,173      
Fair value [7],[14],[21],[31] $ 1,173      
Investment, Identifier [Axis]: U.S. TelePacific Corp. | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [14],[21] 1.00%      
Principal [3],[14],[21] $ 418      
Cost [3],[14],[21] 381      
Fair value [7],[14],[21] 381      
Investment, Identifier [Axis]: U.S. TelePacific Corp. | Secured Debt 5        
Schedule of Investments [Line Items]        
Principal [3],[14],[21],[28] 8,306      
Cost [3],[14],[21],[28] 1,106      
Fair value [7],[14],[21],[28] 810      
Investment, Identifier [Axis]: U.S. TelePacific Corp. | Secured Debt 6        
Schedule of Investments [Line Items]        
Principal [3],[14],[21],[28] 1,003      
Cost [3],[14],[21],[28] 20      
Fair value [7],[14],[21],[28] $ 0      
Investment, Identifier [Axis]: UBM AcquireCo LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 80 [14],[35] 80 [13]    
Cost $ 8,000 [3],[14],[35] $ 8,000 [6],[13]    
Fair value 7,180 [7],[14],[35] 8,000 [8],[13]    
Investment, Identifier [Axis]: UBM AcquireCo LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [3],[14],[30] 0 [6],[13],[33]    
Cost (24) [3],[14],[30] (38) [6],[13],[33]    
Fair value $ (24) [7],[14],[30] $ (38) [8],[13],[33]    
Investment, Identifier [Axis]: UBM AcquireCo LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [14] 10.00% [13]    
Principal $ 15,600 [3],[14] $ 42,800 [6],[13]    
Cost 15,474 [3],[14] 42,379 [6],[13]    
Fair value $ 15,474 [7],[14] $ 42,379 [8],[13]    
Investment, Identifier [Axis]: UBM AcquireCo LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14] 11.00%      
Principal [3],[14] $ 42,800      
Cost [3],[14] 42,442      
Fair value [7],[14] $ 42,442      
Investment, Identifier [Axis]: UPS Intermediate, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,521 [14],[15] 1,443,299 [13],[16]    
Cost $ 1,521 [3],[14],[15] $ 1,443 [6],[13],[16]    
Fair value $ 1,490 [7],[14],[15] $ 1,480 [8],[13],[16]    
Investment, Identifier [Axis]: UPS Intermediate, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   9.97%    
Spread (as a percent) [13],[16],[32],[34]   6.25%    
Principal [6],[13],[16],[34]   $ 42,903    
Cost [6],[13],[16],[34]   42,297    
Fair value [8],[13],[16],[34]   $ 42,622    
Investment, Identifier [Axis]: UPS Intermediate, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.39%      
Spread (as a percent) [14],[15],[29],[31] 6.50%      
Principal [3],[14],[15],[31] $ 13,069      
Cost [3],[14],[15],[31] 12,848      
Fair value [7],[14],[15],[31] $ 13,069      
Investment, Identifier [Axis]: UPS Intermediate, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.34%      
Spread (as a percent) [14],[15],[29],[31] 6.50%      
Principal [3],[14],[15],[31] $ 3,523      
Cost [3],[14],[15],[31] 3,457      
Fair value [7],[14],[15],[31] $ 3,523      
Investment, Identifier [Axis]: UPS Intermediate, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.57%      
Spread (as a percent) [14],[15],[29],[31] 6.50%      
Principal [3],[14],[15],[31] $ 42,577      
Cost [3],[14],[15],[31] 42,101      
Fair value [7],[14],[15],[31] $ 42,577      
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 2,370,059 [11],[21] 2,370,059 [12],[22]    
Cost $ 0 [3],[11],[21] $ 0 [6],[12],[22]    
Fair value $ 0 [7],[11],[21] $ 0 [8],[12],[22] 0 0
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 15,863,397 [11],[21] 11,450,416 [12],[22]    
Total Rate 20.00% [11],[21] 20.00% [12],[22]    
PIK Rate 20.00% [11],[21],[25] 20.00% [12],[22],[26]    
Cost $ 8,416 [3],[11],[21] $ 8,416 [6],[12],[22]    
Fair value $ 11,208 [7],[11],[21] 9,388 [8],[12],[22] $ 0 3,181
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 1.1        
Schedule of Investments [Line Items]        
Total Rate 20.00%      
PIK Rate 20.00%      
Fair value $ 11,208 9,388    
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 1.2        
Schedule of Investments [Line Items]        
Total Rate 19.00%      
PIK Rate 19.00%      
Fair value $ 0 0    
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 1.3        
Schedule of Investments [Line Items]        
Total Rate 13.50%      
PIK Rate 13.50%      
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 21,382,147 [11],[21] 21,382,147 [12],[22]    
Total Rate 19.00% [11],[21] 19.00% [12],[22] 20.00%  
PIK Rate 19.00% [11],[21],[25] 19.00% [12],[22],[26] 20.00%  
Cost $ 3,667 [3],[11],[21] $ 3,667 [6],[12],[22]    
Fair value $ 0 [7],[11],[21] $ 0 [8],[12],[22] $ 9,388 4,272
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 3        
Schedule of Investments [Line Items]        
Units (in shares) 42,338,440 [11],[21] 42,338,440 [12],[22]    
Total Rate 13.50% [11],[21] 13.50% [12],[22] 19.00%  
PIK Rate 13.50% [11],[21],[25] 13.50% [12],[22],[26] 19.00%  
Cost $ 7,924 [3],[11],[21] $ 7,924 [6],[12],[22]    
Fair value $ 0 [7],[11],[21] $ 0 [8],[12],[22] $ 0 0
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Preferred Stock 4        
Schedule of Investments [Line Items]        
Total Rate     13.50%  
PIK Rate     13.50%  
Fair value     $ 0 0
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Secured Convertible Debt 1        
Schedule of Investments [Line Items]        
Fair value     0 5,642
Investment, Identifier [Axis]: UniTek Global Services, Inc. | Secured Convertible Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 2,663
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP | LP Interests        
Schedule of Investments [Line Items]        
Units (as a percent) 11.11% [11],[17],[18],[49] 11.11% [12],[19],[20],[50]    
Cost $ 2,864 [3],[11],[17],[18],[49] $ 2,612 [6],[12],[19],[20],[50]    
Fair value $ 4,915 [7],[11],[17],[18],[49] $ 4,164 [8],[12],[19],[20],[50] 4,128 4,732
Investment, Identifier [Axis]: UnionRock Energy Fund III, LP | LP Interests        
Schedule of Investments [Line Items]        
Units (as a percent) 14.91% [11],[17],[18],[35],[49] 14.91% [12],[19],[20],[36],[50]    
Cost $ 6,444 [3],[11],[17],[18],[35],[49] $ 4,592 [6],[12],[19],[20],[36],[50]    
Fair value $ 7,648 [7],[11],[17],[18],[35],[49] $ 5,165 [8],[12],[19],[20],[36],[50] $ 5,162 5,612
Investment, Identifier [Axis]: Urgent DSO LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 4,000 [11] 4,000 [12],[36]    
Total Rate     9.00%  
PIK Rate     9.00%  
Cost $ 4,614 [3],[11] $ 4,614 [6],[12],[36]    
Fair value $ 772 [7],[11] $ 4,356 [8],[12],[36] $ 4,614 4,320
Investment, Identifier [Axis]: Urgent DSO LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.50% [11] 13.50% [12] 13.50%  
Principal $ 8,800 [3],[11] $ 8,800 [6],[12]    
Cost 8,757 [3],[11] 8,743 [6],[12]    
Fair value $ 8,495 [7],[11] $ 8,672 [8],[12] $ 8,740 8,727
Investment, Identifier [Axis]: UserZoom Technologies, Inc. | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   11.63%    
Spread (as a percent) [13],[16],[32],[34]   7.50%    
Principal [6],[13],[16],[34]   $ 4,000    
Cost [6],[13],[16],[34]   3,938    
Fair value [8],[13],[16],[34]   $ 4,000    
Investment, Identifier [Axis]: UserZoom Technologies, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 11.59%      
Spread (as a percent) [14],[15],[29],[31] 7.75%      
PIK Rate [14],[15],[25],[31] 1.75%      
Principal [3],[14],[15],[31] $ 326      
Cost [3],[14],[15],[31] 321      
Fair value [7],[14],[15],[31] $ 279      
Investment, Identifier [Axis]: UserZoom Technologies, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 11.56%      
Spread (as a percent) [14],[15],[29],[31] 7.75%      
PIK Rate [14],[15],[25],[31] 1.75%      
Principal [3],[14],[15],[31] $ 4,052      
Cost [3],[14],[15],[31] 3,996      
Fair value [7],[14],[15],[31] $ 3,463      
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,038,462 [14],[15],[35] 1,038,462 [13],[16],[36]    
Cost $ 1,038 [3],[14],[15],[35] $ 1,038 [6],[13],[16],[36]    
Fair value $ 4,030 [7],[14],[15],[35] $ 3,610 [8],[13],[16],[36]    
Investment, Identifier [Axis]: VVS Holdco LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 12,240 [9],[48] 12,240 [10],[36],[44]    
Cost $ 12,240 [3],[9],[48] $ 12,240 [6],[10],[36],[44]    
Fair value $ 12,240 [7],[9],[48] $ 12,240 [8],[10],[36],[44] $ 12,240 12,240
Investment, Identifier [Axis]: VVS Holdco LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [9],[31] 9.79%      
Spread (as a percent) 6.00% [9],[29],[31] 6.00% [10],[32],[33],[34] 6.00%  
Principal $ 400 [3],[9],[31] $ 0 [6],[10],[33],[34]    
Cost 400 [3],[9],[31] 0 [6],[10],[33],[34]    
Fair value $ 400 [7],[9],[31] 0 [8],[10],[33],[34] $ 0 0
Investment, Identifier [Axis]: VVS Holdco LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Total Rate 9.79%      
Spread (as a percent) 6.00%      
Fair value $ 400 0    
Investment, Identifier [Axis]: VVS Holdco LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 11.50%      
Fair value $ 22,792 $ 23,956    
Investment, Identifier [Axis]: VVS Holdco LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.50% [9] 11.50% [10] 11.50%  
Principal $ 22,800 [3],[9] $ 24,000 [6],[10]    
Cost 22,792 [3],[9] 23,956 [6],[10]    
Fair value $ 22,792 [7],[9] $ 23,956 [8],[10] $ 24,423 25,661
Investment, Identifier [Axis]: Victory Energy Operations, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 51,421 [9] 51,421 [10]    
Cost $ 22,471 [3],[9] $ 22,471 [6],[10]    
Fair value 26,320 [7],[9] $ 23,380 [8],[10] 22,870 22,686
Investment, Identifier [Axis]: Victory Energy Operations, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [10]   13.00%    
Principal 0 [3],[9],[30] $ 862 [6],[10]    
Cost (21) [3],[9],[30] 836 [6],[10]    
Fair value (21) [7],[9],[30] 836 [8],[10] $ (28) (33)
Investment, Identifier [Axis]: Victory Energy Operations, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ (21) 836    
Investment, Identifier [Axis]: Victory Energy Operations, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Fair value $ 46,248 $ 47,889    
Investment, Identifier [Axis]: Victory Energy Operations, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [9] 13.00% [10] 13.00%  
Principal $ 46,527 [3],[9] $ 48,251 [6],[10]    
Cost 46,248 [3],[9] 47,889 [6],[10]    
Fair value 46,248 [7],[9] $ 47,889 [8],[10] $ 47,865 47,792
Investment, Identifier [Axis]: Vitesse Systems | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[38]   10.98%    
Spread (as a percent) [13],[16],[32],[38]   7.00%    
Principal [6],[13],[16],[38]   $ 7,727    
Cost [6],[13],[16],[38]   7,599    
Fair value [8],[13],[16],[38]   $ 7,727    
Investment, Identifier [Axis]: Vitesse Systems | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[34]   10.93%    
Spread (as a percent) [13],[16],[32],[34]   7.00%    
Principal [6],[13],[16],[34]   $ 41,650    
Cost [6],[13],[16],[34]   41,032    
Fair value [8],[13],[16],[34]   $ 41,650    
Investment, Identifier [Axis]: Volusion, LLC | Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [10]   1,802,780    
Cost [6],[10]   $ 2,576    
Fair value 0 $ 0 [8],[10] 0 0
Investment, Identifier [Axis]: Volusion, LLC | Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [10]   5,097,595    
Cost [6],[10]   $ 1,830    
Fair value   2,910 [8],[10] 0 0
Investment, Identifier [Axis]: Volusion, LLC | Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value 0 0    
Investment, Identifier [Axis]: Volusion, LLC | Preferred Member Units 1.2        
Schedule of Investments [Line Items]        
Fair value 0 $ 2,910    
Investment, Identifier [Axis]: Volusion, LLC | Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [10]   142,512    
Cost [6],[10]   $ 0    
Fair value   $ 0 [8],[10] 3,669 7,003
Investment, Identifier [Axis]: Volusion, LLC | Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) [10]   4,876,670    
Cost [6],[10]   $ 14,000    
Fair value   $ 0 [8],[10] $ 0 0
Investment, Identifier [Axis]: Volusion, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   10.00% [10],[37] 10.00%  
Principal [6],[10],[37]   $ 2,100    
Cost [6],[10],[37]   2,100    
Fair value $ 0 $ 2,100 [8],[10],[37] $ 2,100 2,100
Investment, Identifier [Axis]: WECS Group, LLC | Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [14],[15] 1,125      
Cost [3],[14],[15] $ 1,125      
Fair value [7],[14],[15] $ 1,125      
Investment, Identifier [Axis]: WECS Group, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31],[43] 9.53%      
Spread (as a percent) [14],[15],[29],[31],[43] 5.75%      
Principal [3],[14],[15],[31],[43] $ 10,125      
Cost [3],[14],[15],[31],[43] 9,801      
Fair value [7],[14],[15],[31],[43] $ 9,801      
Investment, Identifier [Axis]: WECS Group, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.59%      
Spread (as a percent) [14],[15],[29],[31] 5.75%      
Principal [3],[14],[15],[31] $ 7,500      
Cost [3],[14],[15],[31] 7,246      
Fair value [7],[14],[15],[31] $ 7,246      
Investment, Identifier [Axis]: WECS Group, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 9.48%      
Spread (as a percent) [14],[15],[29],[31] 5.75%      
Principal [3],[14],[15],[31] $ 30,000      
Cost [3],[14],[15],[31] 29,425      
Fair value [7],[14],[15],[31] $ 29,425      
Investment, Identifier [Axis]: Wash & Wax Systems LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,219 [14],[15] 3,219 [13],[16]    
Cost $ 3,410 [3],[14],[15] $ 3,410 [6],[13],[16]    
Fair value $ 110 [7],[14],[15] $ 1,520 [8],[13],[16]    
Investment, Identifier [Axis]: Wash & Wax Systems LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.37% [14],[15],[31],[43] 9.28% [13],[16],[34],[38]    
Spread (as a percent) 5.50% [14],[15],[29],[31],[43] 5.50% [13],[16],[32],[34],[38]    
Principal $ 402 [3],[14],[15],[31],[43] $ 322 [6],[13],[16],[34],[38]    
Cost 402 [3],[14],[15],[31],[43] 322 [6],[13],[16],[34],[38]    
Fair value $ 396 [7],[14],[15],[31],[43] $ 322 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: Wash & Wax Systems LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.34% [14],[15],[31] 9.34% [13],[16],[34]    
Spread (as a percent) 5.50% [14],[15],[29],[31] 5.50% [13],[16],[32],[34]    
PIK Rate [14],[15],[25],[31] 9.34%      
Principal $ 8,148 [3],[14],[15],[31] $ 7,546 [6],[13],[16],[34]    
Cost 8,148 [3],[14],[15],[31] 7,546 [6],[13],[16],[34]    
Fair value $ 8,015 [7],[14],[15],[31] $ 7,546 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Wash & Wax Systems LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% [14],[15] 12.00% [13],[16]    
PIK Rate 12.00% [14],[15],[25] 12.00% [13],[16],[26]    
Principal $ 5,726 [3],[14],[15] $ 5,353 [6],[13],[16]    
Cost 5,726 [3],[14],[15] 5,353 [6],[13],[16]    
Fair value $ 5,482 [7],[14],[15] 5,353 [8],[13],[16]    
Investment, Identifier [Axis]: Watterson Brands, LLC | Common Shares        
Schedule of Investments [Line Items]        
Units (in shares) [11],[15] 8,447      
Cost [3],[11],[15] $ 0      
Fair value $ 0 [7],[11],[15] 0    
Investment, Identifier [Axis]: Watterson Brands, LLC | Preferred Shares        
Schedule of Investments [Line Items]        
Units (in shares) [11],[15] 8,447      
Total Rate [11],[15] 12.00%      
PIK Rate [11],[15],[25] 12.00%      
Cost [3],[11],[15] $ 4,840      
Fair value 4,550 [7],[11],[15] $ 0    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[27]   12.00%    
PIK Rate [13],[16],[26],[27]   4.00%    
Principal 0 [3],[11],[15],[30] $ 2,339 [6],[13],[16],[27]    
Cost 0 [3],[11],[15],[30] 2,328 [6],[13],[16],[27]    
Fair value 0 [7],[11],[15],[30] 1,595 [8],[13],[16],[27]    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 0    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1.2        
Schedule of Investments [Line Items]        
Total Rate 6.00%      
PIK Rate 6.00%      
Fair value $ 13,115 0    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1.3        
Schedule of Investments [Line Items]        
Fair value 0 1,595    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1.4        
Schedule of Investments [Line Items]        
Fair value 0 275    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1.5        
Schedule of Investments [Line Items]        
Fair value 1 11,314    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 1.6        
Schedule of Investments [Line Items]        
Fair value $ (1) $ 9,049    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 6.00% [11],[15] 12.00% [13],[16],[27]    
PIK Rate 6.00% [11],[15],[25] 4.00% [13],[16],[26],[27]    
Principal $ 13,480 [3],[11],[15] $ 403 [6],[13],[16],[27]    
Cost 13,480 [3],[11],[15] 394 [6],[13],[16],[27]    
Fair value $ 13,115 [7],[11],[15] $ 275 [8],[13],[16],[27]    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[27]   12.00%    
PIK Rate [13],[16],[26],[27]   4.00%    
Principal [6],[13],[16],[27]   $ 16,589    
Cost [6],[13],[16],[27]   16,527    
Fair value [8],[13],[16],[27]   $ 11,314    
Investment, Identifier [Axis]: Watterson Brands, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[16],[27]   12.00%    
PIK Rate [13],[16],[26],[27]   4.00%    
Principal [6],[13],[16],[27]   $ 13,269    
Cost [6],[13],[16],[27]   13,219    
Fair value [8],[13],[16],[27]   $ 9,049    
Investment, Identifier [Axis]: Wildcats Topco LLC (NVS Heritage) | Common Equity        
Schedule of Investments [Line Items]        
Fair value     22,760 0
Investment, Identifier [Axis]: Wildcats Topco LLC | Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 22,426,711 [11] 22,426,711 [12]    
Cost $ 22,427 [3],[11] $ 22,427 [6],[12]    
Fair value $ 26,520 [7],[11] $ 22,760 [8],[12]    
Investment, Identifier [Axis]: Winter Services LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.66% [14],[15],[31],[43] 11.49% [13],[16],[34],[38]    
Spread (as a percent) 7.50% [14],[15],[29],[31],[43] 7.50% [13],[16],[32],[34],[38]    
Principal $ 889 [3],[14],[15],[31],[43] $ 4,000 [6],[13],[16],[34],[38]    
Cost 848 [3],[14],[15],[31],[43] 3,980 [6],[13],[16],[34],[38]    
Fair value $ 889 [7],[14],[15],[31],[43] $ 4,000 [8],[13],[16],[34],[38]    
Investment, Identifier [Axis]: Winter Services LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.99% [14],[15],[31] 11.75% [13],[16],[34]    
Spread (as a percent) 8.00% [14],[15],[29],[31] 7.50% [13],[16],[32],[34]    
Principal $ 1,874 [3],[14],[15],[31] $ 1,874 [6],[13],[16],[34]    
Cost 1,869 [3],[14],[15],[31] 1,865 [6],[13],[16],[34]    
Fair value $ 1,874 [7],[14],[15],[31] $ 1,874 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Winter Services LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.99% [14],[15],[31] 10.75% [13],[16],[34]    
Spread (as a percent) 7.00% [14],[15],[29],[31] 6.50% [13],[16],[32],[34]    
Principal $ 7,240 [3],[14],[15],[31] $ 7,240 [6],[13],[16],[34]    
Cost 7,044 [3],[14],[15],[31] 7,185 [6],[13],[16],[34]    
Fair value $ 7,240 [7],[14],[15],[31] $ 7,240 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Winter Services LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.99% [14],[15],[31] 12.75% [13],[16],[34]    
Spread (as a percent) 9.00% [14],[15],[29],[31] 8.50% [13],[16],[32],[34]    
Principal $ 7,240 [3],[14],[15],[31] $ 7,240 [6],[13],[16],[34]    
Cost 7,206 [3],[14],[15],[31] 7,185 [6],[13],[16],[34]    
Fair value $ 7,240 [7],[14],[15],[31] $ 7,240 [8],[13],[16],[34]    
Investment, Identifier [Axis]: World Micro Holdings, LLC | Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,845 [11],[35] 3,845 [12],[36]    
Cost $ 3,845 [3],[11],[35] $ 3,845 [6],[12],[36]    
Fair value $ 3,845 [7],[11],[35] $ 3,845 [8],[12],[36] $ 3,845 3,845
Investment, Identifier [Axis]: World Micro Holdings, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% [11] 12.00% [12] 11.00%  
Principal $ 8,568 [3],[11] $ 9,886 [6],[12]    
Cost 8,548 [3],[11] 9,848 [6],[12]    
Fair value $ 8,548 [7],[11] $ 9,848 [8],[12] $ 9,844 10,702
Investment, Identifier [Axis]: Xenon Arc, Inc. | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.14% [14],[15],[31] 9.54% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 5.75% [13],[16],[32],[34]    
Principal $ 23,389 [3],[14],[15],[31] $ 23,571 [6],[13],[16],[34]    
Cost 23,242 [3],[14],[15],[31] 23,374 [6],[13],[16],[34]    
Fair value $ 23,389 [7],[14],[15],[31] $ 23,571 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Xenon Arc, Inc. | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.83% [14],[15],[31] 9.72% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 5.75% [13],[16],[32],[34]    
Principal $ 36,766 [3],[14],[15],[31] $ 37,056 [6],[13],[16],[34]    
Cost 36,556 [3],[15],[31] 36,774 [6],[13],[16],[34]    
Fair value $ 36,766 [7],[15],[31] $ 37,056 [8],[13],[16],[34]    
Investment, Identifier [Axis]: Xenon Arc, Inc. | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.17% [14],[15],[31] 9.52% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 5.75% [13],[16],[32],[34]    
Principal $ 10,472 [3],[14],[15],[31] $ 10,552 [6],[13],[16],[34]    
Cost 10,349 [3],[14],[15],[31] 10,386 [6],[13],[16],[34]    
Fair value $ 10,472 [7],[14],[15],[31] $ 10,552 [8],[13],[16],[34]    
Investment, Identifier [Axis]: YS Garments, LLC | Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.46% [14],[21],[31],[60] 11.48% [13],[22],[34],[61]    
Spread (as a percent) 7.50% [14],[21],[29],[31],[60] 7.50% [13],[22],[32],[34],[61]    
Principal $ 10,592 [3],[14],[21],[31],[60] $ 10,592 [6],[13],[22],[34],[61]    
Cost 10,547 [3],[14],[21],[31],[60] 10,507 [6],[13],[22],[34],[61]    
Fair value $ 8,589 [7],[14],[21],[31],[60] $ 8,893 [8],[13],[22],[34],[61]    
Investment, Identifier [Axis]: ZRG Partners, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [14],[15],[31] 11.75% [13],[16],[34]    
Spread (as a percent) 5.00% [14],[15],[29],[31] 5.00% [13],[16],[32],[34]    
Principal $ 4,864 [14],[15],[31] $ 6,601 [6],[13],[16],[34]    
Cost 4,751 [3],[14],[15],[31] 6,457 [6],[13],[16],[34]    
Fair value $ 4,864 [7],[14],[15],[31] $ 6,601 [8],[13],[16],[34]    
Investment, Identifier [Axis]: ZRG Partners, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31],[60] 9.69% [13],[16],[34],[61]    
Spread (as a percent) 6.00% [14],[15],[29],[31],[60] 6.00% [13],[16],[32],[34],[61]    
Principal $ 15,839 [14],[15],[31],[60] $ 11,781 [6],[13],[16],[34],[61]    
Cost 15,630 [3],[14],[15],[31],[60] 11,558 [6],[13],[16],[34],[61]    
Fair value $ 15,839 [7],[14],[15],[31],[60] $ 11,781 [8],[13],[16],[34],[61]    
Investment, Identifier [Axis]: ZRG Partners, LLC | Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.85% [14],[15],[31] 9.60% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31] 6.00% [13],[16],[32],[34]    
Principal $ 6,452 [14],[15],[31] $ 6,502 [6],[13],[16],[34]    
Cost 6,380 [3],[14],[15],[31] 6,409 [6],[13],[16],[34]    
Fair value $ 6,452 [7],[14],[15],[31] $ 6,502 [8],[13],[16],[34]    
Investment, Identifier [Axis]: ZRG Partners, LLC | Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 10.07% [14],[15],[31],[60] 9.73% [13],[16],[34]    
Spread (as a percent) 6.00% [14],[15],[29],[31],[60] 6.00% [13],[16],[32],[34]    
Principal $ 7,500 [14],[15],[31],[60] $ 46,518 [6],[13],[16],[34]    
Cost 7,363 [3],[14],[15],[31],[60] 45,853 [6],[13],[16],[34]    
Fair value $ 7,500 [7],[14],[15],[31],[60] $ 46,518 [8],[13],[16],[34]    
Investment, Identifier [Axis]: ZRG Partners, LLC | Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [14],[15],[31] 10.04%      
Spread (as a percent) [14],[15],[29],[31] 6.00%      
Principal [14],[15],[31] $ 46,119      
Cost [3],[14],[15],[31] 45,602      
Fair value [7],[14],[15],[31] $ 46,119      
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC | Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 16,878 [9] 16,878 [10]    
Cost $ 3,154 [3],[9] $ 3,154 [6],[10]    
Fair value $ 0 [7],[9] $ 50 [8],[10] $ 130 320
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC | Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10] 12.00%  
Principal $ 500 [3],[9] $ 150 [6],[10]    
Cost 500 [3],[9] 150 [6],[10]    
Fair value $ 500 [7],[9] $ 150 [8],[10] $ 150 0
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC | Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [9] 12.00% [10] 12.00%  
Principal $ 1,750 [3],[9] $ 1,750 [6],[10]    
Cost 1,750 [3],[9] 1,750 [6],[10]    
Fair value $ 1,112 [7],[9] $ 1,687 [8],[10] $ 1,686 1,750
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC | Warrants        
Schedule of Investments [Line Items]        
Fair value     $ 0 $ 0
[1] All portfolio company headquarters are based in the U.S., unless otherwise noted.
[2] All investments are LMM (as defined below) portfolio investments, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of LMM portfolio investments. All of the Company’s investments, unless otherwise noted, are encumbered either as security for the Corporate Facility or SPV Facility (each as defined below) or in support of the debentures guaranteed by the SBA (as defined below) and issued by the Funds (as defined below).
[3] 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.
[4] All portfolio company headquarters are based in the U.S., unless otherwise noted.
[5] All investments are LMM portfolio investments, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of LMM portfolio investments. All of the Company’s investments, unless otherwise noted, are encumbered either as security for the Corporate Facility or SPV Facility or in support of the debentures guaranteed by the SBA and issued by the Funds.
[6] 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.
[7] 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.
[8] 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.
[9] “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.
[10] “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.
[11] “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.
[12] “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.
[13] “Non-Control/Non-Affiliate” investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[14] “Non-Control/Non-Affiliate” investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[15] Private Loan (as defined below) portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments.
[16] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments.
[17] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act (as defined below). Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets.
[18] Other Portfolio (as defined below) investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments.
[19] 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.
[20] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments.
[21] Middle Market (as defined below) portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments.
[22] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments.
[23] Portfolio company headquarters are located outside of the U.S.
[24] Portfolio company headquarters are located outside of the U.S.
[25] Investments may have a portion, or all, of their income received from Payment-in-Kind (“PIK”) interest or dividends. PIK interest income and cumulative dividend income represent income not paid currently in cash. The difference between the Total Rate and PIK Rate represents the cash rate as of September 30, 2026.
[26] Investments may have a portion, or all, of their income received from PIK interest or dividends. PIK interest income and cumulative dividend income represent income not paid currently in cash. The difference between the Total Rate and PIK Rate represents the cash rate as of December 31, 2025.
[27] Non-accrual or non-income producing debt investment.
[28] Debt investment currently on non-accrual status.
[29] A majority of the variable rate loans in the Investment Portfolio (as defined below) bear interest at a rate that may be determined by reference to either 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, plus the Adjustment, exceeds the stated floor rate, as applicable. As of September 30, 2026, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%.
[30] The position is unfunded and no interest income is being earned as of September 30, 2026. The position may earn a nominal unused facility fee on committed amounts.
[31] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 96% of the loans (based on the par amount) contain Term Secured Overnight Financing Rate (“SOFR”) floors which range between 0.50% and 5.25%, with a weighted-average floor of 1.27%.
[32] A majority of the variable rate loans in the Investment Portfolio bear interest at a rate that may be determined by reference to either 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, plus the Adjustment, exceeds the stated floor rate, as applicable. As of December 31, 2025, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%.
[33] The position is unfunded and no interest income is being earned as of December 31, 2025. The position may earn a nominal unused facility fee on committed amounts.
[34] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 96% of the loans (based on the par amount) contain Term SOFR floors which range between 0.50% and 5.25%, with a weighted-average floor of 1.31%.
[35] Income producing through dividends or distributions.
[36] Income producing through dividends or distributions.
[37] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[38] Revolving line of credit 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, 2025.
[39]
(33)Index based floating interest rate is subject to contractual maximum base rate of 3.00%.
[40] Index based floating interest rate is subject to contractual maximum base rate of 3.00%.
[41]
(27)Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit.
[42] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit.
[43] Revolving line of credit 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, 2026.
[44] Shares/Units represent ownership in a related real estate or holding entity.
[45] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[46] 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+7.50% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[47] 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+6.50% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[48]
(29)Shares/Units represent ownership in a related real estate or holding entity.
[49]
(30)Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated.
[50] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated.
[51] Non-income producing debt investment.
[52] Effective yield as of September 30, 2026 was approximately 3.63% on the Dreyfus Government Cash Management.
[53] Effective yield as of December 31, 2025 was approximately 3.70% on the Dreyfus Government Cash Management.
[54] Effective yield as of September 30, 2026 was approximately 3.48% on the Fidelity Government Fund.
[55] Effective yield as of December 31, 2025 was approximately 3.43% on the Fidelity Government Fund.
[56]
(31)Effective yield as of September 30, 2026 was approximately 3.52% on the Fidelity Treasury.
[57] Effective yield as of December 31, 2025 was approximately 3.43% on the Fidelity Treasury.
[58]
(34)Index based floating interest rate is subject to contractual maximum base rate of 4.00%.
[59] Index based floating interest rate is subject to contractual maximum base rate of 4.00%.
[60] 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, 2026.
[61] Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2025.
[62] Investment is accruing income at the fixed cash rate of 2.50% as of December 31, 2025.
[63] External Investment Manager (as defined below). Investment is not encumbered as security for the Credit Facilities (as defined below) or in support of the SBA-guaranteed debentures issued by the Funds.
[64] External Investment Manager. Investment is not encumbered as security for the Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds.
[65] 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 11.85% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[66] 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 11.80% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.