Quarterly report pursuant to Section 13 or 15(d)

Consolidated Schedule of Investments

v3.24.3
Consolidated Schedule of Investments - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]        
Cost $ 1,132,577 [1] $ 1,038,318 [2]    
Fair value $ 1,162,627 [3] $ 1,092,895 [4]    
Investment owned, percent of net assets (as a percent) 188.00% 175.60%    
Money market funds        
Schedule of Investments [Line Items]        
Cost $ 31,195 [1] $ 20,844 [2],[5]    
Fair value 31,195 [3] 20,844 [4],[5]    
Control investments        
Schedule of Investments [Line Items]        
Cost 41,717 [1],[6] 43,159 [2],[7]    
Fair value $ 56,833 [3],[6] $ 53,644 [4],[7] $ 54,066 $ 50,303
Investment owned, percent of net assets (as a percent) 9.20% 8.60%    
Affiliate investments        
Schedule of Investments [Line Items]        
Cost $ 254,666 [1],[8] $ 231,378 [2],[9]    
Fair value $ 315,190 [3],[8] $ 291,279 [4],[9] 275,889 277,000
Investment owned, percent of net assets (as a percent) 51.00% 46.80%    
Non‑Control/Non‑Affiliate investments        
Schedule of Investments [Line Items]        
Cost $ 836,194 [1],[10] $ 763,781 [2],[11]    
Fair value $ 790,604 [3],[10] $ 747,972 [4],[11]    
Investment owned, percent of net assets (as a percent) 127.80% 120.20%    
GRT Rubber Technologies LLC        
Schedule of Investments [Line Items]        
Cost $ 27,812 $ 27,411    
Fair value 43,384 43,016    
Volusion, LLC        
Schedule of Investments [Line Items]        
Cost 9,905 11,710    
Fair value 4,100 4,010    
Analytical Systems Keco Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,510 2,560    
Fair value 2,454 2,284    
Batjer TopCo, LLC        
Schedule of Investments [Line Items]        
Cost 1,698 1,644    
Fair value 1,813 1,885    
Brewer Crane Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,355 2,445    
Fair value 2,645 2,774    
Centre Technologies Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 6,593 5,895    
Fair value 8,106 7,154    
Chamberlin Holding LLC        
Schedule of Investments [Line Items]        
Cost 7,175 7,157    
Fair value 12,340 11,950    
Clad-Rex Steel, LLC        
Schedule of Investments [Line Items]        
Cost 3,974 4,338    
Fair value 4,474 3,936    
Cody Pools, Inc.        
Schedule of Investments [Line Items]        
Cost 8,774 9,166    
Fair value 24,202 25,231    
Colonial Electric Company LLC        
Schedule of Investments [Line Items]        
Cost 5,945 7,608    
Fair value 7,336 7,927    
Compass Systems & Sales, LLC        
Schedule of Investments [Line Items]        
Cost 6,040 6,038    
Fair value 6,157 6,038    
Datacom, LLC        
Schedule of Investments [Line Items]        
Cost 1,210 1,226    
Fair value 924 903    
Digital Products Holdings LLC        
Schedule of Investments [Line Items]        
Cost 5,595 6,064    
Fair value 5,662 6,132    
Direct Marketing Solutions, Inc.        
Schedule of Investments [Line Items]        
Cost 6,833 7,287    
Fair value 9,571 10,399    
Gamber-Johnson Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 16,409 17,759    
Fair value 38,960 37,700    
GFG Group, LLC        
Schedule of Investments [Line Items]        
Cost 3,252 3,529    
Fair value 4,686 5,206    
Gulf Publishing Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,920 2,920    
Fair value 351 1,191    
IG Investor, LLC        
Schedule of Investments [Line Items]        
Cost 12,765 12,642    
Fair value 12,885 12,642    
Integral Energy Services        
Schedule of Investments [Line Items]        
Cost 16,845 [12] 18,586 [13]    
Fair value 15,906 [12] 16,772 [13]    
Kickhaefer Manufacturing Company, LLC        
Schedule of Investments [Line Items]        
Cost 8,431 9,192    
Fair value 8,806 8,987    
MH Corbin Holding LLC        
Schedule of Investments [Line Items]        
Cost 3,910 3,950    
Fair value 345 1,336    
Mystic Logistics Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,112 2,116    
Fair value 7,966 8,034    
Nello Industries Investco, LLC        
Schedule of Investments [Line Items]        
Cost 13,227      
Fair value 13,227      
NexRev LLC        
Schedule of Investments [Line Items]        
Cost 4,989 4,488    
Fair value 5,403 4,025    
NuStep, LLC        
Schedule of Investments [Line Items]        
Cost 8,962 8,570    
Fair value 9,609 9,105    
Orttech Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 7,948 7,950    
Fair value 9,160 9,770    
Pinnacle TopCo, LLC        
Schedule of Investments [Line Items]        
Cost 10,235 10,712    
Fair value 11,600 10,712    
RA Outdoors LLC        
Schedule of Investments [Line Items]        
Cost 14,980 [12] 13,618 [13]    
Fair value 13,631 [12] 12,834 [13]    
Robbins Bros. Jewelry, Inc.        
Schedule of Investments [Line Items]        
Cost 4,924 4,969    
Fair value 1,708 3,415    
SI East, LLC        
Schedule of Investments [Line Items]        
Cost 23,783 18,897    
Fair value 28,694 24,944    
Student Resource Center, LLC        
Schedule of Investments [Line Items]        
Cost 5,648 [12] 5,426 [13]    
Fair value 2,049 [12] 3,543 [13]    
Tedder Industries, LLC        
Schedule of Investments [Line Items]        
Cost 6,877 6,877    
Fair value 1,596 3,997    
Trantech Radiator Topco, LLC        
Schedule of Investments [Line Items]        
Cost 3,123 3,138    
Fair value 4,360 5,160    
VVS Holdco LLC        
Schedule of Investments [Line Items]        
Cost 9,732 9,986    
Fair value 9,732 9,986    
AAC Holdings, Inc.        
Schedule of Investments [Line Items]        
Cost 9,001 [14] 8,185 [15]    
Fair value 5,858 [14] 5,107 [15]    
Adams Publishing Group, LLC        
Schedule of Investments [Line Items]        
Cost 3,261 [12] 3,463 [13]    
Fair value 3,198 [12] 3,398 [13]    
American Health Staffing Group, Inc.        
Schedule of Investments [Line Items]        
Cost 7,662 [12] 8,130 [13]    
Fair value 7,696 [12] 8,178 [13]    
American Nuts, LLC        
Schedule of Investments [Line Items]        
Cost 9,655 [12] 9,056 [13]    
Fair value 7,407 [12] 6,624 [13]    
American Teleconferencing Services, Ltd.        
Schedule of Investments [Line Items]        
Cost 13,826 [14] 13,826 [15]    
Fair value 341 [14] 635 [15]    
Ansira Partners II, LLC        
Schedule of Investments [Line Items]        
Cost [12] 17,745      
Fair value [12] 17,745      
ArborWorks, LLC        
Schedule of Investments [Line Items]        
Cost 13,855 [12] 12,364 [13]    
Fair value 12,930 [12] 12,240 [13]    
ATS Operating, LLC        
Schedule of Investments [Line Items]        
Cost 2,035 [12] 1,972 [13]    
Fair value 2,055 [12] 1,990 [13]    
AVEX Aviation Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 3,407 [12] 3,438 [13]    
Fair value 3,462 [12] 3,463 [13]    
Berry Aviation, Inc.        
Schedule of Investments [Line Items]        
Cost 286 [12] 0 [13]    
Fair value 0 [12] 2,760 [13]    
Bettercloud, Inc.        
Schedule of Investments [Line Items]        
Cost 8,924 [12] 8,401 [13]    
Fair value 7,529 [12] 7,980 [13]    
Bluestem Brands, Inc.        
Schedule of Investments [Line Items]        
Cost 8,911 [14] 6,451 [15]    
Fair value 7,553 [14] 6,264 [15]    
Boccella Precast Products LLC        
Schedule of Investments [Line Items]        
Cost 644 644    
Fair value 146 578    
Bond Brand Loyalty ULC        
Schedule of Investments [Line Items]        
Cost 8,251 [12],[16],[17] 8,284 [13],[18],[19]    
Fair value 8,317 [12],[16],[17] 8,374 [13],[18],[19]    
BP Loenbro Holdings Inc.        
Schedule of Investments [Line Items]        
Cost [12] 12,828      
Fair value [12] 13,598      
Brightwood Capital Fund Investments        
Schedule of Investments [Line Items]        
Cost 10,611 [16],[20] 11,007 [18],[21]    
Fair value 9,958 [16],[20] 10,076 [18],[21]    
Buca C, LLC        
Schedule of Investments [Line Items]        
Cost 20,166 14,530    
Fair value 10,817 8,218    
Burning Glass Intermediate Holding Company, Inc.        
Schedule of Investments [Line Items]        
Cost 11,997 [12] 13,266 [13]    
Fair value 12,125 [12] 13,431 [13]    
CAI Software LLC        
Schedule of Investments [Line Items]        
Cost 454 379    
Fair value 472 379    
Career Team Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,747 2,781    
Fair value 2,747 2,781    
CenterPeak Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,762      
Fair value 3,980      
Channel Partners Intermediateco, LLC        
Schedule of Investments [Line Items]        
Cost 4,380 [12] 4,116 [13]    
Fair value 4,153 [12] 4,018 [13]    
Computer Data Source, LLC        
Schedule of Investments [Line Items]        
Cost 21,091 [12] 19,221 [13]    
Fair value 20,891 [12] 18,837 [13]    
Coregistics Buyer LLC        
Schedule of Investments [Line Items]        
Cost [12],[16],[17] 13,569      
Fair value [12],[16],[17] 13,464      
CQ Fluency, LLC        
Schedule of Investments [Line Items]        
Cost 7,072 [12] 7,192 [13]    
Fair value 7,100 [12] 7,192 [13]    
Creative Foam Corporation        
Schedule of Investments [Line Items]        
Cost [12] 10,637      
Fair value [12] 10,704      
DMA Industries, LLC        
Schedule of Investments [Line Items]        
Cost 6,563 6,128    
Fair value 6,563 6,620    
DTE Enterprises, LLC        
Schedule of Investments [Line Items]        
Cost 2,092 [12] 2,060 [13]    
Fair value 681 [12] 1,543 [13]    
Dynamic Communities, LLC        
Schedule of Investments [Line Items]        
Cost 4,322 [12] 3,919 [13]    
Fair value 4,354 [12] 3,831 [13]    
Elgin AcquireCo, LLC        
Schedule of Investments [Line Items]        
Cost 2,042 2,085    
Fair value 2,132 2,108    
Escalent, Inc.        
Schedule of Investments [Line Items]        
Cost 6,882 [12] 6,907 [13]    
Fair value 7,104 [12] 7,105 [13]    
Event Holdco, LLC        
Schedule of Investments [Line Items]        
Cost 4,199 [12] 3,965 [13]    
Fair value 4,217 [12] 3,916 [13]    
FCC Intermediate Holdco, LLC        
Schedule of Investments [Line Items]        
Cost 8,054      
Fair value 8,054      
Garyline, LLC        
Schedule of Investments [Line Items]        
Cost 11,310 [12] 9,518 [13]    
Fair value 11,373 [12] 9,518 [13]    
Hawk Ridge Systems, LLC        
Schedule of Investments [Line Items]        
Cost 11,105 10,940    
Fair value 15,384 14,838    
HDC/HW Intermediate Holdings        
Schedule of Investments [Line Items]        
Cost 1,690 [12] 2,241 [13]    
Fair value 1,648 [12] 2,035 [13]    
HEADLANDS OP-CO LLC        
Schedule of Investments [Line Items]        
Cost 9,124 [12] 6,802 [13]    
Fair value 9,226 [12] 6,906 [13]    
Hornblower Sub, LLC        
Schedule of Investments [Line Items]        
Cost [12] 15,344      
Fair value [12] 15,344      
IG Parent Corporation        
Schedule of Investments [Line Items]        
Cost 8,308 [14] 8,108 [15]    
Fair value 8,387 [14] 8,208 [15]    
Imaging Business Machines, L.L.C.        
Schedule of Investments [Line Items]        
Cost 11,215 [12] 11,439 [13]    
Fair value 11,439 [12] 11,654 [13]    
Infinity X1 Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 4,858 5,314    
Fair value 5,496 5,314    
Insight Borrower Corporation        
Schedule of Investments [Line Items]        
Cost 8,287 [12] 8,309 [13]    
Fair value 7,947 [12] 8,453 [13]    
Inspire Aesthetics Management, LLC        
Schedule of Investments [Line Items]        
Cost 8,304 [12] 8,327 [13]    
Fair value 7,336 [12] 8,235 [13]    
Interface Security Systems, L.L.C        
Schedule of Investments [Line Items]        
Cost 9,252 [12] 9,089 [13]    
Fair value 1,853 [12] 2,214 [13]    
Invincible Boat Company, LLC.        
Schedule of Investments [Line Items]        
Cost 17,815 [12] 17,267 [13]    
Fair value 17,061 [12] 17,024 [13]    
Iron-Main Investments, LLC        
Schedule of Investments [Line Items]        
Cost 11,709 12,095    
Fair value 11,742 12,076    
Isagenix International, LLC        
Schedule of Investments [Line Items]        
Cost 2,700 [14] 2,374 [15]    
Fair value 797 [14] 2,301 [15]    
Island Pump and Tank, LLC        
Schedule of Investments [Line Items]        
Cost [12] 5,112      
Fair value [12] 5,052      
ITA Holdings Group, LLC        
Schedule of Investments [Line Items]        
Cost 2,895 2,588    
Fair value 3,192 2,588    
Jackmont Hospitality, Inc.        
Schedule of Investments [Line Items]        
Cost 6,802 [12] 5,813 [13]    
Fair value 8,336 [12] 7,813 [13]    
JDC Power Services, LLC        
Schedule of Investments [Line Items]        
Cost [12] 17,318      
Fair value [12] 17,027      
Joerns Healthcare, LLC        
Schedule of Investments [Line Items]        
Cost 8,413 [14] 9,062 [15]    
Fair value 2,887 [14] 1,985 [15]    
JorVet Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 3,944 4,007    
Fair value 3,973 4,007    
JTI Electrical & Mechanical, LLC        
Schedule of Investments [Line Items]        
Cost 4,060 [12] 3,356 [13]    
Fair value 3,768 [12] 3,401 [13]    
KMS, LLC        
Schedule of Investments [Line Items]        
Cost 10,413 [12] 10,440 [13]    
Fair value 7,933 [12] 9,655 [13]    
LL Management, Inc.        
Schedule of Investments [Line Items]        
Cost 23,048 [12] 22,810 [13]    
Fair value 23,267 [12] 22,899 [13]    
Mako Steel, LP        
Schedule of Investments [Line Items]        
Cost 20,990 [12] 16,532 [13]    
Fair value 21,222 [12] 16,721 [13]    
Metalforming Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,180 2,263    
Fair value 2,383 2,260    
Microbe Formulas, LLC        
Schedule of Investments [Line Items]        
Cost 2,461 [12] 2,626 [13]    
Fair value 2,492 [12] 2,665 [13]    
Mini Melts of America, LLC        
Schedule of Investments [Line Items]        
Cost 8,379 [12] 6,557 [13]    
Fair value 8,553 [12] 6,557 [13]    
MoneyThumb Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost 2,748      
Fair value 2,748      
MonitorUS Holding, LLC        
Schedule of Investments [Line Items]        
Cost 9,504 [12],[16],[17] 9,122 [13],[18],[19]    
Fair value 9,898 [12],[16],[17] 9,471 [13],[18],[19]    
NinjaTrader, LLC        
Schedule of Investments [Line Items]        
Cost 14,518 [12] 14,679 [13]    
Fair value 14,648 [12] 14,854 [13]    
Obra Capital, Inc.        
Schedule of Investments [Line Items]        
Cost [12] 11,629      
Fair value [12] 11,500      
Power System Solutions        
Schedule of Investments [Line Items]        
Cost 10,791 [12] 8,191 [13]    
Fair value 11,856 [12] 8,369 [13]    
PrimeFlight Aviation Services        
Schedule of Investments [Line Items]        
Cost 7,498 [12] 6,366 [13]    
Fair value 7,706 [12] 6,540 [13]    
PTL US Bidco, Inc        
Schedule of Investments [Line Items]        
Cost 1,845 [12],[16],[17] 1,896 [13],[18],[19]    
Fair value 1,845 [12],[16],[17] 1,916 [13],[18],[19]    
Purge Rite, LLC        
Schedule of Investments [Line Items]        
Cost 5,114 [12] 5,096 [13]    
Fair value 5,699 [12] 5,096 [13]    
Richardson Sales Solutions        
Schedule of Investments [Line Items]        
Cost 16,394 [12] 11,042 [13]    
Fair value 16,525 [12] 11,180 [13]    
Roof Opco, LLC        
Schedule of Investments [Line Items]        
Cost 8,309 [12] 8,290 [13]    
Fair value 8,073 [12] 8,224 [13]    
Rug Doctor, LLC.        
Schedule of Investments [Line Items]        
Cost 14,942 [12] 15,380 [13]    
Fair value 14,974 [12] 15,367 [13]    
Slick Innovations, LLC        
Schedule of Investments [Line Items]        
Cost 4,087 2,891    
Fair value 4,740 3,460    
South Coast Terminals Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 4,416 [12] 3,038 [13]    
Fair value 4,414 [12] 3,072 [13]    
SPAU Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 5,803 [12] 5,043 [13]    
Fair value 5,858 [12] 5,085 [13]    
The Affiliati Network, LLC        
Schedule of Investments [Line Items]        
Cost 3,051 3,538    
Fair value 3,035 3,521    
Titan Meter Midco Corp.        
Schedule of Investments [Line Items]        
Cost [12] 13,102      
Fair value [12] 13,270      
U.S. TelePacific Corp.        
Schedule of Investments [Line Items]        
Cost 2,473 [14] 2,638 [15]    
Fair value 2,702 [14] 2,438 [15]    
UPS Intermediate, LLC        
Schedule of Investments [Line Items]        
Cost [12] 19,559      
Fair value [12] 19,559      
Urgent DSO LLC        
Schedule of Investments [Line Items]        
Cost 3,199      
Fair value 3,199      
Vitesse Systems        
Schedule of Investments [Line Items]        
Cost [12] 13,812      
Fair value [12] 14,111      
Wall Street Prep, Inc.        
Schedule of Investments [Line Items]        
Cost 4,198 [12] 5,095 [13]    
Fair value 4,889 [12] 5,559 [13]    
Watterson Brands, LLC        
Schedule of Investments [Line Items]        
Cost 4,464 [12] 4,378 [13]    
Fair value 4,257 [12] 4,427 [13]    
West Star Aviation Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost 5,170 [12] 5,199 [13]    
Fair value 5,633 [12] 5,469 [13]    
Winter Services LLC        
Schedule of Investments [Line Items]        
Cost 20,867 [12] 16,752 [13]    
Fair value 20,416 [12] 16,986 [13]    
World Micro Holdings, LLC        
Schedule of Investments [Line Items]        
Cost 2,116 2,131    
Fair value 2,116 2,131    
Xenon Arc, Inc.        
Schedule of Investments [Line Items]        
Cost 3,468 [12] 3,479 [13]    
Fair value 3,513 [12] 3,540 [13]    
Zips Car Wash, LLC        
Schedule of Investments [Line Items]        
Cost 2,951 [12] 2,941 [13]    
Fair value 2,774 [12] 2,789 [13]    
ZRG Partners, LLC        
Schedule of Investments [Line Items]        
Cost [12] 8,546      
Fair value [12] $ 8,497      
Oneliance, LLC        
Schedule of Investments [Line Items]        
Cost   1,628    
Fair value   1,621    
AB Centers Acquisition Corporation        
Schedule of Investments [Line Items]        
Cost [13]   4,008    
Fair value [13]   4,157    
Acumera, Inc.        
Schedule of Investments [Line Items]        
Cost [13]   11,817    
Fair value [13]   12,004    
AMEREQUIP LLC        
Schedule of Investments [Line Items]        
Cost [13]   1,621    
Fair value [13]   1,638    
CaseWorthy, Inc.        
Schedule of Investments [Line Items]        
Cost [13]   4,609    
Fair value [13]   4,643    
Classic H&G Holdings, LLC        
Schedule of Investments [Line Items]        
Cost   7,354    
Fair value   9,959    
Engineering Research & Consulting, LLC        
Schedule of Investments [Line Items]        
Cost [13]   5,012    
Fair value [13]   5,095    
Industrial Services Acquisition, LLC        
Schedule of Investments [Line Items]        
Cost [13]   14,725    
Fair value [13]   14,492    
Infolinks Media Buyco, LLC        
Schedule of Investments [Line Items]        
Cost [13]   11,408    
Fair value [13]   11,571    
Johnson Downie Opco, LLC        
Schedule of Investments [Line Items]        
Cost   3,045    
Fair value   3,760    
MB2 Dental Solutions, LLC        
Schedule of Investments [Line Items]        
Cost [15]   17,800    
Fair value [15]   17,988    
Paragon Healthcare, Inc.        
Schedule of Investments [Line Items]        
Cost [13]   2,815    
Fair value [13]   2,863    
USA DeBusk LLC        
Schedule of Investments [Line Items]        
Cost [13]   19,518    
Fair value [13]   $ 19,745    
Investment, Identifier [Axis]: Fidelity Government Portfolio Fund Class III        
Schedule of Investments [Line Items]        
Total Rate 4.58%      
Cost [22] $ 20,397      
Fair value [22] $ 20,397      
Investment, Identifier [Axis]: AAC Holdings, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 593,927 [14] 593,927 [15]    
Cost $ 3,148 [14] $ 3,148 [15]    
Fair value $ 0 [14] $ 0 [15]    
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 18.00% [14] 18.00% [15]    
PIK Rate 18.00% [14] 18.00% [15]    
Principal $ 173 [14] $ 151 [15]    
Cost 172 [14] 149 [15]    
Fair value $ 171 [14] $ 149 [15]    
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 18.00% [14] 18.00% [15]    
PIK Rate 18.00% [14] 18.00% [15]    
Principal $ 5,745 [14] $ 5,014 [15]    
Cost 5,681 [14] 4,888 [15]    
Fair value $ 5,687 [14] $ 4,958 [15]    
Investment, Identifier [Axis]: AAC Holdings, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 197,717 [14],[23] 197,717 [15],[24]    
Cost $ 0 [14],[23] $ 0 [15],[24]    
Fair value $ 0 [14],[23] $ 0 [15],[24]    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   5.00%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (20)    
Fair value [13],[25],[26]   $ 0    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.43%    
Spread (as a percent) [13],[26]   6.00%    
Principal [13],[26]   $ 1,081    
Cost [13],[26]   1,066    
Fair value [13],[26]   $ 1,081    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.43%    
Spread (as a percent) [13],[26]   6.00%    
Principal [13],[26]   $ 2,304    
Cost [13],[26]   2,219    
Fair value [13],[26]   $ 2,304    
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.43%    
Spread (as a percent) [13],[26]   6.00%    
Principal [13],[26]   $ 772    
Cost [13],[26]   743    
Fair value [13],[26]   $ 772    
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.22%    
Spread (as a percent) [15],[26]   5.75%    
Principal [15],[26]   $ 4,250    
Cost [15],[26]   4,210    
Fair value [15],[26]   $ 4,214    
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Fair value     0 2,350
Investment, Identifier [Axis]: AMEREQUIP LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 11 [12],[27] 11 [13],[28]    
Cost $ 83 [12],[27] $ 83 [13],[28]    
Fair value $ 40 [12],[27] $ 100 [13],[28]    
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   7.40%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   0    
Fair value [13],[25],[26]   $ 0    
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.76%    
Spread (as a percent) [13],[26]   7.40%    
Principal [13],[26]   $ 1,538    
Cost [13],[26]   1,538    
Fair value [13],[26]   $ 1,538    
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 100,000 [12] 100,000 [13]    
Cost $ 100 [12] $ 100 [13]    
Fair value $ 100 [12] $ 90 [13]    
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.59% [12],[29] 12.16% [13],[26]    
Spread (as a percent) 6.00% [12],[29] 6.50% [13],[26]    
Principal $ 105 [12],[29] $ 50 [13],[26]    
Cost 105 [12],[29] 50 [13],[26]    
Fair value $ 105 [12],[29] $ 50 [13],[26]    
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.59% [12],[29] 11.16% [13],[26]    
Spread (as a percent) 5.00% [12],[29] 5.50% [13],[26]    
Principal $ 925 [12],[29] $ 925 [13],[26]    
Cost 915 [12],[29] 911 [13],[26]    
Fair value $ 925 [12],[29] $ 925 [13],[26]    
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.59% [12],[29] 13.16% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.50% [13],[26]    
Principal $ 925 [12],[29] $ 925 [13],[26]    
Cost 915 [12],[29] 911 [13],[26]    
Fair value $ 925 [12],[29] $ 925 [13],[26]    
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock        
Schedule of Investments [Line Items]        
Fair value     $ 0 3,290
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt        
Schedule of Investments [Line Items]        
Spread (as a percent)     7.50%  
Fair value     $ 0 6,368
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt        
Schedule of Investments [Line Items]        
Fair value     $ 0 2,614
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 137 [12],[27] 137 [13],[28]    
Cost $ 134 [12],[27] $ 134 [13],[28]    
Fair value $ 111 [12],[27] $ 124 [13],[28]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.25% [12],[29],[30] 7.25% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (14) [12],[29],[30] (17) [13],[25],[26]    
Fair value $ (14) [12],[29],[30] $ (5) [13],[25],[26]    
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.06% [12],[29] 12.76% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 3,365 [12],[29] $ 3,417 [13],[26]    
Cost 3,287 [12],[29] 3,321 [13],[26]    
Fair value $ 3,365 [12],[29] $ 3,344 [13],[26]    
Investment, Identifier [Axis]: Acumera, Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12],[27] 3,311      
Cost [12],[27] $ 0      
Fair value [12],[27] $ 30      
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   7.50%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (8)    
Fair value [13],[25],[26]   $ (8)    
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.98%    
Spread (as a percent) [13],[26]   7.50%    
Principal [13],[26]   $ 11,922    
Cost [13],[26]   11,825    
Fair value [13],[26]   $ 11,922    
Investment, Identifier [Axis]: Acumera, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [13],[31]   14,953    
Cost [13],[31]   $ 0    
Fair value [13],[31]   $ 90    
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.00% [12],[29],[32] 11.00% [13],[26],[33]    
Spread (as a percent) 7.00% [12],[29],[32] 7.00% [13],[26],[33]    
PIK Rate 1.00% [12],[29],[32] 1.00% [13],[26],[33]    
Principal $ 943 [12],[29],[32] $ 936 [13],[26],[33]    
Cost 943 [12],[29],[32] 936 [13],[26],[33]    
Fair value $ 924 [12],[29],[32] $ 917 [13],[26],[33]    
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.00% [12],[29],[32] 11.00% [13],[26],[33]    
Spread (as a percent) 7.00% [12],[29],[32] 7.00% [13],[26],[33]    
PIK Rate 1.00% [12],[29],[32] 1.00% [13],[26],[33]    
Principal $ 2,322 [12],[29],[32] $ 2,531 [13],[26],[33]    
Cost 2,318 [12],[29],[32] 2,527 [13],[26],[33]    
Fair value $ 2,274 [12],[29],[32] $ 2,481 [13],[26],[33]    
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 5.00% [12],[29],[30] 5.00% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (7) [12],[29],[30] (10) [13],[25],[26]    
Fair value $ (7) [12],[29],[30] $ (10) [13],[25],[26]    
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% [12],[29] 13.50% [13],[26]    
Spread (as a percent) 5.00% [12],[29] 5.00% [13],[26]    
Principal $ 7,703 [12],[29] $ 8,188 [13],[26]    
Cost 7,669 [12],[29] 8,140 [13],[26]    
Fair value $ 7,703 [12],[29] $ 8,188 [13],[26]    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.23% [12],[29] 15.29% [13],[26]    
Spread (as a percent) 9.75% [12],[29] 9.75% [13],[26]    
PIK Rate 15.23% [12],[29] 15.29% [13],[26]    
Principal $ 5,425 [12],[29] $ 4,833 [13],[26]    
Cost 5,411 [12],[29] 4,812 [13],[26]    
Fair value $ 4,556 [12],[29] $ 4,102 [13],[26]    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 17.20% [12],[29],[34] 15.29% [13],[26]    
Spread (as a percent) 11.75% [12],[29],[34] 9.75% [13],[26]    
PIK Rate 17.20% [12],[29],[34] 15.29% [13],[26]    
Principal $ 4,270 [12],[29],[34] $ 0 [13],[26]    
Cost 4,244 [12],[29],[34] 0 [13],[26]    
Fair value 2,851 [12],[29],[34] $ 0 [13],[26]    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26],[35]   17.29%    
Spread (as a percent) [13],[26],[35]   11.75%    
PIK Rate [13],[26],[35]   17.29%    
Principal [13],[26],[35]   $ 4,270    
Cost [13],[26],[35]   4,244    
Fair value [13],[26],[35]   $ 2,522    
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[26],[35]   17.29%    
Spread (as a percent) [13],[26],[35]   11.75%    
PIK Rate [13],[26],[35]   17.29%    
Principal [13],[26],[35]   $ 0    
Cost [13],[26],[35]   0    
Fair value [13],[26],[35]   0    
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 2,425 [14],[34],[36] 2,425 [15],[35],[37]    
Cost 2,375 [14],[34],[36] 2,375 [15],[35],[37]    
Fair value 59 [14],[34],[36] 109 [15],[35],[37]    
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2        
Schedule of Investments [Line Items]        
Principal 11,693 [14],[34],[36] 11,693 [15],[35],[37]    
Cost 11,451 [14],[34],[36] 11,451 [15],[35],[37]    
Fair value $ 282 [14],[34],[36] $ 526 [15],[35],[37]    
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 607 607    
Total Rate     14.13%  
Cost $ 607 $ 607    
Fair value 1,430 1,210 $ 0 0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 800 800    
Total Rate   14.13%    
Cost $ 800 $ 800    
Fair value 0 0 $ 1,140 880
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2.1        
Schedule of Investments [Line Items]        
Fair value 1,430 $ 1,210    
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   15.38% [26] 15.38%  
Spread (as a percent)   10.00% [26] 10.00%  
Principal 0 [30] $ 55 [26]    
Cost 0 [30] 54 [26]    
Fair value $ 0 [30] $ 54 [26] $ 39 (2)
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.75% 15.38% [26] 15.38%  
Spread (as a percent)   10.00% [26] 10.00%  
Principal $ 1,036 $ 1,031 [26]    
Cost 1,024 1,020 [26]    
Fair value $ 1,024 $ 1,020 [26] $ 1,033 1,135
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 105 [23] 105 [24]    
Cost $ 79 [23] $ 79 [24]    
Fair value $ 0 [23] $ 0 [24] 0 0
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.88%      
Spread (as a percent) [12],[29] 6.75%      
Principal [12],[29] $ 195      
Cost [12],[29] 148      
Fair value [12],[29] $ 148      
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 12.08%      
Spread (as a percent) [12],[29] 6.75%      
Principal [12],[29] $ 18,049      
Cost [12],[29] 17,597      
Fair value [12],[29] $ 17,597      
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,070 [12] 2,070 [13]    
Cost $ 124 [12] $ 124 [13]    
Fair value $ 0 [12] $ 0 [13]    
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 17,265 [12] 17,265 [13]    
Cost $ 7,468 [12] $ 7,468 [13]    
Fair value $ 6,667 [12] $ 7,468 [13]    
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 17,265 [12] 17,265 [13]    
Cost $ 0 [12] $ 0 [13]    
Fair value $ 0 [12] $ 0 [13]    
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.00% [12] 15.00% [13]    
PIK Rate 15.00% [12] 15.00% [13]    
Principal $ 2,106 [12] $ 1,007 [13]    
Cost 2,106 [12] 1,007 [13]    
Fair value $ 2,106 [12] $ 1,007 [13]    
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.76% [12],[29] 12.04% [13],[26]    
Spread (as a percent) 6.50% [12],[29] 6.50% [13],[26]    
PIK Rate 11.76% [12],[29] 12.04% [13],[26]    
Principal $ 4,157 [12],[29] $ 3,765 [13],[26]    
Cost 4,157 [12],[29] 3,765 [13],[26]    
Fair value $ 4,157 [12],[29] $ 3,765 [13],[26]    
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 62,403 [12] 62,402 [13]    
Cost $ 62 [12] $ 62 [13]    
Fair value $ 100 [12] $ 100 [13]    
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12] 1,000,000      
Cost [12] $ 1,000      
Fair value [12] $ 1,550      
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29],[38] 11.22%      
Spread (as a percent) [12],[29],[38] 6.00%      
Principal [12],[29],[38] $ 771      
Cost [12],[29],[38] 748      
Fair value [12],[29],[38] $ 771      
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.00%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (11)      
Fair value [12],[29],[30] $ (11)      
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.35%      
Spread (as a percent) [12],[29] 6.00%      
Principal [12],[29] $ 11,288      
Cost [12],[29] 11,091      
Fair value [12],[29] $ 11,288      
Investment, Identifier [Axis]: Barfly Ventures, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 12 [12] 12 [13]    
Cost $ 528 [12] $ 528 [13]    
Fair value $ 1,787 [12] $ 1,380 [13] 1,013 1,107
Investment, Identifier [Axis]: Batjer TopCo, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 453 [27] 453 [28]    
Cost $ 455 [27] $ 455 [28]    
Fair value $ 570 [27] 680 [28] 680 455
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
Principal $ 50 0 [25]    
Cost 49 (1) [25]    
Fair value $ 49 $ 0 [25] $ 0 (1)
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 30 $ 30    
Cost 30 30    
Fair value $ 30 $ 30 $ 70 0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 1,175 $ 1,175    
Cost 1,164 1,160    
Fair value $ 1,164 $ 1,175 $ 1,175 1,205
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 286,109 [12] 122,416 [13],[39]    
Cost $ 286 [12] $ 0 [13],[39]    
Fair value $ 0 [12] $ 200 [13],[39]    
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 122,416 [12],[40] 1,548,387 [13],[28],[39]    
Cost $ 0 [12],[40] $ 0 [13],[28],[39]    
Fair value $ 0 [12],[40] $ 2,560 [13],[28],[39]    
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) [12],[40] 1,548,387      
Cost [12],[40] $ 0      
Fair value [12],[40] $ 0      
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 10.25% [12],[29],[30] 7.25% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (15) [12],[29],[30] (18) [13],[25],[26]    
Fair value $ (15) [12],[29],[30] $ (18) [13],[25],[26]    
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.31% [12],[29] 12.64% [13],[26]    
Spread (as a percent) 10.25% [12],[29] 7.25% [13],[26]    
PIK Rate 9.25% [12],[29] 6.25% [13],[26]    
Principal $ 9,035 [12],[29] $ 8,535 [13],[26]    
Cost 8,939 [12],[29] 8,419 [13],[26]    
Fair value $ 7,544 [12],[29] $ 7,998 [13],[26]    
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,050,000 [12] 1,050,000 [13]    
Cost $ 1,050 [12] $ 1,050 [13]    
Fair value $ 580 [12] $ 120 [13]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 700,446 [14] 700,446 [15]    
Cost $ 0 [14] $ 0 [15]    
Fair value $ 0 [14] $ 533 [15]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.82% [14],[29] 16.00% [15],[26]    
Spread (as a percent) 8.50% [14],[29] 7.50% [15],[26]    
PIK Rate 12.82% [14],[29] 15.00% [15],[26]    
Principal $ 204 [14],[29] $ 2,035 [15],[26]    
Cost 99 [14],[29] 2,035 [15],[26]    
Fair value $ 187 [14],[29] $ 1,907 [15],[26]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.50% [14],[29] 13.96% [15],[26]    
Spread (as a percent) 7.50% [14],[29] 8.50% [15],[26]    
PIK Rate 15.00% [14],[29] 12.96% [15],[26]    
Principal $ 3,703 [14],[29] $ 3,941 [15],[26]    
Cost 3,703 [14],[29] 3,305 [15],[26]    
Fair value $ 3,388 [14],[29] $ 3,695 [15],[26]    
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [14],[29] 13.82%      
Spread (as a percent) [14],[29] 8.50%      
PIK Rate [14],[29] 12.82%      
Principal [14],[29] $ 4,348      
Cost [14],[29] 3,998      
Fair value [14],[29] $ 3,978      
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 175,110 [14],[23] 175,110 [15],[24]    
Cost $ 1,111 [14],[23] $ 1,111 [15],[24]    
Fair value $ 0 [14],[23] $ 129 [15],[24]    
Investment, Identifier [Axis]: Boccella Precast Products LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 540,000 [27] 540,000    
Cost $ 564 [27] $ 564    
Fair value $ 80 [27] $ 498    
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00%    
Principal $ 80 $ 80    
Cost 80 80    
Fair value $ 66 $ 80    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 360 [12],[16],[17] 360 [13],[18],[19]    
Cost $ 0 [12],[16],[17] $ 0 [13],[18],[19]    
Fair value $ 0 [12],[16],[17] $ 0 [13],[18],[19]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 360 [12],[16],[17] 360 [13],[18],[19]    
Cost $ 360 [12],[16],[17] $ 360 [13],[18],[19]    
Fair value $ 310 [12],[16],[17] $ 310 [13],[18],[19]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.00% [12],[16],[17],[29],[30] 7.00% [13],[18],[19],[25],[26]    
Principal $ 0 [12],[16],[17],[29],[30] $ 0 [13],[18],[19],[25],[26]    
Cost (13) [12],[16],[17],[29],[30] (16) [13],[18],[19],[25],[26]    
Fair value $ (13) [12],[16],[17],[29],[30] $ (16) [13],[18],[19],[25],[26]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.48% [12],[16],[17],[29] 11.54% [13],[18],[19],[26]    
Spread (as a percent) 6.00% [12],[16],[17],[29] 6.00% [13],[18],[19],[26]    
Principal $ 4,010 [12],[16],[17],[29] $ 4,040 [13],[18],[19],[26]    
Cost 3,952 [12],[16],[17],[29] 3,970 [13],[18],[19],[26]    
Fair value $ 4,010 [12],[16],[17],[29] $ 4,040 [13],[18],[19],[26]    
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.48% [12],[16],[17],[29] 13.54% [13],[18],[19],[26]    
Spread (as a percent) 8.00% [12],[16],[17],[29] 8.00% [13],[18],[19],[26]    
Principal $ 4,010 [12],[16],[17],[29] $ 4,040 [13],[18],[19],[26]    
Cost 3,952 [12],[16],[17],[29] 3,970 [13],[18],[19],[26]    
Fair value $ 4,010 [12],[16],[17],[29] $ 4,040 [13],[18],[19],[26]    
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 737 [27] 737 [28]    
Cost $ 1,070 [27] $ 1,070 [28]    
Fair value $ 1,360 [27] $ 1,400 [28] $ 1,400 1,770
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.35% [29] 15.46% [26] 15.44%  
Spread (as a percent) 10.00% [29] 10.00% [26] 10.00%  
Principal $ 1,285 [29] $ 1,375 [26]    
Cost 1,285 [29] 1,375 [26]    
Fair value $ 1,285 [29] $ 1,374 [26] $ 1,376 1,491
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund III, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 1.00% [16],[20],[41] 0.50% [18],[21],[42]    
Cost $ 1,974 [16],[20],[41] $ 2,270 [18],[21],[42]    
Fair value $ 1,156 [16],[20],[41] $ 1,360 [18],[21],[42]    
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund IV, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 1.00% [16],[20],[27],[41] 1.20% [18],[21],[28],[42]    
Cost $ 8,637 [16],[20],[27],[41] $ 8,737 [18],[21],[28],[42]    
Fair value $ 8,802 [16],[20],[27],[41] $ 8,716 [18],[21],[28],[42]    
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 4 4    
Total Rate 6.00% 6.00%    
PIK Rate 6.00% 6.00%    
Cost $ 3,040 $ 3,040    
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [37]   12.00%    
Principal [37]   $ 11,490    
Cost [37]   11,490    
Fair value [37]   $ 8,218    
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [34] 15.00%      
PIK Rate [34] 10.00%      
Principal [34] $ 13,330      
Cost [34] 13,048      
Fair value [34] $ 10,817      
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [30],[34] 15.00%      
PIK Rate [30],[34] 15.00%      
Principal [30],[34] $ 10      
Cost [30],[34] 0      
Fair value [30],[34] $ 0      
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [34],[36] 15.00%      
PIK Rate [34],[36] 15.00%      
Principal [34],[36] $ 6,131      
Cost [34],[36] 4,078      
Fair value [34],[36] $ 0      
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   10.46%    
Spread (as a percent) 5.00% [12],[29],[30] 5.00% [13],[26]    
Principal $ 0 [12],[29],[30] $ 310 [13],[26]    
Cost (9) [12],[29],[30] 296 [13],[26]    
Fair value $ 0 [12],[29],[30] $ 310 [13],[26]    
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.95% [12],[29] 10.46% [13],[26]    
Spread (as a percent) 5.00% [12],[29] 5.00% [13],[26]    
Principal $ 12,125 [12],[29] $ 13,121 [13],[26]    
Cost 12,006 [12],[29] 12,970 [13],[26]    
Fair value $ 12,125 [12],[29] $ 13,121 [13],[26]    
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 454,344 379,338    
Cost $ 454 $ 379    
Fair value $ 472 $ 379    
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 126,446 126,446    
Cost $ 0 $ 0    
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: CQ Fluency, LLC, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.75%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (35)      
Fair value [12],[29],[30] $ (35)      
Investment, Identifier [Axis]: CQ Fluency, LLC, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.75%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (35)      
Fair value [12],[29],[30] $ (35)      
Investment, Identifier [Axis]: CQ Fluency, LLC, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.49%      
Spread (as a percent) [12],[29] 6.75%      
Principal [12],[29] $ 7,313      
Cost [12],[29] 7,142      
Fair value [12],[29] $ 7,170      
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   7.00%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (44)    
Fair value [13],[25],[26]   $ (44)    
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   7.00%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (44)    
Fair value [13],[25],[26]   $ (44)    
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.45%    
Spread (as a percent) [13],[26]   7.00%    
Principal [13],[26]   $ 7,500    
Cost [13],[26]   7,280    
Fair value [13],[26]   $ 7,280    
Investment, Identifier [Axis]: Career Team Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 50,000 50,000    
Cost $ 500 $ 500    
Fair value $ 500 $ 500    
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.25% [29] 11.38% [26]    
Spread (as a percent) 6.00% [29] 6.00% [26]    
Principal $ 75 [29] $ 100 [26]    
Cost 71 [29] 96 [26]    
Fair value $ 71 [29] $ 96 [26]    
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00%    
Principal $ 2,205 $ 2,225    
Cost 2,176 2,185    
Fair value $ 2,176 $ 2,185    
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 80,000 [12] 80,000 [13]    
Cost $ 80 [12] $ 80 [13]    
Fair value $ 160 [12] $ 80 [13]    
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   6.00%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (3)    
Fair value [13],[25],[26]   $ (3)    
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.61%    
Spread (as a percent) [13],[26]   6.00%    
Principal [13],[26]   $ 2,581    
Cost [13],[26]   2,561    
Fair value [13],[26]   $ 2,581    
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.61%    
Spread (as a percent) [13],[26]   6.00%    
Principal [13],[26]   $ 1,985    
Cost [13],[26]   1,971    
Fair value [13],[26]   $ 1,985    
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [27] 368      
Cost [27] $ 404      
Fair value [27] 1,590      
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [30] 0      
Cost [30] (3)      
Fair value [30] $ 0      
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.00%      
Principal $ 2,390      
Cost 2,361      
Fair value $ 2,390      
Investment, Identifier [Axis]: Central Moloney, LLC., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.35%      
Spread (as a percent) [12],[29] 6.75%      
Principal [12],[29] $ 12,861      
Cost [12],[29] 12,639      
Fair value [12],[29] $ 12,773      
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 3,327 3,327    
Cost $ 1,531 $ 1,531    
Fair value $ 2,990 $ 2,760 $ 2,600 2,170
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 10.00% [29],[30] 9.00% [25],[26] 9.00%  
Principal $ 0 [29],[30] $ 0 [25],[26]    
Cost 0 [29],[30] 0 [25],[26]    
Fair value $ 0 [29],[30] $ 0 [25],[26] $ 0 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.35% [29] 14.48% [26] 14.48%  
Spread (as a percent) 10.00% [29] 9.00% [26] 9.00%  
Principal $ 5,116 [29] $ 4,394 [26]    
Cost 5,062 [29] 4,364 [26]    
Fair value $ 5,116 [29] 4,394 [26] $ 4,394 3,731
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2.1        
Schedule of Investments [Line Items]        
Total Rate 15.35%      
Spread (as a percent) 10.00%      
Fair value $ 5,116 0    
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 4,394    
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,087 [27] 1,087 [28]    
Cost $ 2,860 [27] $ 2,860 [28]    
Fair value $ 7,630 [27] $ 7,330 [28] 6,480 5,728
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 261,786 [27],[40] 261,786 [28],[39]    
Cost $ 443 [27],[40] $ 443 [28],[39]    
Fair value $ 805 [27],[40] $ 715 [28],[39] $ 743 678
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [29],[30] 6.00% [25],[26] 6.00%  
Principal $ 0 [29],[30] $ 0 [25],[26]    
Cost (32) [29],[30] (49) [25],[26]    
Fair value $ 0 [29],[30] $ 0 [25],[26] $ 0 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.36% [29] 13.49% [26] 13.49%  
Spread (as a percent) 8.00% [29] 8.00% [26] 8.00%  
Principal $ 3,905 [29] $ 3,905 [26]    
Cost 3,904 [29] 3,903 [26]    
Fair value $ 3,905 [29] $ 3,905 [26] $ 4,102 4,236
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.02% [12],[29],[38] 12.60% [13],[26],[43]    
Spread (as a percent) 7.00% [12],[29],[38] 7.00% [13],[26],[43]    
Principal $ 467 [12],[29],[38] $ 190 [13],[26],[43]    
Cost 455 [12],[29],[38] 175 [13],[26],[43]    
Fair value $ 437 [12],[29],[38] $ 183 [13],[26],[43]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.55% [12],[29] 12.66% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 3,334 [12],[29] $ 3,360 [13],[26]    
Cost 3,303 [12],[29] 3,317 [13],[26]    
Fair value $ 3,125 [12],[29] $ 3,224 [13],[26]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.55% [12],[29] 12.66% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 185 [12],[29] $ 186 [13],[26]    
Cost 183 [12],[29] 184 [13],[26]    
Fair value $ 173 [12],[29] $ 179 [13],[26]    
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.55% [12],[29] 12.66% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 446 [12],[29] $ 450 [13],[26]    
Cost 439 [12],[29] 440 [13],[26]    
Fair value $ 418 [12],[29] $ 432 [13],[26]    
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 457 [27] 457 [28]    
Cost $ 491 [27] $ 491 [28]    
Fair value $ 3,900 [27] $ 3,920 [28] 3,500 3,330
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 179 [27] 179 [28]    
Cost $ 1,820 [27] $ 1,820 [28]    
Fair value $ 2,210 [27] $ 1,300 [28] 1,400 2,060
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 200 [40] 200 [39]    
Cost $ 127 [40] $ 127 [39]    
Fair value 237 [40] $ 282 [39] 282 152
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   11.50%    
Principal 0 [30] $ 2,140    
Cost 0 [30] 2,140    
Fair value 0 [30] 2,103 $ 0 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1.1        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0    
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 11.50%  
Principal $ 1,790 $ 253    
Cost 1,783 251    
Fair value $ 1,783 251 $ 2,163 2,620
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2.1        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
Fair value $ 1,783 2,103    
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.00%   10.00%  
Principal $ 246      
Cost 244      
Fair value 244 251 $ 253 260
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Principal 2,685 [12],[34],[36] 2,694 [13],[35],[37]    
Cost 2,340 [12],[34],[36] 2,350 [13],[35],[37]    
Fair value $ 17 [12],[34],[36] $ 16 [13],[35],[37]    
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 39 [27] 39 [28]    
Cost $ 0 [27] $ 1,440 [28]    
Fair value $ 660 [27] $ 4,000 [28]    
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [26]   11.69%    
Spread (as a percent) [26]   6.00%    
Principal [26]   $ 1,140    
Cost [26]   1,133    
Fair value [26]   $ 1,140    
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   8.00%    
Principal   $ 4,819    
Cost   4,781    
Fair value   $ 4,819    
Investment, Identifier [Axis]: Cody Pools, Inc., Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 147 [27],[40] 147 [28],[39]    
Cost $ 2,079 [27],[40] $ 2,079 [28],[39]    
Fair value 17,490 [27],[40] 18,120 [28],[39] 17,290 14,550
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [30] 0 [25]    
Cost (3) [30] (2) [25]    
Fair value $ 0 [30] $ 0 [25] $ 0 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 12.50% 12.50%  
Principal $ 6,712 $ 7,111    
Cost 6,698 7,089    
Fair value $ 6,712 $ 7,111 $ 7,377 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Spread (as a percent)     10.50%  
Fair value     $ 0 273
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 4        
Schedule of Investments [Line Items]        
Spread (as a percent)     10.50%  
Fair value     $ 0 6,882
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [27] 4,320      
Cost [27] $ 1,920      
Fair value [27] 3,280      
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares)   240    
Cost   $ 240    
Fair value 0 $ 600 600 0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares)   4,320    
Cost   $ 1,920    
Fair value 3,280 1,920 1,920 2,290
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [30] 0 [25]    
Cost 0 [30] 0 [25]    
Fair value $ 0 [30] $ 0 [25] $ 0 0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 4,056 $ 5,513    
Cost 4,025 5,448    
Fair value $ 4,056 $ 5,407 $ 5,442 5,729
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,863 1,863    
Cost $ 1,863 $ 1,863    
Fair value 1,980 1,863    
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [30] 0 [25]    
Cost (17) [30] 0 [25]    
Fair value $ (17) [30] $ 0 [25]    
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% 13.50%    
Principal $ 4,300 $ 4,300    
Cost 4,194 4,175    
Fair value $ 4,194 $ 4,175    
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.29% [12],[29],[38] 13.52% [13],[26],[44]    
Spread (as a percent) 8.00% [12],[29],[38] 8.00% [13],[26],[44]    
Principal $ 6,250 [12],[29],[38] $ 4,167 [13],[26],[44]    
Cost 6,170 [12],[29],[38] 4,123 [13],[26],[44]    
Fair value $ 6,117 [12],[29],[38] $ 4,040 [13],[26],[44]    
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   13.52%    
Spread (as a percent) 8.00% [12],[29],[30] 8.00% [13],[26]    
Principal $ 0 [12],[29],[30] $ 15,260 [13],[26]    
Cost (49) [12],[29],[30] 15,098 [13],[26]    
Fair value $ (49) [12],[29],[30] $ 14,797 [13],[26]    
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 13.28%      
Spread (as a percent) [12],[29] 8.00%      
Principal [12],[29] $ 15,146      
Cost [12],[29] 14,970      
Fair value [12],[29] 14,823      
Investment, Identifier [Axis]: Construction Supply Investments, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [13]   861,618    
Cost 0 [12] $ 3,335 [13]    
Fair value $ 0 [12] $ 23,135 [13]    
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 39.00% [16],[20],[41] 38.80% [18],[21],[28],[42]    
Cost $ 655 [16],[20],[41] $ 693 [18],[21],[28],[42]    
Fair value $ 530 [16],[20],[41] $ 568 [18],[21],[28],[42] 588 588
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[16],[17],[29] 6.50%      
Cost [12],[16],[17],[29] $ 426      
Fair value [12],[16],[17],[29] $ 429      
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[16],[17],[29] 11.45%      
Spread (as a percent) [12],[16],[17],[29] 6.50%      
Cost [12],[16],[17],[29] $ 2,813      
Fair value [12],[16],[17],[29] $ 2,752      
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[16],[17],[29] 11.62%      
Spread (as a percent) [12],[16],[17],[29] 6.50%      
Cost [12],[16],[17],[29] $ 1,881      
Fair value [12],[16],[17],[29] $ 1,835      
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [12],[16],[17],[29] 11.70%      
Spread (as a percent) [12],[16],[17],[29] 6.75%      
Cost [12],[16],[17],[29] $ 8,449      
Fair value [12],[16],[17],[29] $ 8,448      
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 5.75%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (29)      
Fair value [12],[29],[30] $ (29)      
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 10.35%      
Spread (as a percent) [12],[29] 5.75%      
Principal [12],[29] $ 10,869      
Cost [12],[29] 10,666      
Fair value [12],[29] $ 10,733      
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares)   1,486    
Cost   $ 1,486    
Fair value   $ 1,920    
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,486      
Cost $ 1,486      
Fair value $ 1,486      
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) [27] 767      
Total Rate [27] 15.00%      
PIK Rate [27] 15.00%      
Cost [27] $ 781      
Fair value [27] $ 781      
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   12.00%    
Principal   $ 4,700    
Cost   4,642    
Fair value   $ 4,700    
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
Principal $ 140      
Cost 137      
Fair value $ 137      
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00%      
Principal $ 4,200      
Cost 4,159      
Fair value $ 4,159      
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 776,316 [12] 776,316 [13]    
Total Rate 8.00% [12] 8.00% [13]    
PIK Rate 8.00% [12] 8.00% [13]    
Cost $ 776 [12] $ 776 [13]    
Fair value $ 0 [12] $ 260 [13]    
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)        
Schedule of Investments [Line Items]        
Total Rate 10.00% [12],[27] 10.00% [13],[28]    
PIK Rate 10.00% [12],[27] 10.00% [13],[28]    
Cost $ 1,316 [12],[27] $ 1,284 [13],[28]    
Fair value $ 681 [12],[27] $ 1,283 [13],[28]    
Investment, Identifier [Axis]: Dalton US Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 37 [12] 37 [13]    
Cost $ 52 [12] $ 52 [13]    
Fair value $ 60 [12] $ 60 [13]    
Investment, Identifier [Axis]: Datacom, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 1,000 1,000    
Cost $ 290 $ 290    
Fair value $ 40 $ 10 $ 30 300
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 7.50% 7.50% 7.50%  
Principal $ 40 $ 50    
Cost 39 49    
Fair value $ 39 $ 49 $ 59 25
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 906 $ 928    
Cost 881 887    
Fair value $ 845 $ 844 $ 846 865
Investment, Identifier [Axis]: Digital Products Holdings LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 964 [27] 964 [28]    
Cost $ 2,375 [27] $ 2,375 [28]    
Fair value $ 2,459 [27] $ 2,459 [28] $ 2,459 2,459
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 15.25% [29] 15.38% [26] 15.38%  
Spread (as a percent) 10.00% [29] 10.00% [26] 10.00%  
Principal $ 3,237 [29] $ 3,718 [26]    
Cost 3,220 [29] 3,689 [26]    
Fair value $ 3,203 [29] $ 3,673 [26] $ 3,669 3,878
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 2,100 2,100 [28]    
Cost $ 2,100 $ 2,100 [28]    
Fair value 4,820 $ 5,180 [28] $ 5,340 5,558
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   14.00% 14.00%  
Principal 0 [30] $ 217    
Cost (2) [30] 213    
Fair value $ 0 [30] $ 217 $ 225 0
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.00% 14.00% 14.00%  
Principal $ 4,751 $ 5,002    
Cost 4,735 4,974    
Fair value $ 4,751 $ 5,002 $ 5,085 5,352
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,250,000 [12] 1,250,000 [13]    
Cost $ 0 [12] $ 0 [13]    
Fair value $ 0 [12] $ 0 [13]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1        
Schedule of Investments [Line Items]        
Units (in shares) 125,000 [12] 125,000 [13]    
Cost $ 128 [12] $ 128 [13]    
Fair value $ 60 [12] $ 60 [13]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2        
Schedule of Investments [Line Items]        
Units (in shares) 2,376,241 [12] 2,376,241 [13]    
Cost $ 0 [12] $ 0 [13]    
Fair value $ 0 [12] $ 0 [13]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.45% [12],[29] 10.45% [13],[26]    
Spread (as a percent) 6.50% [12],[29] 5.00% [13],[26]    
PIK Rate 11.45% [12],[29] 10.45% [13],[26]    
Principal $ 2,253 [12],[29] $ 2,070 [13],[26]    
Cost 2,094 [12],[29] 1,912 [13],[26]    
Fair value $ 2,155 [12],[29] $ 1,912 [13],[26]    
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.45% [12],[29] 12.45% [13],[26]    
Spread (as a percent) 8.50% [12],[29] 7.00% [13],[26]    
PIK Rate 13.45% [12],[29] 12.45% [13],[26]    
Principal $ 2,333 [12],[29] $ 2,113 [13],[26]    
Cost 2,100 [12],[29] 1,879 [13],[26]    
Fair value $ 2,139 [12],[29] $ 1,859 [13],[26]    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 19 19    
Cost $ 374 $ 374    
Fair value $ 370 $ 390    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 61 [40] 61 [39]    
Cost $ 102 [40] $ 102 [39]    
Fair value $ 196 [40] $ 109 [39]    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [29],[30] 6.00% [25],[26]    
Principal $ 0 [29],[30] $ 0 [25],[26]    
Cost 0 [29],[30] 0 [25],[26]    
Fair value $ 0 [29],[30] $ 0 [25],[26]    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00%    
Principal $ 1,181 $ 1,227    
Cost 1,160 1,200    
Fair value $ 1,160 $ 1,200    
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.00% 9.00%    
Principal $ 410 $ 412    
Cost 406 409    
Fair value $ 406 $ 409    
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.20% [14],[29] 11.79% [15],[26]    
Spread (as a percent) 6.25% [14],[29] 6.25% [15],[26]    
Principal $ 2,359 [14],[29] $ 2,391 [15],[26]    
Cost 2,332 [14],[29] 2,357 [15],[26]    
Fair value $ 1,935 [14],[29] $ 2,175 [15],[26]    
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   5.50%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (11)    
Fair value [13],[25],[26]   $ 0    
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.98%    
Spread (as a percent) [13],[26]   6.50%    
Principal [13],[26]   $ 5,095    
Cost [13],[26]   5,023    
Fair value [13],[26]   $ 5,095    
Investment, Identifier [Axis]: Escalent, Inc., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 170,998 [12] 170,998 [13]    
Cost $ 174 [12] $ 174 [13]    
Fair value $ 240 [12] $ 190 [13]    
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 8.00% [12],[29],[30] 8.00% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (8) [12],[29],[30] (9) [13],[25],[26]    
Fair value $ (8) [12],[29],[30] $ (9) [13],[25],[26]    
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.70% [12],[29] 13.45% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 8.00% [13],[26]    
Principal $ 6,872 [12],[29] $ 6,924 [13],[26]    
Cost 6,716 [12],[29] 6,742 [13],[26]    
Fair value $ 6,872 [12],[29] $ 6,924 [13],[26]    
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.87% [12],[29] 12.61% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 7.00% [13],[26]    
Principal $ 308 [12],[29] $ 308 [13],[26]    
Cost 306 [12],[29] 306 [13],[26]    
Fair value $ 308 [12],[29] $ 302 [13],[26]    
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.87% [12],[29] 12.61% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 7.00% [13],[26]    
PIK Rate [12],[29] 8.00%      
Principal $ 3,909 [12],[29] $ 3,681 [13],[26]    
Cost 3,893 [12],[29] 3,659 [13],[26]    
Fair value $ 3,909 [12],[29] $ 3,614 [13],[26]    
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 8,200      
Cost 7,074      
Fair value $ 7,074      
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [23] 3      
Principal [23] $ 980      
Cost [23] 980      
Fair value [23] $ 980      
Investment, Identifier [Axis]: Fidelity Government Portfolio Class III Fund        
Schedule of Investments [Line Items]        
Total Rate   5.25%    
Cost [45]   $ 3,188    
Fair value [45]   $ 3,188    
Investment, Identifier [Axis]: First American Treasury Obligations Fund Class Z        
Schedule of Investments [Line Items]        
Total Rate 4.97% 5.23%    
Cost $ 10,798 [46] $ 17,656 [47]    
Fair value $ 10,798 [46] $ 17,656 [47]    
Investment, Identifier [Axis]: Flame King Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 2,340 [27] 2,340 [28]    
Cost $ 2,600 [27] $ 2,600 [28]    
Fair value $ 8,940 [27] $ 6,970 [28] $ 6,970 4,400
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent)     6.50%  
Fair value     $ 0 1,900
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent)     9.00%  
Fair value     $ 0 5,300
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport First Lien Loan Fund III LP)        
Schedule of Investments [Line Items]        
Units (as a percent) 6.00% [16],[20],[27],[41] 6.00% [18],[21],[28],[42]    
Cost $ 2,155 [16],[20],[27],[41] $ 4,160 [18],[21],[28],[42]    
Fair value $ 1,893 [16],[20],[27],[41] $ 3,705 [18],[21],[28],[42] 4,873 5,848
Investment, Identifier [Axis]: GFG Group, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 56 [27] 56 [28]    
Cost $ 1,225 [27] $ 1,225 [28]    
Fair value $ 2,640 [27] $ 2,870 [28] $ 2,600 1,790
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 8.00% 8.00% 8.00%  
Principal $ 2,046 $ 2,336    
Cost 2,027 2,304    
Fair value $ 2,046 $ 2,336 $ 2,636 2,836
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,896 [27] 2,896    
Cost $ 6,435 [27] $ 6,435    
Fair value $ 21,890 [27] $ 21,890 $ 21,890 21,890
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.35% 11.48% 11.48%  
Spread (as a percent) 6.00% 6.00% 6.00%  
Principal $ 1,550 $ 1,182    
Cost 1,536 1,173    
Fair value $ 1,550 $ 1,182 $ 838 330
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.35% 13.48% 13.48%  
Spread (as a percent) 8.00% 8.00% 8.00%  
Principal $ 19,944 $ 19,944    
Cost 19,841 19,803    
Fair value $ 19,944 $ 19,944 $ 19,944 19,943
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 2,261 [27] 2,261 [28]    
Cost $ 4,423 [27] $ 4,423 [28]    
Fair value $ 26,840 [27] $ 24,180 [28] $ 20,400 12,720
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.00% [29],[30],[32] 7.50% [25],[26],[33] 7.50%  
Principal $ 0 [29],[30],[32] $ 0 [25],[26],[33]    
Cost 0 [29],[30],[32] 0 [25],[26],[33]    
Fair value $ 0 [29],[30],[32] $ 0 [25],[26],[33] $ 0 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% [29],[32] 10.50% [26],[33] 10.50%  
Spread (as a percent) 7.00% [29],[32] 7.50% [26],[33] 7.50%  
Principal $ 12,120 [29],[32] $ 13,520 [26],[33]    
Cost 11,986 [29],[32] 13,336 [26],[33]    
Fair value $ 12,120 [29],[32] $ 13,520 [26],[33] $ 14,120 16,020
Investment, Identifier [Axis]: Garyline, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 210,084 210,084 [13]    
Cost $ 210 [12] $ 210 [13]    
Fair value $ 170 [12] $ 210 [13]    
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29],[38] 11.95%      
Spread (as a percent) 6.75% [12],[29],[38] 6.75% [13],[25],[26]    
Principal $ 1,786 [12],[29],[38] $ 0 [13],[25],[26]    
Cost 1,721 [12],[29],[38] (76) [13],[25],[26]    
Fair value $ 1,755 [12],[29],[38] $ (76) [13],[25],[26]    
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.95% [12],[29] 12.22% [13],[26]    
Spread (as a percent) 6.75% [12],[29] 6.75% [13],[26]    
Principal $ 9,616 [12],[29] $ 9,664 [13],[26]    
Cost 9,379 [12],[29] 9,384 [13],[26]    
Fair value $ 9,448 [12],[29] 9,384 [13],[26]    
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]        
Total Rate 12.50%      
PIK Rate 12.50%      
Fair value $ 351 $ 571    
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 920 920    
Cost $ 920 $ 920    
Fair value $ 0 $ 0 0 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 15,930 15,930    
Cost $ 1,400 $ 1,400    
Fair value $ 0 $ 620 $ 700 950
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 9.50% [29],[30],[34] 9.50% [25],[26] 9.50%  
Principal $ 0 [29],[30],[34] $ 0 [25],[26]    
Cost 0 [29],[30],[34] 0 [25],[26]    
Fair value $ 0 [29],[30],[34] $ 0 [25],[26] $ 0 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% [34] 12.50% 12.50%  
PIK Rate [34] 12.50%      
Principal $ 600 [34] $ 600    
Cost 600 [34] 600    
Fair value $ 351 [34] $ 571 $ 571 571
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12] 35,971      
Cost [12] $ 0      
Fair value [12] $ 0      
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 8.75% [12],[29] 14.34% [13],[26],[37]    
Spread (as a percent) 3.50% [12],[29] 9.50% [13],[26],[37]    
PIK Rate 2.50% [12],[29] 14.34% [13],[26],[37]    
Principal $ 1,353 [12],[29] $ 205 [13],[26],[37]    
Cost 1,289 [12],[29] 205 [13],[26],[37]    
Fair value $ 1,289 [12],[29] $ 186 [13],[26],[37]    
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 2.50% [12],[34] 14.34% [13],[26],[37]    
Spread (as a percent) [13],[26],[37]   9.50%    
PIK Rate 2.50% [12],[34] 14.34% [13],[26],[37]    
Principal $ 914 [12],[34] $ 2,036 [13],[26],[37]    
Cost 401 [12],[34] 2,036 [13],[26],[37]    
Fair value $ 359 [12],[34] $ 1,849 [13],[26],[37]    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.50%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (18)      
Fair value [12],[29],[30] $ (18)      
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.35%      
Spread (as a percent) [12],[29] 6.50%      
Principal [12],[29] $ 2,388      
Cost [12],[29] 2,367      
Fair value [12],[29] $ 2,388      
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.50% [12],[29],[30] 6.50% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (11) [12],[29],[30] (14) [13],[25],[26]    
Fair value $ (11) [12],[29],[30] $ (14) [13],[25],[26]    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.35% [12],[29] 11.86% [13],[26]    
Spread (as a percent) 6.50% [12],[29] 6.50% [13],[26]    
Principal $ 1,980 [12],[29] $ 1,995 [13],[26]    
Cost 1,954 [12],[29] 1,962 [13],[26]    
Fair value $ 1,980 [12],[29] $ 1,995 [13],[26]    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.86%    
Spread (as a percent) [13],[26]   6.50%    
Principal [13],[26]   $ 4,925    
Cost [13],[26]   4,854    
Fair value [13],[26]   4,925    
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.35%      
Spread (as a percent) [12],[29] 6.50%      
Principal [12],[29] $ 4,888      
Cost [12],[29] 4,832      
Fair value [12],[29] 4,887      
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)        
Schedule of Investments [Line Items]        
Fair value $ 4,472 $ 4,225 4,106 4,331
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 MH, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 49.00% [16],[20],[27],[41] 49.30% [18],[21],[28],[42]    
Cost $ 3,345 [16],[20],[27],[41] $ 3,345 [18],[21],[28],[42]    
Fair value $ 8,819 [16],[20],[27],[41] $ 6,050 [18],[21],[28],[42] 5,896 7,552
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 3, L.P.)        
Schedule of Investments [Line Items]        
Units (as a percent) 8.00% [16],[20],[27],[41] 8.20% [18],[21],[42]    
Cost $ 2,296 [16],[20],[27],[41] $ 2,296 [18],[21],[42]    
Fair value $ 4,472 [16],[20],[27],[41] $ 4,225 [18],[21],[42]    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 56 [27] 56    
Cost $ 713 [27] $ 713    
Fair value $ 4,750 [27] $ 4,370    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 56 [40] 56 [39]    
Cost $ 38 [40] $ 38 [39]    
Fair value $ 250 [40] $ 230 [39]    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.35% [29] 11.65% [26]    
Spread (as a percent) 6.00% [29] 6.00% [26]    
Principal $ 640 [29] $ 494 [26]    
Cost 639 [29] 492 [26]    
Fair value $ 640 [29] $ 494 [26]    
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% 12.50%    
Principal $ 9,744 $ 9,744    
Cost 9,715 9,697    
Fair value $ 9,744 $ 9,744    
Investment, Identifier [Axis]: Hornblower Sub, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 5.50%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (24)      
Fair value [12],[29],[30] $ (24)      
Investment, Identifier [Axis]: Hornblower Sub, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 10.82%      
Spread (as a percent) [12],[29] 5.50%      
Principal [12],[29] $ 15,529      
Cost [12],[29] 15,368      
Fair value [12],[29] $ 15,368      
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.84% [12],[29] 15.91% [13],[26]    
Spread (as a percent) 8.25% [12],[29] 8.25% [13],[26]    
PIK Rate [13],[26]   2.00%    
Principal $ 8,000 [12],[29] $ 7,964 [13],[26]    
Cost 7,847 [12],[29] 7,813 [13],[26]    
Fair value $ 8,000 [12],[29] $ 7,313 [13],[26]    
Investment, Identifier [Axis]: IG Investor, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,600 3,600    
Cost $ 3,600 $ 3,600    
Fair value $ 3,720 3,600 3,600 0
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 400 0 [25]    
Cost 378 (27) [25]    
Fair value $ 378 $ (27) [25] $ (28) 0
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00% 13.00%  
Principal $ 8,986 $ 9,316    
Cost 8,787 9,069    
Fair value $ 8,787 $ 9,069 $ 9,162 0
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [14],[29] 10.95%      
Spread (as a percent) 5.75% [14],[29] 5.75% [15],[25],[26]    
Principal $ 306 [14],[29] $ 0 [15],[25],[26]    
Cost 297 [14],[29] (13) [15],[25],[26]    
Fair value $ 306 [14],[29] $ 0 [15],[25],[26]    
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.70% [14],[29] 10.96% [15],[26]    
Spread (as a percent) 5.75% [14],[29] 5.50% [15],[26]    
Principal $ 6,154 [14],[29] $ 6,266 [15],[26]    
Cost 6,101 [14],[29] 6,200 [15],[26]    
Fair value $ 6,154 [14],[29] $ 6,266 [15],[26]    
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.70% [14],[29] 10.96% [15],[26]    
Spread (as a percent) 5.75% [14],[29] 5.50% [15],[26]    
Principal $ 1,927 [14],[29] $ 1,942 [15],[26]    
Cost 1,910 [14],[29] 1,921 [15],[26]    
Fair value $ 1,927 [14],[29] $ 1,942 [15],[26]    
Investment, Identifier [Axis]: INW Manufacturing, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.62% [14],[29] 11.36% [15],[26]    
Spread (as a percent) 5.75% [14],[29] 5.75% [15],[26]    
Principal $ 6,375 [14],[29] $ 6,656 [15],[26]    
Cost 6,283 [14],[29] 6,537 [15],[26]    
Fair value $ 5,355 [14],[29] $ 5,325 [15],[26]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.53% [29] 16.59% [26]    
Spread (as a percent) 9.00% [29] 9.00% [26]    
PIK Rate 1.00% [29] 2.00% [26]    
Principal $ 299 [29] $ 207 [26]    
Cost 294 [29] 201 [26]    
Fair value $ 294 [29] $ 201 [26]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.53% [29] 16.59% [26]    
Spread (as a percent) 9.00% [29] 9.00% [26]    
PIK Rate 1.00% [29] 2.00% [26]    
Principal $ 252 [29] $ 178 [26]    
Cost 248 [29] 174 [26]    
Fair value $ 248 [29] $ 174 [26]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 14.53% [29] 15.59% [26]    
Spread (as a percent) 8.00% [29] 8.00% [26]    
PIK Rate 1.00% [29] 2.00% [26]    
Principal $ 1,105 [29] $ 1,084 [26]    
Cost 915 [29] 842 [26]    
Fair value $ 915 [29] $ 842 [26]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 16.53% [29] 17.59% [26]    
Spread (as a percent) 10.00% [29] 10.00% [26]    
PIK Rate 1.00% [29] 2.00% [26]    
Principal $ 1,105 [29] $ 1,091 [26]    
Cost 915 [29] 848 [26]    
Fair value $ 915 [29] $ 848 [26]    
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) 48,327 [23] 48,327 [24]    
Cost $ 523 [23] $ 523 [24]    
Fair value $ 820 [23] $ 523 [24]    
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 422 [12] 422 [13]    
Cost $ 580 [12] $ 580 [13]    
Fair value $ 540 [12] $ 550 [13]    
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.08% [12],[29],[38] 12.41% [13],[26],[48]    
Spread (as a percent) 7.00% [12],[29],[38] 7.00% [13],[26],[48]    
Principal $ 593 [12],[29],[38] $ 791 [13],[26],[48]    
Cost 593 [12],[29],[38] 791 [13],[26],[48]    
Fair value $ 593 [12],[29],[38] $ 786 [13],[26],[48]    
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.62% [12],[29] 12.45% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 10,306 [12],[29] $ 10,384 [13],[26]    
Cost 10,042 [12],[29] 10,068 [13],[26]    
Fair value $ 10,306 [12],[29] $ 10,318 [13],[26]    
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.01% [12],[29] 14.25% [13],[26]    
Spread (as a percent) 9.25% [12],[29] 7.75% [13],[26]    
PIK Rate 1.50% [12],[29] 1.00% [13],[26]    
Principal $ 17,043 [12],[29] $ 17,012 [13],[26]    
Cost 17,043 [12],[29] 17,010 [13],[26]    
Fair value $ 15,988 [12],[29] $ 15,816 [13],[26]    
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 6,436,566 [12] 6,436,566 [13]    
Cost $ 6,540 [12] $ 6,540 [13]    
Fair value $ 7,290 [12] $ 6,320 [13] 6,260 0
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [13],[39]   2,100    
Cost [13],[39]   $ 2,100    
Fair value [13],[39]   $ 1,610    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) [13],[28],[39]   336    
Total Rate [13],[28],[39]   10.00%    
PIK Rate [13],[28],[39]   10.00%    
Cost [13],[28],[39]   $ 321    
Fair value [13],[28],[39]   $ 415    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) [13],[28],[39]   187    
Total Rate [13],[28],[39]   20.00%    
PIK Rate [13],[28],[39]   20.00%    
Cost [13],[28],[39]   $ 240    
Fair value [13],[28],[39]   $ 279    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[26],[49]   12.22%    
Spread (as a percent) [13],[26],[49]   6.75%    
Principal [13],[26],[49]   $ 752    
Cost [13],[26],[49]   734    
Fair value [13],[26],[49]   $ 752    
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.22%    
Spread (as a percent) [13],[26]   6.75%    
Principal [13],[26]   $ 11,436    
Cost [13],[26]   11,330    
Fair value [13],[26]   $ 11,436    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 21,840 [27] 20,000    
Cost $ 1,092 [27] $ 1,000    
Fair value $ 1,730 [27] $ 1,000    
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 13.00%    
Principal $ 3,819 $ 4,388    
Cost 3,766 4,314    
Fair value $ 3,766 $ 4,314    
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.21%    
Spread (as a percent) [13],[26]   5.75%    
Principal [13],[26]   $ 1,881    
Cost [13],[26]   1,829    
Fair value [13],[26]   $ 1,881    
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.21%    
Spread (as a percent) [13],[26]   5.75%    
Principal [13],[26]   $ 9,690    
Cost [13],[26]   9,579    
Fair value [13],[26]   $ 9,690    
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 47,847 [12] 47,847 [13]    
Cost $ 239 [12] $ 239 [13]    
Fair value $ 130 [12] $ 239 [13]    
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.25% [12],[29],[30] 6.25% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (34) [12],[29],[30] (40) [13],[25],[26]    
Fair value $ (34) [12],[29],[30] $ (40) [13],[25],[26]    
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.25% [12],[29],[30] 6.25% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (29) [12],[29],[30] (33) [13],[25],[26]    
Fair value $ (29) [12],[29],[30] $ (33) [13],[25],[26]    
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.53% [12],[29] 11.65% [13],[26]    
Spread (as a percent) 6.25% [12],[29] 6.25% [13],[26]    
Principal $ 8,310 [12],[29] $ 8,373 [13],[26]    
Cost 8,111 [12],[29] 8,143 [13],[26]    
Fair value $ 7,880 [12],[29] $ 8,287 [13],[26]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 101,719 [12] 101,719 [13]    
Cost $ 322 [12] $ 322 [13]    
Fair value $ 10 [12] $ 190 [13]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.03% [12],[29],[38] 13.53% [13],[26],[50]    
Spread (as a percent) 8.00% [12],[29],[38] 8.00% [13],[26],[50]    
Principal $ 676 [12],[29],[38] $ 676 [13],[26],[50]    
Cost 662 [12],[29],[38] 659 [13],[26],[50]    
Fair value $ 609 [12],[29],[38] $ 664 [13],[26],[50]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.27% [12],[29] 13.55% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 8.00% [13],[26]    
Principal $ 6,209 [12],[29] $ 6,256 [13],[26]    
Cost 6,093 [12],[29] 6,115 [13],[26]    
Fair value $ 5,591 [12],[29] $ 6,144 [13],[26]    
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.27% [12],[29] 13.55% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 8.00% [13],[26]    
Principal $ 1,250 [12],[29] $ 1,260 [13],[26]    
Cost 1,227 [12],[29] 1,231 [13],[26]    
Fair value $ 1,126 [12],[29] $ 1,237 [13],[26]    
Investment, Identifier [Axis]: Integral Energy Services, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 11,647 [12] 11,647 [13]    
Cost $ 1,584 [12] $ 1,584 [13]    
Fair value $ 640 [12] $ 190 [13] $ 330 1,490
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,725 [12],[27] 3,725 [13]    
Total Rate 10.00% [12],[27] 10.00% [13]    
PIK Rate 10.00% [12],[27] 10.00% [13]    
Cost $ 290 [12],[27] $ 265 [13]    
Fair value $ 527 [12],[27] $ 350 [13]    
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.09% [12],[29] 13.16% [13],[26] 13.01%  
Spread (as a percent) 7.50% [12],[29] 7.50% [13],[26] 7.50%  
Principal $ 15,090 [12],[29] $ 16,925 [13],[26]    
Cost 14,971 [12],[29] 16,737 [13],[26]    
Fair value $ 14,739 [12],[29] $ 16,232 [13],[26] $ 17,607 18,425
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 2,143 [12] 2,143 [13]    
Cost $ 0 [12] $ 0 [13]    
Fair value $ 0 [12] $ 0 [13]    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 15.06% [12],[36],[38] 15.48% [13],[37],[51]    
Spread (as a percent) 10.00% [12],[36],[38] 10.00% [13],[37],[51]    
PIK Rate [12],[36],[38] 15.22%      
Principal $ 1,998 [12],[36],[38] $ 1,835 [13],[37],[51]    
Cost 1,998 [12],[36],[38] 1,835 [13],[37],[51]    
Fair value $ 1,842 [12],[36],[38] $ 1,781 [13],[37],[51]    
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.35% [12],[29],[34],[36] 12.46% [13],[26],[35],[37]    
Spread (as a percent) 7.00% [12],[29],[34],[36] 7.00% [13],[26],[35],[37]    
PIK Rate 12.35% [12],[29],[34],[36] 12.46% [13],[26],[35],[37]    
Principal $ 7,334 [12],[29],[34],[36] $ 7,334 [13],[26],[35],[37]    
Cost 7,254 [12],[29],[34],[36] 7,254 [13],[26],[35],[37]    
Fair value $ 11 [12],[29],[34],[36] $ 433 [13],[26],[35],[37]    
Investment, Identifier [Axis]: Intermedia Holdings, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.47%    
Spread (as a percent) [15],[26]   6.00%    
Principal [15],[26]   $ 5,544    
Cost [15],[26]   5,539    
Fair value [15],[26]   $ 5,370    
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.29% [12],[29],[38] 12.00% [13],[26]    
Spread (as a percent) 6.50% [12],[29],[38] 6.50% [13],[26]    
Principal $ 1,037 [12],[29],[38] $ 519 [13],[26]    
Cost 1,036 [12],[29],[38] 516 [13],[26]    
Fair value $ 991 [12],[29],[38] $ 509 [13],[26]    
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.25% [12],[29] 12.00% [13],[26]    
Spread (as a percent) 6.50% [12],[29] 6.50% [13],[26]    
Principal $ 16,812 [12],[29] $ 16,812 [13],[26]    
Cost 16,779 [12],[29] 16,751 [13],[26]    
Fair value $ 16,070 [12],[29] $ 16,515 [13],[26]    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 735      
Cost 724      
Fair value $ 724      
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 13.00%      
Principal $ 4,406      
Cost 4,339      
Fair value $ 4,339      
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 50,753 50,753    
Cost $ 689 $ 689    
Fair value $ 710 $ 670    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 177,800      
Total Rate 25.00%      
PIK Rate 25.00%      
Cost $ 178      
Fair value $ 190      
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.50%    
Principal $ 1,128 $ 1,128    
Cost 1,112 1,108    
Fair value $ 1,112 $ 1,108    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   13.50%    
Principal   $ 735    
Cost   722    
Fair value   $ 722    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.50%    
Principal $ 2,236 $ 2,236    
Cost 2,236 2,236    
Fair value $ 2,236 $ 2,236    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate   13.50%    
Principal   $ 4,906    
Cost   4,815    
Fair value   $ 4,815    
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.50%    
Principal $ 2,521 $ 2,641    
Cost 2,431 2,525    
Fair value $ 2,431 $ 2,525    
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 186,322 [14] 186,322 [15]    
Cost $ 0 [14] $ 0 [15]    
Fair value $ 0 [14] $ 0 [15]    
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 11.89% [14],[29] 11.04% [15],[26]    
Spread (as a percent) 6.60% [14],[29] 5.50% [15],[26]    
PIK Rate 9.43% [14],[29] 8.54% [15],[26]    
Principal $ 2,897 [14],[29] $ 2,615 [15],[26]    
Cost 2,700 [14],[29] 2,374 [15],[26]    
Fair value $ 797 [14],[29] $ 2,301 [15],[26]    
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.50%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (6)      
Fair value [12],[29],[30] $ (6)      
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.09%      
Spread (as a percent) [12],[29] 5.50%      
Principal [12],[29] $ 1,735      
Cost [12],[29] 1,706      
Fair value [12],[29] $ 1,686      
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 12.09%      
Spread (as a percent) [12],[29] 6.50%      
Principal [12],[29] $ 1,735      
Cost [12],[29] 1,706      
Fair value [12],[29] $ 1,686      
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 13.09%      
Spread (as a percent) [12],[29] 7.50%      
Principal [12],[29] $ 1,735      
Cost [12],[29] 1,706      
Fair value [12],[29] $ 1,686      
Investment, Identifier [Axis]: JDC Power Services, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.75%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (49)      
Fair value [12],[29],[30] $ (49)      
Investment, Identifier [Axis]: JDC Power Services, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.35%      
Spread (as a percent) [12],[29] 6.75%      
Principal [12],[29] $ 17,783      
Cost [12],[29] 17,367      
Fair value [12],[29] $ 17,076      
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 140,351 [12] 140,351 [13]    
Cost $ 140 [12] $ 140 [13]    
Fair value $ 20 [12] $ 140 [13]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.37% [12],[29],[38] 11.64% [13],[26],[52]    
Spread (as a percent) 8.00% [12],[29],[38] 6.00% [13],[26],[52]    
Principal $ 702 [12],[29],[38] $ 261 [13],[26],[52]    
Cost 695 [12],[29],[38] 253 [13],[26],[52]    
Fair value $ 664 [12],[29],[38] $ 261 [13],[26],[52]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.85% [12],[29] 11.61% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 6.00% [13],[26]    
Principal $ 2,980 [12],[29] $ 3,000 [13],[26]    
Cost 2,953 [12],[29] 2,963 [13],[26]    
Fair value $ 2,820 [12],[29] $ 3,000 [13],[26]    
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 12.85%      
Spread (as a percent) [12],[29] 8.00%      
Principal [12],[29] $ 279      
Cost [12],[29] 272      
Fair value [12],[29] $ 264      
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 5,653,333 [12] 5,653,333 [13]    
Cost $ 216 [12] $ 216 [13]    
Fair value $ 1,740 [12] $ 2,190 [13]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.86% [12],[29],[53] 12.46% [13],[26],[54]    
Spread (as a percent) 7.50% [12],[29],[53] 7.00% [13],[26],[54]    
Principal $ 1,607 [12],[29],[53] $ 1,675 [13],[26],[54]    
Cost 1,604 [12],[29],[53] 1,649 [13],[26],[54]    
Fair value $ 1,607 [12],[29],[53] $ 1,675 [13],[26],[54]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 15.28% [12],[29] 12.46% [13],[26]    
Spread (as a percent) 10.00% [12],[29] 7.00% [13],[26]    
Principal $ 1,251 [12],[29] $ 3,948 [13],[26]    
Cost 1,244 [12],[29] 3,948 [13],[26]    
Fair value $ 1,251 [12],[29] $ 3,948 [13],[26]    
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 12.90%      
Spread (as a percent) [12],[29] 7.50%      
Principal [12],[29] $ 3,738      
Cost [12],[29] 3,738      
Fair value [12],[29] $ 3,738      
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) [15]   392,514    
Cost [15]   $ 3,678    
Fair value [15]   $ 0    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) [14] 392,514      
Cost [14] $ 3,678      
Fair value [14] $ 0      
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) [14] 4,535,784      
Cost [14] $ 166      
Fair value [14] $ 166      
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 21.59% [14],[29],[34] 23.63% [15],[26],[35]    
Spread (as a percent) 16.00% [14],[29],[34] 18.00% [15],[26],[35]    
PIK Rate 21.59% [14],[29],[34] 23.63% [15],[26],[35]    
Principal $ 942 [14],[29],[34] $ 2,048 [15],[26],[35]    
Cost 942 [14],[29],[34] 2,048 [15],[26],[35]    
Fair value $ 0 [14],[29],[34] $ 1,747 [15],[26],[35]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 21.59% [14],[29],[34] 21.63% [15],[26],[35]    
Spread (as a percent) 16.00% [14],[29],[34] 16.00% [15],[26],[35]    
PIK Rate 21.59% [14],[29],[34] 21.63% [15],[26],[35]    
Principal $ 906 [14],[29],[34] $ 1,708 [15],[26],[35]    
Cost 906 [14],[29],[34] 1,701 [15],[26],[35]    
Fair value $ 0 [14],[29],[34] $ 121 [15],[26],[35]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 13.45% [14],[29] 21.63% [15],[26],[35]    
Spread (as a percent) 8.75% [14],[29] 16.00% [15],[26],[35]    
PIK Rate 6.00% [14],[29] 21.63% [15],[26],[35]    
Principal $ 1,666 [14],[29] $ 1,643 [15],[26],[35]    
Cost 1,666 [14],[29] 1,635 [15],[26],[35]    
Fair value $ 1,666 [14],[29] $ 117 [15],[26],[35]    
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [14],[29] 13.45%      
Spread (as a percent) [14],[29] 8.75%      
PIK Rate [14],[29] 13.45%      
Principal [14],[29] $ 1,055      
Cost [14],[29] 1,055      
Fair value [14],[29] $ 1,055      
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares)   368    
Cost   $ 404    
Fair value   1,070    
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal [25]   0    
Cost [25]   (4)    
Fair value [25]   $ 0    
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate   15.00%    
Principal   $ 2,690    
Cost   2,645    
Fair value   $ 2,690    
Investment, Identifier [Axis]: JorVet Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 12,214 [27] 11,934 [28]    
Cost $ 1,221 [27] $ 1,193 [28]    
Fair value $ 1,250 [27] $ 1,193 [28]    
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00%    
Principal $ 2,750 $ 2,850    
Cost 2,723 2,814    
Fair value $ 2,723 $ 2,814    
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 14.50% [12],[29],[34] 14.75% [13],[26]    
Spread (as a percent) 9.75% [12],[29],[34] 9.25% [13],[26]    
Principal $ 1,286 [12],[29],[34] $ 1,292 [13],[26]    
Cost 1,238 [12],[29],[34] 1,235 [13],[26]    
Fair value $ 967 [12],[29],[34] $ 1,180 [13],[26]    
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.50% [12],[29],[34] 14.75% [13],[26]    
Spread (as a percent) 9.75% [12],[29],[34] 9.25% [13],[26]    
Principal $ 9,262 [12],[29],[34] $ 9,310 [13],[26]    
Cost 9,175 [12],[29],[34] 9,205 [13],[26]    
Fair value $ 6,966 [12],[29],[34] $ 8,475 [13],[26]    
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 200 [27],[40] 200 [39]    
Cost $ 248 [27],[40] $ 248 [39]    
Fair value $ 623 [27],[40] $ 683 [39] 715 713
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 145 145    
Cost $ 3,060 $ 3,060    
Fair value $ 3,060 $ 2,420 $ 2,210 1,800
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 4,150 $ 4,950    
Cost 4,139 4,933    
Fair value $ 4,139 $ 4,933 $ 4,950 5,093
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.00% 9.00% 9.00%  
Principal $ 993 $ 960    
Cost 984 951    
Fair value $ 984 $ 951 $ 954 961
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.43% [12],[29] 12.71% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 601 [12],[29] $ 7,960 [13],[26]    
Cost 601 [12],[29] 7,933 [13],[26]    
Fair value $ 601 [12],[29] $ 7,960 [13],[26]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.60% [12],[29] 12.71% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 7,872 [12],[29] $ 5,246 [13],[26]    
Cost 7,798 [12],[29] 5,228 [13],[26]    
Fair value $ 7,872 [12],[29] $ 5,246 [13],[26]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.60% [12],[29] 12.71% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 5,194 [12],[29] $ 0 [13],[26]    
Cost 5,144 [12],[29] 0 [13],[26]    
Fair value $ 5,194 [12],[29] $ 0 [13],[26]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.60% [12],[29] 12.71% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 863 [12],[29] $ 871 [13],[26]    
Cost 854 [12],[29] 868 [13],[26]    
Fair value $ 863 [12],[29] $ 871 [13],[26]    
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5        
Schedule of Investments [Line Items]        
Total Rate 12.60% [12],[29] 12.71% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 8,737 [12],[29] $ 8,822 [13],[26]    
Cost 8,651 [12],[29] 8,781 [13],[26]    
Fair value $ 8,737 [12],[29] $ 8,822 [13],[26]    
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.48% [12],[29] 15.54% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 9.00% [13],[26]    
PIK Rate 3.00% [12],[29] 1.00% [13],[26]    
Principal $ 4,510 [12],[29] $ 4,920 [13],[26]    
Cost 4,472 [12],[29] 4,861 [13],[26]    
Fair value $ 3,724 [12],[29] $ 4,417 [13],[26]    
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.11% [14] 10.62% [15]    
Spread (as a percent) 5.00% [14] 5.00% [15]    
Principal $ 5,720 [14] $ 5,765 [15]    
Cost 5,701 [14] 5,736 [15]    
Fair value $ 5,548 [14] $ 5,592 [15]    
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.25% [12],[29] 13.25% [13],[26]    
Spread (as a percent) 4.75% [12],[29] 4.75% [13],[26]    
Principal $ 11,552 [12],[29] $ 11,552 [13],[26]    
Cost 11,486 [12],[29] 11,285 [13],[26]    
Fair value $ 8,578 [12],[29] $ 9,069 [13],[26]    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.46%    
Spread (as a percent) [15],[26]   6.00%    
Principal [15],[26]   $ 2,803    
Cost [15],[26]   2,771    
Fair value [15],[26]   $ 2,803    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.46%    
Spread (as a percent) [15],[26]   6.00%    
Principal [15],[26]   $ 3,925    
Cost [15],[26]   3,880    
Fair value [15],[26]   $ 3,925    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.46%    
Spread (as a percent) [15],[26]   6.00%    
Principal [15],[26]   $ 3,464    
Cost [15],[26]   3,424    
Fair value [15],[26]   $ 3,464    
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.46%    
Spread (as a percent) [15],[26]   6.00%    
Principal [15],[26]   $ 7,796    
Cost [15],[26]   7,725    
Fair value [15],[26]   $ 7,796    
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 16,500 16,500    
Cost $ 1,100 $ 1,100    
Fair value $ 0 $ 80 80 0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 1,000 1,000    
Cost $ 1,500 $ 1,500    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.00% 13.00% [37] 13.00%  
Principal $ 1,310 $ 1,350 [37]    
Cost 1,310 1,350 [37]    
Fair value $ 345 $ 1,256 [37] $ 1,276 1,137
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.50% [12],[29],[30] 6.75% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (24) [12],[29],[30] (36) [13],[25],[26]    
Fair value $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.59% [12],[29] 12.28% [13],[26]    
Spread (as a percent) 7.50% [12],[29] 6.75% [13],[26]    
Principal $ 21,222 [12],[29] $ 16,721 [13],[26]    
Cost 21,014 [12],[29] 16,568 [13],[26]    
Fair value $ 21,222 [12],[29] $ 16,721 [13],[26]    
Investment, Identifier [Axis]: Market Force Information, LLC, Member Units        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Fair value     0 403
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 112,865 112,865    
Cost $ 113 $ 113    
Fair value $ 290 $ 110    
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 434,331 [27] 434,331 [28]    
Total Rate 8.00% [27] 8.00% [28]    
PIK Rate 8.00% [27] 8.00% [28]    
Cost $ 434 [27] $ 443 [28]    
Fair value 460 [27] 443 [28]    
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [30] 0 [25]    
Cost 0 [30] 0 [25]    
Fair value $ 0 [30] $ 0 [25]    
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.75% 12.75%    
Principal $ 1,663 $ 1,748    
Cost 1,633 1,707    
Fair value $ 1,633 $ 1,707    
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [12],[29],[30] 6.25% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (5) [12],[29],[30] (6) [13],[25],[26]    
Fair value $ (5) [12],[29],[30] $ (6) [13],[25],[26]    
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.95% [12],[29] 11.46% [13],[26]    
Spread (as a percent) 6.00% [12],[29] 6.00% [13],[26]    
Principal $ 2,497 [12],[29] $ 2,671 [13],[26]    
Cost 2,466 [12],[29] 2,632 [13],[26]    
Fair value $ 2,497 [12],[29] $ 2,671 [13],[26]    
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.56% [12],[29] 12.52% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 18,152 [12],[29] $ 18,152 [13],[26]    
Cost 17,935 [12],[29] 17,863 [13],[26]    
Fair value $ 16,242 [12],[29] $ 17,524 [13],[26]    
Investment, Identifier [Axis]: Mini Melts of America, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 300,000 [12] 300,000 [13]    
Cost $ 300 [12] $ 300 [13]    
Fair value $ 300 [12] $ 300 [13]    
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29],[38] 11.37%      
Spread (as a percent) 6.25% [12],[29],[38] 6.25% [13],[25],[26]    
Principal $ 975 [12],[29],[38] $ 0 [13],[25],[26]    
Cost 951 [12],[29],[38] (28) [13],[25],[26]    
Fair value $ 975 [12],[29],[38] $ (28) [13],[25],[26]    
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29],[53] 11.33%      
Spread (as a percent) 6.25% [12],[29],[53] 6.25% [13],[25],[26]    
Principal $ 860 [12],[29],[53] $ 0 [13],[25],[26]    
Cost 842 [12],[29],[53] (10) [13],[25],[26]    
Fair value $ 860 [12],[29],[53] $ (10) [13],[25],[26]    
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 10.31% [12],[29] 10.64% [13],[26]    
Spread (as a percent) 5.25% [12],[29] 5.25% [13],[26]    
Principal $ 3,209 [12],[29] $ 3,225 [13],[26]    
Cost 3,144 [12],[29] 3,149 [13],[26]    
Fair value $ 3,209 [12],[29] $ 3,149 [13],[26]    
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.31% [12],[29] 12.64% [13],[26]    
Spread (as a percent) 7.25% [12],[29] 7.25% [13],[26]    
Principal $ 3,209 [12],[29] $ 3,225 [13],[26]    
Cost 3,142 [12],[29] 3,146 [13],[26]    
Fair value $ 3,209 [12],[29] $ 3,146 [13],[26]    
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) [27] 40,821      
Total Rate [27] 12.00%      
PIK Rate [27] 12.00%      
Cost [27] $ 414      
Fair value [27] $ 414      
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.00%      
Principal $ 2,400      
Cost 2,186      
Fair value $ 2,186      
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Warrants        
Schedule of Investments [Line Items]        
Units (in shares) [23] 14,842      
Cost [23] $ 148      
Fair value [23] $ 148      
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 12,798,820 [12],[16],[17] 12,798,820 [13],[18],[19]    
Cost $ 256 [12],[16],[17] $ 256 [13],[18],[19]    
Fair value $ 211 [12],[16],[17] $ 197 [13],[18],[19]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 14.00% [12],[16],[17] 14.00% [13],[18],[19]    
PIK Rate 4.00% [12],[16],[17] 4.00% [13],[18],[19]    
Principal $ 1,155 [12],[16],[17] $ 1,120 [13],[18],[19]    
Cost 1,143 [12],[16],[17] 1,106 [13],[18],[19]    
Fair value $ 1,181 [12],[16],[17] $ 1,133 [13],[18],[19]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 14.00% [12],[16],[17] 14.00% [13],[18],[19]    
PIK Rate 4.00% [12],[16],[17] 4.00% [13],[18],[19]    
Principal $ 3,002 [12],[16],[17] $ 2,912 [13],[18],[19]    
Cost 2,970 [12],[16],[17] 2,870 [13],[18],[19]    
Fair value $ 3,319 [12],[16],[17] $ 3,184 [13],[18],[19]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 14.00% [12],[16],[17] 14.00% [13],[18],[19]    
PIK Rate 4.00% [12],[16],[17] 4.00% [13],[18],[19]    
Principal $ 5,109 [12],[16],[17] $ 4,957 [13],[18],[19]    
Cost 5,057 [12],[16],[17] 4,890 [13],[18],[19]    
Fair value $ 5,109 [12],[16],[17] $ 4,957 [13],[18],[19]    
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[16],[17] 8.00%      
PIK Rate [12],[16],[17] 8.00%      
Principal [12],[16],[17] $ 32      
Cost [12],[16],[17] 32      
Fair value [12],[16],[17] $ 32      
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[16],[17] 8.00%      
PIK Rate [12],[16],[17] 8.00%      
Principal [12],[16],[17] $ 16      
Cost [12],[16],[17] 16      
Fair value [12],[16],[17] $ 16      
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[16],[17] 8.00%      
PIK Rate [12],[16],[17] 8.00%      
Principal [12],[16],[17] $ 30      
Cost [12],[16],[17] 30      
Fair value [12],[16],[17] $ 30      
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 1,468 [27] 1,468 [28]    
Cost $ 680 [27] $ 680 [28]    
Fair value 6,530 [27] 6,598 [28] 6,788 5,708
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [30] 0 [25]    
Cost 0 [30] 0 [25]    
Fair value $ 0 [30] $ 0 [25] $ 0 0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 1,436 $ 1,436    
Cost 1,432 1,436    
Fair value 1,436 1,436 $ 1,436 1,436
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Common Equity        
Schedule of Investments [Line Items]        
Fair value $ 3,030 0    
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50%      
Fair value $ 6,609 0    
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [27] 91      
Cost [27] $ 3,030      
Fair value [27] $ 3,030      
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [29] 11.75%      
Spread (as a percent) [29] 6.50%      
Cost [29] $ 3,588      
Fair value $ 3,588 [29] $ 0    
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50%      
Cost $ 6,609      
Fair value $ 6,609      
Investment, Identifier [Axis]: NexRev LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 25,786,046 [27] 25,786,046 [28]    
Cost $ 2,053 [27] $ 2,053 [28]    
Fair value $ 2,460 [27] 1,590 [28] 1,590 280
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.00%      
Principal $ 490 0 [25]    
Cost 490 0 [25]    
Fair value $ 490 $ 0 [25] $ 0 0
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00% 10.00%  
Principal $ 2,453 $ 2,453    
Cost 2,446 2,435    
Fair value $ 2,453 $ 2,435 $ 2,431 2,119
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.50% [12],[29],[30] 7.00% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (3) [12],[29],[30] (4) [13],[25],[26]    
Fair value $ (3) [12],[29],[30] $ (3) [13],[25],[26]    
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.98%      
Spread (as a percent) 6.50% [12],[29] 7.00% [13],[25],[26]    
Principal $ 14,651 [12],[29] $ 0 [13],[25],[26]    
Cost 14,521 [12],[29] (12) [13],[25],[26]    
Fair value $ 14,651 [12],[29] $ (12) [13],[25],[26]    
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.54%    
Spread (as a percent) [13],[26]   7.00%    
Principal [13],[26]   $ 10,991    
Cost [13],[26]   10,888    
Fair value [13],[26]   $ 10,991    
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.52%    
Spread (as a percent) [13],[26]   7.00%    
Principal [13],[26]   $ 3,878    
Cost [13],[26]   3,807    
Fair value [13],[26]   $ 3,878    
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 576 515    
Cost $ 645 $ 515    
Fair value 1,440 1,290 2,310 2,010
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1.1        
Schedule of Investments [Line Items]        
Fair value $ 2,660 $ 2,310    
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 114 102    
Cost $ 2,808 $ 2,550    
Fair value 2,660 2,310 $ 1,290 1,290
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2.1        
Schedule of Investments [Line Items]        
Fair value $ 1,440 $ 1,290    
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.85% [29] 11.98% [26] 11.98%  
Spread (as a percent) 6.50% [29] 6.50% [26] 6.50%  
Principal $ 900 [29] $ 900 [26]    
Cost 900 [29] 899 [26]    
Fair value $ 900 [29] $ 899 [26] $ 898 1,100
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% 12.00% 12.00%  
Principal $ 4,610 $ 4,610    
Cost 4,609 4,606    
Fair value $ 4,609 $ 4,606 $ 4,606 4,603
Investment, Identifier [Axis]: Obra Capital, Inc. (f/k/a Vida Capital, Inc.), Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [15]   11.47%    
Spread (as a percent) [15]   6.00%    
Principal [15]   $ 7,043    
Cost [15]   6,711    
Fair value [15]   $ 6,039    
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 7.50%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (14)      
Fair value [12],[29],[30] $ (14)      
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 12.53%      
Spread (as a percent) [12],[29] 7.50%      
Principal [12],[29] $ 11,979      
Cost [12],[29] 11,643      
Fair value [12],[29] $ 11,514      
Investment, Identifier [Axis]: OnPoint, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.60%      
Spread (as a percent) [12],[29] 7.00%      
Principal [12],[29] $ 2,910      
Cost [12],[29] 2,886      
Fair value [12],[29] $ 2,886      
Investment, Identifier [Axis]: Oneliance, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 282 282    
Cost $ 282 $ 282    
Fair value $ 550 $ 282 $ 282 264
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   16.48% [26] 16.48%  
Spread (as a percent) 10.00% 11.00% [26] 11.00%  
Principal [26]   $ 1,360    
Cost [26]   1,346    
Fair value $ 0 $ 1,339 [26] $ 1,357 1,380
Investment, Identifier [Axis]: Orttech Holdings, LLC, Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 2,500 [27],[40] 2,500 [28],[39]    
Cost $ 2,500 [27],[40] $ 2,500 [28],[39]    
Fair value $ 3,670 [27],[40] $ 4,260 [28],[39] $ 4,260 2,940
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 11.00% [29],[30] 11.00% [25],[26] 11.00%  
Principal $ 0 [29],[30] $ 0 [25],[26]    
Cost (1) [29],[30] (2) [25],[26]    
Fair value $ 0 [29],[30] $ 0 [25],[26] $ 0 (2)
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 16.35% [29] 16.48% [26] 16.48%  
Spread (as a percent) 11.00% [29] 11.00% [26] 11.00%  
Principal $ 5,490 [29] $ 5,510 [26]    
Cost 5,449 [29] 5,452 [26]    
Fair value 5,490 [29] 5,510 [26] $ 5,550 5,814
Investment, Identifier [Axis]: Other Amounts related to investments transferred to or from other 1940 Act classification during the period        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: Other Amounts related to investments transferred to or from other 1940 Act classification during the period, Affiliate Investments        
Schedule of Investments [Line Items]        
Fair value 0 (12,834)    
Investment, Identifier [Axis]: Other Amounts related to investments transferred to or from other 1940 Act classification during the period, Control Investments        
Schedule of Investments [Line Items]        
Fair value $ 0 $ 0 0 (6,392)
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.19% [12],[16],[17],[29],[38] 12.80% [13],[18],[19],[26],[55]    
Spread (as a percent) 6.75% [12],[16],[17],[29],[38] 7.25% [13],[18],[19],[26],[55]    
Principal $ 448 [12],[16],[17],[29],[38] $ 198 [13],[18],[19],[26],[55]    
Cost 441 [12],[16],[17],[29],[38] 189 [13],[18],[19],[26],[55]    
Fair value $ 442 [12],[16],[17],[29],[38] $ 196 [13],[18],[19],[26],[55]    
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.13% [12],[16],[17],[29] 12.88% [13],[18],[19],[26]    
Spread (as a percent) 6.75% [12],[16],[17],[29] 7.25% [13],[18],[19],[26]    
Principal $ 1,422 [12],[16],[17],[29] $ 1,734 [13],[18],[19],[26]    
Cost 1,404 [12],[16],[17],[29] 1,707 [13],[18],[19],[26]    
Fair value $ 1,403 [12],[16],[17],[29] $ 1,720 [13],[18],[19],[26]    
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [13],[25],[26]   5.75%    
Principal [13],[25],[26]   $ 0    
Cost [13],[25],[26]   (11)    
Fair value [13],[25],[26]   $ 0    
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26],[56]   11.24%    
Spread (as a percent) [13],[26],[56]   5.75%    
Principal [13],[26],[56]   $ 423    
Cost [13],[26],[56]   414    
Fair value [13],[26],[56]   $ 421    
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.25%    
Spread (as a percent) [13],[26]   5.75%    
Principal [13],[26]   $ 2,456    
Cost [13],[26]   2,412    
Fair value [13],[26]   $ 2,442    
Investment, Identifier [Axis]: Peaches Holding Corporation, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 806      
Cost $ 1,805      
Fair value $ 1,805      
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 110 [27] 110    
Cost $ 3,135 [27] $ 3,135    
Fair value 4,340 [27] $ 3,135    
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   8.00%    
Principal 0 [30] $ 115    
Cost (8) [30] 105    
Fair value $ 0 [30] $ 105    
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00%    
Principal $ 7,260 $ 7,660    
Cost 7,108 7,472    
Fair value $ 7,260 $ 7,472    
Investment, Identifier [Axis]: Power System Solutions, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 532 [12] 532 [13]    
Cost $ 532 [12] $ 532 [13]    
Fair value $ 1,360 [12] $ 500 [13]    
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.50% [12],[29],[30] 6.75% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (29) [12],[29],[30] (35) [13],[25],[26]    
Fair value $ (29) [12],[29],[30] $ (35) [13],[25],[26]    
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.35%      
Spread (as a percent) 6.50% [12],[29] 6.75% [13],[25],[26]    
Principal $ 2,646 [12],[29] $ 0 [13],[25],[26]    
Cost 2,583 [12],[29] (35) [13],[25],[26]    
Fair value $ 2,646 [12],[29] $ (35) [13],[25],[26]    
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 11.60% [12],[29] 12.12% [13],[26]    
Spread (as a percent) 6.50% [12],[29] 6.75% [13],[26]    
Principal $ 7,879 [12],[29] $ 7,939 [13],[26]    
Cost 7,705 [12],[29] 7,729 [13],[26]    
Fair value $ 7,879 [12],[29] $ 7,939 [13],[26]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 10.58% [12],[29] 12.28% [13],[26]    
Spread (as a percent) 5.50% [12],[29] 6.85% [13],[26]    
Principal $ 5,925 [12],[29] $ 5,970 [13],[26]    
Cost 5,757 [12],[29] 5,813 [13],[26]    
Fair value $ 5,925 [12],[29] $ 5,970 [13],[26]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.10% [12],[29] 12.20% [13],[26]    
Spread (as a percent) 5.50% [12],[29] 6.85% [13],[26]    
Principal $ 566 [12],[29] $ 570 [13],[26]    
Cost 548 [12],[29] 553 [13],[26]    
Fair value $ 566 [12],[29] $ 570 [13],[26]    
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 10.10%      
Spread (as a percent) [12],[29] 5.50%      
Principal [12],[29] $ 569      
Cost [12],[29] 556      
Fair value [12],[29] $ 569      
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 9.85%      
Spread (as a percent) [12],[29] 5.25%      
Principal [12],[29] $ 646      
Cost [12],[29] 637      
Fair value [12],[29] $ 646      
Investment, Identifier [Axis]: Purge Rite, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12] 13,021      
Cost [12] $ 13      
Fair value [12] $ 520      
Investment, Identifier [Axis]: Purge Rite, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 13,021 [12] 1,302,083 [13]    
Cost $ 1,289 [12] $ 1,302 [13]    
Fair value $ 1,289 [12] $ 1,302 [13]    
Investment, Identifier [Axis]: Purge Rite, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 8.00% [12],[29],[30] 8.00% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (16) [12],[29],[30] (19) [13],[25],[26]    
Fair value $ (16) [12],[29],[30] $ (19) [13],[25],[26]    
Investment, Identifier [Axis]: Purge Rite, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.64% [12],[29] 13.70% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 8.00% [13],[26]    
Principal $ 3,906 [12],[29] $ 3,906 [13],[26]    
Cost 3,828 [12],[29] 3,813 [13],[26]    
Fair value $ 3,906 [12],[29] 3,813 [13],[26]    
Investment, Identifier [Axis]: RA Outdoors LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12] 15,036      
Cost [12] $ 0      
Fair value $ 0 [12] $ 0    
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.59% [12],[29] 12.22% [13],[26],[49]    
Spread (as a percent) 6.75% [12],[29] 6.75% [13],[26],[49]    
PIK Rate [12],[29] 11.59%      
Principal $ 1,313 [12],[29] $ 796 [13],[26],[49]    
Cost 1,308 [12],[29] 789 [13],[26],[49]    
Fair value $ 1,190 [12],[29] $ 745 [13],[26],[49]    
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.59% [12],[29] 12.21% [13],[26]    
Spread (as a percent) 6.75% [12],[29] 6.75% [13],[26]    
PIK Rate [12],[29] 11.59%      
Principal $ 13,731 [12],[29] $ 12,917 [13],[26]    
Cost 13,672 [12],[29] 12,829 [13],[26]    
Fair value $ 12,441 [12],[29] $ 12,089 [13],[26]    
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [15],[26]   11.14%    
Spread (as a percent) [15],[26]   5.50%    
Principal [15],[26]   $ 9,691    
Cost [15],[26]   9,691    
Fair value [15],[26]   $ 7,237    
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.92% [12],[29],[38] 18.47% [13],[26],[57]    
Spread (as a percent) 6.75% [12],[29],[38] 6.50% [13],[26],[57]    
Principal $ 1,333 [12],[29],[38] $ 833 [13],[26],[57]    
Cost 1,288 [12],[29],[38] 781 [13],[26],[57]    
Fair value $ 1,313 [12],[29],[38] $ 818 [13],[26],[57]    
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.03% [12],[29] 11.88% [13],[26]    
Spread (as a percent) 6.75% [12],[29] 6.50% [13],[26]    
Principal $ 10,354 [12],[29] $ 10,553 [13],[26]    
Cost 10,109 [12],[29] 10,261 [13],[26]    
Fair value $ 10,194 [12],[29] $ 10,362 [13],[26]    
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.86%      
Spread (as a percent) [12],[29] 6.75%      
Principal [12],[29] $ 5,097      
Cost [12],[29] 4,997      
Fair value [12],[29] $ 5,018      
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,230 1,230    
Cost $ 1,230 $ 1,230    
Fair value $ 0 0 310 1,650
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
PIK Rate [30],[34] 10.00%      
Principal $ 0 [30],[34] 0 [25]    
Cost (5) [30],[34] (6) [25]    
Fair value $ (5) [30],[34] $ (6) [25] $ (6) (8)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.50% [34] 12.50% 12.50%  
PIK Rate [34] 10.00%      
Principal $ 3,740 [34] $ 3,790    
Cost 3,699 [34] 3,745    
Fair value $ 1,713 [34] $ 3,421 $ 3,748 3,902
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 8.00% [12],[29],[30] 6.50% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (7) [12],[29],[30] (10) [13],[25],[26]    
Fair value $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.59% [12],[29] 12.16% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 6.50% [13],[26]    
Principal $ 4,223 [12],[29] $ 4,219 [13],[26]    
Cost 4,158 [12],[29] 4,150 [13],[26]    
Fair value $ 4,057 [12],[29] $ 4,142 [13],[26]    
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 14.59% [12],[29] 14.16% [13],[26]    
Spread (as a percent) 9.00% [12],[29] 8.50% [13],[26]    
Principal $ 4,223 [12],[29] $ 4,219 [13],[26]    
Cost 4,158 [12],[29] 4,150 [13],[26]    
Fair value $ 4,016 [12],[29] $ 4,082 [13],[26]    
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.79% [12],[29] 13.54% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 6.00% [13],[26]    
PIK Rate 2.00% [12],[29] 2.00% [13],[26]    
Principal $ 6,509 [12],[29] $ 6,410 [13],[26]    
Cost 6,496 [12],[29] 6,389 [13],[26]    
Fair value $ 6,509 [12],[29] $ 6,383 [13],[26]    
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.79% [12],[29] 13.54% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 6.00% [13],[26]    
PIK Rate 2.00% [12],[29] 2.00% [13],[26]    
Principal $ 8,465 [12],[29] $ 9,022 [13],[26]    
Cost 8,446 [12],[29] 8,991 [13],[26]    
Fair value 8,465 [12],[29] 8,984 [13],[26]    
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Fair value $ 5,390 6,390    
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.75%      
Fair value $ 750 375    
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value $ 0 18,179    
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.63%      
Fair value $ 22,554 $ 0    
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units        
Schedule of Investments [Line Items]        
Units (in shares) 55 [27] 55 [28]    
Cost $ 508 [27] $ 508 [28]    
Fair value $ 5,390 [27] $ 6,390 [28] $ 5,840 4,550
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 11.75% 11.25% 11.25%  
Principal $ 750 $ 375    
Cost 744 370    
Fair value $ 750 $ 375 $ 625 0
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.63% [58] 12.47% 12.49%  
Principal $ 22,554 [58] $ 18,179    
Cost 22,531 [58] 18,019    
Fair value $ 22,554 [58] $ 18,179 $ 18,179 0
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Fair value     0 29,929
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 200,000 [12] 200,000 [13]    
Cost $ 200 [12] $ 200 [13]    
Fair value $ 190 [12] $ 160 [13]    
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29],[38] 12.46%      
Spread (as a percent) 7.50% [12],[29],[38] 8.00% [13],[25],[26]    
Principal $ 780 [12],[29],[38] $ 0 [13],[25],[26]    
Cost 769 [12],[29],[38] (14) [13],[25],[26]    
Fair value $ 780 [12],[29],[38] $ 0 [13],[25],[26]    
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.45% [12],[29] 13.72% [13],[26]    
Spread (as a percent) 7.50% [12],[29] 8.00% [13],[26]    
Principal $ 4,888 [12],[29] $ 4,925 [13],[26]    
Cost 4,834 [12],[29] 4,857 [13],[26]    
Fair value $ 4,888 [12],[29] $ 4,925 [13],[26]    
Investment, Identifier [Axis]: Slick Innovations, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 17,500 [27] 17,500    
Cost $ 0 [27] $ 114    
Fair value $ 540 [27] $ 600    
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 14.00% 14.00%    
Principal $ 4,200 $ 2,860    
Cost 4,087 2,777    
Fair value $ 4,200 $ 2,860    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 61 [12] 60,606 [13]    
Cost $ 61 [12] $ 61 [13]    
Fair value $ 59 [12] $ 59 [13]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.46%    
Spread (as a percent) 5.25% [12],[29],[30] 6.00% [13],[26]    
Principal $ 0 [12],[29],[30] $ 38 [13],[26]    
Cost 0 [12],[29],[30] 34 [13],[26]    
Fair value $ 0 [12],[29],[30] $ 34 [13],[26]    
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.20% [12],[29] 11.70% [13],[26]    
Spread (as a percent) 5.25% [12],[29] 6.00% [13],[26]    
Principal $ 4,388 [12],[29] $ 2,979 [13],[26]    
Cost 4,355 [12],[29] 2,943 [13],[26]    
Fair value $ 4,355 [12],[29] $ 2,979 [13],[26]    
Investment, Identifier [Axis]: Student Resource Center, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 6,564,055 [12] 6,564,055 [13]    
Cost $ 0 [12] $ 0 [13]    
Fair value $ 0 [12] $ 0 [13] $ 139 0
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate   8.50% [13],[35] 8.50%  
PIK Rate   8.50% [13],[35] 8.50%  
Principal [13],[35]   $ 5,918    
Cost [13],[35]   5,426    
Fair value   3,543 [13],[35] $ 5,298 5,063
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12] 8.50%      
PIK Rate [12] 8.50%      
Principal [12] $ 223      
Cost [12] 223      
Fair value [12] $ 223      
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 $ 1,826 3,543    
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[34] 8.50%      
PIK Rate [12],[34] 8.50%      
Principal [12],[34] $ 5,918      
Cost [12],[34] 5,425      
Fair value [12],[34] $ 1,826      
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2.1        
Schedule of Investments [Line Items]        
Total Rate 8.50%      
PIK Rate 8.50%      
Fair value $ 223 $ 0    
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 1,651 1,651    
Cost $ 165 $ 165    
Fair value $ 0 $ 0 900 1,920
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2        
Schedule of Investments [Line Items]        
Units (in shares) 1,411 1,411    
Cost $ 141 $ 141    
Fair value $ 0 $ 0 150 0
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) 136 136    
Cost $ 2,311 $ 2,311    
Fair value $ 0 $ 0 $ 300 0
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [34],[36] 12.00% [37] 12.00%  
PIK Rate [34],[36] 12.00%      
Principal $ 460 [34],[36] $ 460 [37]    
Cost 460 [34],[36] 460 [37]    
Fair value $ 432 [34],[36] $ 432 [37] $ 446 460
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [34],[36] 12.00% [37] 12.00%  
PIK Rate [34],[36] 12.00%      
Principal $ 3,800 [34],[36] $ 3,800 [37]    
Cost 3,800 [34],[36] 3,800 [37]    
Fair value $ 1,164 [34],[36] $ 3,565 [37] $ 3,681 3,780
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 1,000,000 [12],[40] 1,000,000 [13],[39]    
Cost $ 1,000 [12],[40] $ 1,000 [13],[39]    
Fair value $ 2,410 [12],[40] $ 2,840 [13],[39]    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1        
Schedule of Investments [Line Items]        
Units (in shares) 65,427 [27] 43,027    
Cost $ 65 [27] $ 43    
Fair value $ 65 [27] $ 43    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2        
Schedule of Investments [Line Items]        
Units (in shares) 320,000 [27] 320,000 [28]    
Cost $ 1,600 [27] $ 1,600 [28]    
Fair value 1,600 [27] $ 1,600 [28]    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate   13.00%    
Principal 0 [30] $ 40    
Cost (2) [30] 37    
Fair value $ (2) [30] $ 37    
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.00% 13.00%    
Principal $ 1,400 $ 1,880    
Cost 1,388 1,858    
Fair value $ 1,372 $ 1,841    
Investment, Identifier [Axis]: Titan Meter Midco Corp., Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12] 468,750      
Total Rate [12] 8.00%      
PIK Rate [12] 8.00%      
Cost [12] $ 469      
Fair value [12] $ 469      
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.50%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (43)      
Fair value [12],[29],[30] $ (43)      
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.10%      
Spread (as a percent) [12],[29] 6.50%      
Principal [12],[29] $ 13,082      
Cost [12],[29] 12,676      
Fair value [12],[29] $ 12,844      
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 154 [27] 154 [28]    
Cost $ 1,164 [27] $ 1,164 [28]    
Fair value 2,380 [27] 3,180 [28] 3,350 1,950
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Principal 0 [30] 0 [25]    
Cost (1) [30] (1) [25]    
Fair value $ 0 [30] $ 0 [25] $ 0 0
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.50% 12.00% 12.00%  
Principal $ 1,980 $ 1,980    
Cost 1,960 1,975    
Fair value $ 1,980 $ 1,980 $ 1,980 1,980
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.50% [14],[29],[34] 12.53% [15],[26],[35]    
Spread (as a percent) 7.15% [14],[29],[34] 7.15% [15],[26],[35]    
PIK Rate 6.00% [14],[29],[34] 6.00% [15],[26],[35]    
Principal $ 6,755 [14],[29],[34] $ 6,802 [15],[26],[35]    
Cost 2,458 [14],[29],[34] 2,623 [15],[26],[35]    
Fair value 2,702 [14],[29],[34] 2,438 [15],[26],[35]    
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2        
Schedule of Investments [Line Items]        
Principal 692 [14],[34] 692 [15],[35]    
Cost 15 [14],[34] 15 [15],[35]    
Fair value $ 0 [14],[34] $ 0 [15],[35]    
Investment, Identifier [Axis]: UPS Intermediate, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) [12] 412,371      
Cost [12] $ 412      
Fair value [12] $ 412      
Investment, Identifier [Axis]: UPS Intermediate, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.51%      
Spread (as a percent) [12],[29] 6.25%      
Principal [12],[29] $ 19,539      
Cost [12],[29] 19,147      
Fair value [12],[29] $ 19,147      
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.46%    
Spread (as a percent) [13],[26]   6.00%    
Principal [13],[26]   $ 12,405    
Cost [13],[26]   12,308    
Fair value [13],[26]   $ 12,405    
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.96%    
Spread (as a percent) [13],[26]   6.50%    
Principal [13],[26]   $ 4,825    
Cost [13],[26]   4,742    
Fair value [13],[26]   $ 4,825    
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.96%    
Spread (as a percent) [13],[26]   6.50%    
Principal [13],[26]   $ 2,515    
Cost [13],[26]   2,468    
Fair value [13],[26]   $ 2,515    
Investment, Identifier [Axis]: Urgent DSO LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) [27] 1,000      
Total Rate [27] 9.00%      
PIK Rate [27] 9.00%      
Cost [27] $ 1,057      
Fair value [27] $ 1,057      
Investment, Identifier [Axis]: Urgent DSO LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.50%      
Principal $ 2,200      
Cost 2,142      
Fair value $ 2,142      
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.75% [12],[29] 12.99% [13],[26]    
Spread (as a percent) 7.50% [12],[29] 7.50% [13],[26]    
Principal $ 3,000 [12],[29] $ 3,000 [13],[26]    
Cost 2,934 [12],[29] 2,923 [13],[26]    
Fair value $ 3,000 [12],[29] $ 3,000 [13],[26]    
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC, Common Equity        
Schedule of Investments [Line Items]        
Units (in shares) 769,231 [12],[27] 769,231 [13],[28]    
Cost $ 769 [12],[27] $ 769 [13],[28]    
Fair value $ 1,910 [12],[27] $ 1,911 [13],[28]    
Investment, Identifier [Axis]: VVS Holdco LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 3,060 [27],[40] 3,060 [28],[39]    
Cost $ 3,060 [27],[40] $ 3,060 [28],[39]    
Fair value $ 3,060 [27],[40] $ 3,060 [28],[39] $ 2,960 2,990
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00% [29],[30] 6.00% [25],[26],[37] 6.00%  
Principal $ 0 [29],[30] $ 0 [25],[26],[37]    
Cost 0 [29],[30] 0 [25],[26],[37]    
Fair value $ 0 [29],[30] $ 0 [25],[26],[37] $ (1) (5)
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 11.50% 11.50% 11.50%  
Principal $ 6,760 $ 7,050    
Cost 6,672 6,926    
Fair value $ 6,672 $ 6,926 $ 6,915 7,421
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock        
Schedule of Investments [Line Items]        
Units (in shares) 70,207 [12] 70,207 [13]    
Cost $ 767 [12] $ 767 [13]    
Fair value $ 3,180 [12] $ 2,180 [13]    
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   12.63%    
Spread (as a percent) [13],[26]   7.00%    
Principal [13],[26]   $ 12,500    
Cost [13],[26]   12,193    
Fair value [13],[26]   $ 12,193    
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29],[59] 12.47%      
Principal [12],[29],[59] $ 1,705      
Cost [12],[29],[59] 1,666      
Fair value [12],[29],[59] $ 1,705      
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 1, Prime        
Schedule of Investments [Line Items]        
Spread (as a percent) 6.00%      
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 1, Secured Overnight Financing Rate        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.00%      
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.96%      
Spread (as a percent) [12],[29] 7.00%      
Principal [12],[29] $ 12,406      
Cost [12],[29] 12,146      
Fair value [12],[29] $ 12,406      
Investment, Identifier [Axis]: Volusion, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 772,620 772,620    
Cost $ 1,104 $ 1,104    
Fair value $ 0 $ 0 0 0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1        
Schedule of Investments [Line Items]        
Units (in shares) 2,184,683 2,184,683    
Cost $ 1,901 $ 3,706    
Fair value 3,200 3,110 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 2        
Schedule of Investments [Line Items]        
Units (in shares) 61,077 61,077    
Cost $ 0 $ 0    
Fair value 0 0 4,010 0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2.1        
Schedule of Investments [Line Items]        
Fair value $ 3,200 $ 3,110    
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3        
Schedule of Investments [Line Items]        
Units (in shares) 2,090,001 2,090,001    
Cost $ 6,000 $ 6,000    
Fair value $ 0 $ 0 $ 0 0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 10.00% 10.00%    
Principal $ 900 $ 900    
Cost 900 900    
Fair value $ 900 $ 900    
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate     10.00%  
Fair value     $ 900 0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Fair value     0 6,392
Investment, Identifier [Axis]: Volusion, LLC, Unsecured Convertible Debt        
Schedule of Investments [Line Items]        
Fair value     0 0
Investment, Identifier [Axis]: Volusion, LLC, Warrants        
Schedule of Investments [Line Items]        
Fair value     $ 0 $ 0
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 500,000 [12] 500,000 [13]    
Cost $ 500 [12] $ 500 [13]    
Fair value $ 1,160 [12] $ 910 [13]    
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) 7.00% [12],[29],[30] 7.00% [13],[25],[26]    
Principal $ 0 [12],[29],[30] $ 0 [13],[25],[26]    
Cost (4) [12],[29],[30] (5) [13],[25],[26]    
Fair value $ (4) [12],[29],[30] $ (5) [13],[25],[26]    
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.48% [12],[29] 12.54% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 3,733 [12],[29] $ 4,654 [13],[26]    
Cost 3,702 [12],[29] 4,600 [13],[26]    
Fair value $ 3,733 [12],[29] $ 4,654 [13],[26]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.00% [12] 11.50% [13],[26],[52]    
Spread (as a percent) [13],[26],[52]   6.00%    
PIK Rate [12] 4.00%      
Principal $ 306 [12] $ 253 [13],[26],[52]    
Cost 303 [12] 249 [13],[26],[52]    
Fair value $ 290 [12] $ 253 [13],[26],[52]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.00% [12] 11.50% [13],[26]    
Spread (as a percent) [13],[26]   6.00%    
PIK Rate [12] 4.00%      
Principal $ 53 [12] $ 53 [13],[26]    
Cost 48 [12] 47 [13],[26]    
Fair value $ 50 [12] $ 53 [13],[26]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.00% [12] 11.50% [13],[26]    
Spread (as a percent) [13],[26]   6.00%    
PIK Rate [12] 4.00%      
Principal $ 2,177 [12] $ 2,166 [13],[26]    
Cost 2,162 [12] 2,146 [13],[26]    
Fair value $ 2,059 [12] $ 2,166 [13],[26]    
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate 12.00% [12] 11.50% [13],[26]    
Spread (as a percent) [13],[26]   6.00%    
PIK Rate [12] 4.00%      
Principal $ 1,965 [12] $ 1,955 [13],[26]    
Cost 1,951 [12] 1,936 [13],[26]    
Fair value $ 1,858 [12] $ 1,955 [13],[26]    
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock        
Schedule of Investments [Line Items]        
Units (in shares) 200,000 [12],[27] 200,000 [13]    
Cost $ 200 [12],[27] $ 200 [13]    
Fair value $ 590 [12],[27] $ 390 [13]    
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 9.60% [12],[29],[53] 11.34% [13],[26],[60]    
Spread (as a percent) 5.00% [12],[29],[53] 6.00% [13],[26],[60]    
Principal $ 662 [12],[29],[53] $ 665 [13],[26],[60]    
Cost 652 [12],[29],[53] 654 [13],[26],[60]    
Fair value $ 662 [12],[29],[53] $ 665 [13],[26],[60]    
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 9.60% [12],[29] 11.35% [13],[26]    
Spread (as a percent) 5.00% [12],[29] 6.00% [13],[26]    
Principal $ 2,925 [12],[29] $ 2,948 [13],[26]    
Cost 2,888 [12],[29] 2,907 [13],[26]    
Fair value $ 2,925 [12],[29] $ 2,947 [13],[26]    
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 9.60% [12],[29] 11.35% [13],[26]    
Spread (as a percent) 5.00% [12],[29] 6.00% [13],[26]    
Principal $ 1,456 [12],[29] $ 1,467 [13],[26]    
Cost 1,430 [12],[29] 1,438 [13],[26]    
Fair value $ 1,456 [12],[29] $ 1,467 [13],[26]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 13.59% [12],[29] 12.64% [13],[26],[61]    
Spread (as a percent) 8.00% [12],[29] 7.00% [13],[26],[61]    
Principal $ 833 [12],[29] $ 2,778 [13],[26],[61]    
Cost 778 [12],[29] 2,745 [13],[26],[61]    
Fair value $ 800 [12],[29] $ 2,778 [13],[26],[61]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 13.59% [12],[29] 12.66% [13],[26]    
Spread (as a percent) 8.00% [12],[29] 7.00% [13],[26]    
Principal $ 2,343 [12],[29] $ 2,583 [13],[26]    
Cost 2,305 [12],[29] 2,528 [13],[26]    
Fair value $ 2,248 [12],[29] $ 2,583 [13],[26]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate 12.59% [12],[29] 12.66% [13],[26]    
Spread (as a percent) 7.00% [12],[29] 7.00% [13],[26]    
Principal $ 9,050 [12],[29] $ 11,625 [13],[26]    
Cost 8,892 [12],[29] 11,479 [13],[26]    
Fair value $ 8,684 [12],[29] $ 11,625 [13],[26]    
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 14.59%      
Spread (as a percent) [12],[29] 9.00%      
Principal [12],[29] $ 9,050      
Cost [12],[29] 8,892      
Fair value [12],[29] $ 8,684      
Investment, Identifier [Axis]: World Micro Holdings, LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Units (in shares) 530 [27] 530 [28]    
Cost $ 530 [27] $ 530 [28]    
Fair value $ 530 [27] $ 530 [28]    
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 13.00% 13.00%    
Principal $ 1,606 $ 1,627    
Cost 1,586 1,601    
Fair value $ 1,586 $ 1,601    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 10.16%      
Spread (as a percent) 5.25% [12],[29] 5.25% [13],[25],[26]    
Principal $ 1,179 [12],[29] $ 0 [13],[25],[26]    
Cost 1,159 [12],[29] (5) [13],[25],[26]    
Fair value $ 1,179 [12],[29] $ 0 [13],[25],[26]    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 10.63% [12],[29] 11.22% [13],[26]    
Spread (as a percent) 5.25% [12],[29] 5.75% [13],[26]    
Principal $ 2,334 [12],[29] $ 1,188 [13],[26]    
Cost 2,309 [12],[29] 1,163 [13],[26]    
Fair value $ 2,334 [12],[29] $ 1,188 [13],[26]    
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [13],[26]   11.25%    
Spread (as a percent) [13],[26]   5.75%    
Principal [13],[26]   $ 2,352    
Cost [13],[26]   2,321    
Fair value [13],[26]   $ 2,352    
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt        
Schedule of Investments [Line Items]        
Total Rate 12.89% [14],[29] 13.00% [15],[26]    
Spread (as a percent) 7.50% [14],[29] 7.50% [15],[26]    
Principal $ 5,153 [14],[29] $ 5,584 [15],[26]    
Cost 5,087 [14],[29] 5,485 [15],[26]    
Fair value $ 4,699 [14],[29] $ 5,110 [15],[26]    
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29],[30] 6.00%      
Principal [12],[29],[30] $ 0      
Cost [12],[29],[30] (29)      
Fair value [12],[29],[30] $ (29)      
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Spread (as a percent) [12],[29] 6.00%      
Principal [12],[29] $ 630      
Cost [12],[29] 598      
Fair value [12],[29] $ 613      
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 3        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.26%      
Spread (as a percent) [12],[29] 6.00%      
Principal [12],[29] $ 995      
Cost [12],[29] 977      
Fair value [12],[29] $ 969      
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 4        
Schedule of Investments [Line Items]        
Total Rate [12],[29] 11.30%      
Spread (as a percent) [12],[29] 6.00%      
Principal [12],[29] $ 7,133      
Cost [12],[29] 7,000      
Fair value [12],[29] $ 6,944      
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1        
Schedule of Investments [Line Items]        
Total Rate 12.46% [12],[29],[53] 12.71% [13],[26],[62]    
Spread (as a percent) 7.25% [12],[29],[53] 7.25% [13],[26],[62]    
PIK Rate [12],[29],[53] 1.50%      
Principal $ 2,360 [12],[29],[53] $ 2,356 [13],[26],[62]    
Cost 2,360 [12],[29],[53] 2,352 [13],[26],[62]    
Fair value $ 2,219 [12],[29],[53] $ 2,234 [13],[26],[62]    
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2        
Schedule of Investments [Line Items]        
Total Rate 12.46% [12],[29],[53] 12.71% [13],[26],[62]    
Spread (as a percent) 7.25% [12],[29],[53] 7.25% [13],[26],[62]    
PIK Rate [12],[29],[53] 1.50%      
Principal $ 591 [12],[29],[53] $ 591 [13],[26],[62]    
Cost 591 [12],[29],[53] 589 [13],[26],[62]    
Fair value $ 555 [12],[29],[53] $ 555 [13],[26],[62]    
[1] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[2] Principal is net of repayments. Cost is net of repayments and accumulated unearned income. Negative cost is the result of the capitalized discount being greater than the principal amount outstanding on the loan.
[3] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par.
[4] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments—Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par.
[5] Money market fund interests included in cash and cash equivalents.
[6] 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.
[7] 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.
[8] 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.
[9] 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.
[10] Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[11] Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
[12] Private Loan portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Private Loan portfolio investments.
[13] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments.
[14] Middle Market portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Middle Market portfolio investments.
[15] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments.
[16] 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.
[17] Portfolio company headquarters are located outside of the United States.
[18] 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.
[19] Portfolio company headquarters are located outside of the United States.
[20] Other Portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Other Portfolio investments.
[21] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments.
[22] Effective yield as of September 30, 2024 was approximately 4.58% on the Fidelity Government Portfolio Fund Class III.
[23] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit.
[24] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit.
[25] The position is unfunded and no interest income is being earned as of December 31, 2023. The position may earn a nominal unused facility fee on committed amounts.
[26] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 95% of these floating rate loans (based on the par amount) contain LIBOR or SOFR floors which range between 0.75% and 2.00%, with a weighted-average floor of 1.17%.
[27] Income producing through dividends or distributions.
[28] Income producing through dividends or distributions.
[29] 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 (“SOFR”) floors which range between 0.75% and 5.25%, with a weighted-average floor of 1.25%.
[30] The position is unfunded and no interest income is being earned as of September 30, 2024. The position may earn a nominal unused facility fee on committed amounts.
[31] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit.
[32] Index based floating interest rate is subject to contractual maximum base rate of 3.00%.
[33] Index based floating interest rate is subject to contractual maximum base rate of 3.00%.
[34] Non-accrual and non-income producing debt investment.
[35] Non-accrual and non-income producing debt investment.
[36] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[37] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
[38] RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2024.
[39] Shares/Units represent ownership in a related Real Estate or HoldCo entity.
[40] Shares/Units represent ownership in a related Real Estate or HoldCo entity.
[41] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated.
[42] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated.
[43] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[44] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[45] Effective yield as of December 31, 2023 was approximately 5.25% on the Fidelity Government Portfolio Class III Fund.
[46] Effective yield as of September 30, 2024 was approximately 4.97% on the First American Treasury Obligations Fund Class Z.
[47] Effective yield as of December 31, 2023 was approximately 5.23% on the First American Treasury Obligations Fund Class Z.
[48] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 1.50%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[49] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[50] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[51] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[52] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[53] 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, 2024.
[54] As of December 31, 2023, borrowings under the loan facility bear interest at SOFR+7.00% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[55] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[56] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[57] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.50% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[58] 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 11.75% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
[59] RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. As of September 30, 2024, the facility had contracts running under the terms SF+7.00% (Floor 1.00%) and P+6.00% (Floor 2.00%). The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2024.
[60] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+6.00% (Floor 0.75%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[61] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.
[62] As of December 31, 2023, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2023.