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INVESTMENTS - Schedule of Contributed Capital and Unfunded Commitments (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Feb. 08, 2021
May 13, 2020
Schedule of Investments [Line Items]        
Total unfunded commitments $ 279,672 $ 305,903    
All Member Of Waccamaw River LLC        
Schedule of Investments [Line Items]        
Total contributed capital 125,000      
Affiliated Entity | Thompson Rivers LLC        
Schedule of Investments [Line Items]        
Investment company, dividend reinvestment 32,100 162,100    
Affiliated Entity | Waccamaw River, LLC | All Member Of Waccamaw River LLC        
Schedule of Investments [Line Items]        
Contributed capital by related parties 82,000 82,000    
Investment, Identifier [Axis]: AD Bidco, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,522 0    
Investment, Identifier [Axis]: AD Bidco, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,303 0    
Investment, Identifier [Axis]: ASC Communications, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,089 1,089    
Investment, Identifier [Axis]: ATL II MRO Holdings, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,667 1,667    
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 461 634    
Investment, Identifier [Axis]: Adhefin International, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 407 419    
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,179 1,179    
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 276 482    
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,191 1,634    
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 471 471    
Investment, Identifier [Axis]: Amtech LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 436    
Investment, Identifier [Axis]: Anju Software, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 321 343    
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,202 2,221    
Investment, Identifier [Axis]: Arc Education, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,253 1,291    
Investment, Identifier [Axis]: Argus Bidco Limited, CAF Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 373 541    
Investment, Identifier [Axis]: Astra Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 284 604    
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,276 1,304    
Investment, Identifier [Axis]: Azalea Buyer, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 644 644    
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 481 481    
Investment, Identifier [Axis]: Beyond Risk Management, Inc., Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,007    
Investment, Identifier [Axis]: Beyond Risk Management, Inc., Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,629 0    
Investment, Identifier [Axis]: Biolam Group, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 647 667    
Investment, Identifier [Axis]: Bounteous, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,840    
Investment, Identifier [Axis]: BrightSign LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 266 443    
Investment, Identifier [Axis]: Brightpay Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 136 140    
Investment, Identifier [Axis]: CAi Software, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,523 943    
Investment, Identifier [Axis]: CCFF Buyer, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,490 0    
Investment, Identifier [Axis]: CCFF Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,047 0    
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,653 1,653    
Investment, Identifier [Axis]: CSL Dualcom, Capex / Acquisition Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 149 150    
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 113 0    
Investment, Identifier [Axis]: Cascade Residential Services LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,390 1,985    
Investment, Identifier [Axis]: Cascade Residential Services LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 265 331    
Investment, Identifier [Axis]: Catawba River Limited, Structured Junior Note        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 13,971    
Investment, Identifier [Axis]: Classic Collision (Summit Buyer, LLC), Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,734    
Investment, Identifier [Axis]: Comply365, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,101 1,101    
Investment, Identifier [Axis]: Coyo Uprising GmbH, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 421 434    
Investment, Identifier [Axis]: DISA Holdings Corp., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,072    
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 429 339    
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 481 481    
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 34 381    
Investment, Identifier [Axis]: Dune Group, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 425 439    
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,729 403    
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 14,364 17,182    
Investment, Identifier [Axis]: Electrical Components International, Inc, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 585 0    
Investment, Identifier [Axis]: Eurofins Digital Testing International LUX Holding SARL, Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,650 2,731    
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 620 620    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 115 115    
Investment, Identifier [Axis]: Faraday, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 960 990    
Investment, Identifier [Axis]: Finexvet, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 650    
Investment, Identifier [Axis]: Footco 40 Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 519 524    
Investment, Identifier [Axis]: Forest Buyer, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 496 0    
Investment, Identifier [Axis]: Forest Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 298 0    
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 663 0    
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 625 0    
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,581 2,581    
Investment, Identifier [Axis]: GPNZ II GmbH, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 51 0    
Investment, Identifier [Axis]: GPNZ II GmbH, Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 53    
Investment, Identifier [Axis]: Global Academic Group Limited, Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 398 414    
Investment, Identifier [Axis]: Graphpad Software, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,326 0    
Investment, Identifier [Axis]: Graphpad Software, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 872 0    
Investment, Identifier [Axis]: Greenhill II BV, Capex Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 53 120    
Investment, Identifier [Axis]: Groupe Product Life, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 263 0    
Investment, Identifier [Axis]: Gusto Aus BidCo Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 163 167    
Investment, Identifier [Axis]: HEKA Invest, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 558 575    
Investment, Identifier [Axis]: HTI Technology & Industries, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,045 2,045    
Investment, Identifier [Axis]: HTI Technology & Industries, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,364 1,364    
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 230 253    
Investment, Identifier [Axis]: Heavy Construction Systems Specialists, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,632 2,632    
Investment, Identifier [Axis]: HemaSource, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,804 1,421    
Investment, Identifier [Axis]: HomeX Services Group, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 785 845    
Investment, Identifier [Axis]: HomeX Services Group, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 338 338    
Investment, Identifier [Axis]: INOS 19-090 GmbH, Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,872    
Investment, Identifier [Axis]: ISTO Technologies II, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 714 714    
Investment, Identifier [Axis]: ITI Intermodal, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,031 1,157    
Investment, Identifier [Axis]: Ice House America, L.L.C., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 165 0    
Investment, Identifier [Axis]: Ice House America, L.L.C., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 212 0    
Investment, Identifier [Axis]: Innovad Group II BV, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 266    
Investment, Identifier [Axis]: Interstellar Group B.V., Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 602 620    
Investment, Identifier [Axis]: Interstellar Group B.V., Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 57    
Investment, Identifier [Axis]: InvoCare Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 378 387    
Investment, Identifier [Axis]: Isolstar Holding NV (IPCOM), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 170 656    
Investment, Identifier [Axis]: Jocassee Partners LLC        
Schedule of Investments [Line Items]        
Total contributed capital 35,000 35,000    
Total unfunded commitments 65,000 65,000    
Investment, Identifier [Axis]: Jocassee Partners LLC | All Members Of Jocassee Partners LLC        
Schedule of Investments [Line Items]        
Total contributed capital 385,000 385,000    
Total unfunded commitments 215,000 215,000    
Investment, Identifier [Axis]: Jocassee Partners LLC, Joint Venture        
Schedule of Investments [Line Items]        
Total unfunded commitments 65,000 65,000    
Investment, Identifier [Axis]: Jon Bidco Limited, Capex & Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,083 1,125    
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 418 418    
Investment, Identifier [Axis]: Kano Laboratories LLC, Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 153    
Investment, Identifier [Axis]: Kano Laboratories LLC, Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,830    
Investment, Identifier [Axis]: Lambir Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 608 626    
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 237 255    
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 18    
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,603 2,187    
Investment, Identifier [Axis]: Lifestyle Intermediate II, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,500    
Investment, Identifier [Axis]: MB Purchaser, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,391 0    
Investment, Identifier [Axis]: MB Purchaser, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 309 0    
Investment, Identifier [Axis]: MC Group Ventures Corporation, Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 276 276    
Investment, Identifier [Axis]: MC Group Ventures Corporation, Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,822 0    
Investment, Identifier [Axis]: Marmoutier Holding B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 24 18    
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 107 109    
Investment, Identifier [Axis]: Marshall Excelsior Co., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 55 221    
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 525 0    
Investment, Identifier [Axis]: Mercell Holding AS, Capex Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 737 773    
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited, Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 954 974    
Investment, Identifier [Axis]: Moonlight Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 557 562    
Investment, Identifier [Axis]: NAW Buyer LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 5,876 5,876    
Investment, Identifier [Axis]: NAW Buyer LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,894 1,515    
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 663 663    
Investment, Identifier [Axis]: NPM Investments 28 BV, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 464 479    
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,311 1,311    
Investment, Identifier [Axis]: NeoxCo, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 482 497    
Investment, Identifier [Axis]: Next HoldCo, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,891 1,891    
Investment, Identifier [Axis]: Next HoldCo, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 733 733    
Investment, Identifier [Axis]: Novotech Aus Bidco Pty Ltd, Capex & Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 809    
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,220 1,331    
Investment, Identifier [Axis]: OAC Holdings I Corp, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,057 1,370    
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,426 5,345    
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,109 1,109    
Investment, Identifier [Axis]: PDQ.Com Corporation, Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,970 1,970    
Investment, Identifier [Axis]: PDQ.Com Corporation, Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,256 4,807    
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 200 206    
Investment, Identifier [Axis]: Parkview Dental Holdings, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 328 328    
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 545 545    
Investment, Identifier [Axis]: Premium Invest, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,661 1,712    
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 935 935    
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,014    
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 710 0    
Investment, Identifier [Axis]: ProfitOptics, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 121 210    
Investment, Identifier [Axis]: Protego Bidco B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 504 656    
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 242 242    
Investment, Identifier [Axis]: R1 Holdings, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,682 1,682    
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,947 1,947    
Investment, Identifier [Axis]: RA Outdoors, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 438    
Investment, Identifier [Axis]: REP SEKO MERGER SUB LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 209 0    
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 3,333    
Investment, Identifier [Axis]: Randys Holdings, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,785 3,412    
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,515 1,326    
Investment, Identifier [Axis]: Rhondda Financing No. 1 DAC, Structured Junior Note        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 4,707    
Investment, Identifier [Axis]: Rocade Holdings LLC        
Schedule of Investments [Line Items]        
Total unfunded commitments 17,500      
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Total unfunded commitments 17,500 17,500    
Investment, Identifier [Axis]: Rock Labor, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,103 1,103    
Investment, Identifier [Axis]: Royal Buyer, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 315 922    
Investment, Identifier [Axis]: Royal Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,748 1,340    
Investment, Identifier [Axis]: SBP Holdings LP, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 151    
Investment, Identifier [Axis]: SBP Holdings LP, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 781 1,065    
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 503 1,007    
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,614 4,119    
Investment, Identifier [Axis]: SVI International LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 74 0    
Investment, Identifier [Axis]: SVI International LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 74 0    
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Acquisition Capex Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 16    
Investment, Identifier [Axis]: Sanoptis S.A.R.L., CAF Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,458    
Investment, Identifier [Axis]: Scaled Agile, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 179 280    
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 621 640    
Investment, Identifier [Axis]: Security Holdings B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,143 2,209    
Investment, Identifier [Axis]: Security Holdings B.V., Revolver 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,072 1,105    
Investment, Identifier [Axis]: Sierra Senior Loan Strategy JV LLC (Sierra JV)        
Schedule of Investments [Line Items]        
Total contributed capital 110,100      
Investment, Identifier [Axis]: Sinari Invest, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 599 617    
Investment, Identifier [Axis]: SmartShift Group, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,440 3,440    
Investment, Identifier [Axis]: SmartShift Group, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,651 1,651    
Investment, Identifier [Axis]: Smartling, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,176 1,176    
Investment, Identifier [Axis]: Solo Buyer, L.P., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,596 1,330    
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 231 399    
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 156 90    
Investment, Identifier [Axis]: Spatial Business Systems LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,875 1,875    
Investment, Identifier [Axis]: Spatial Business Systems LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,406 1,406    
Investment, Identifier [Axis]: Superjet Buyer, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,732 0    
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,432 1,369    
Investment, Identifier [Axis]: Syntax Systems Ltd, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 391    
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,244 2,244    
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 239 1,469    
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 642 642    
Investment, Identifier [Axis]: Tank Holding Corp, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 509 614    
Investment, Identifier [Axis]: Tank Holding Corp, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 873 640    
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Capex Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,143 1,153    
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 251 0    
Investment, Identifier [Axis]: Techone B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 509 315    
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,470 1,129    
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,825    
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 827 827    
Investment, Identifier [Axis]: The Cleaver-Brooks Company, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 3,229    
Investment, Identifier [Axis]: The Hilb Group, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 313    
Investment, Identifier [Axis]: Thompson Rivers LLC        
Schedule of Investments [Line Items]        
Total contributed capital       $ 75,000
Investment, Identifier [Axis]: Thompsonn Rivers LLC        
Schedule of Investments [Line Items]        
Total contributed capital 79,411 79,411    
Total unfunded commitments 0 0    
Investment company, dividend reinvestment 4,400 4,400    
Investment, Identifier [Axis]: Thompsonn Rivers LLC | All Members Of Thompson Rivers LLC        
Schedule of Investments [Line Items]        
Total contributed capital 482,083 482,083    
Total unfunded commitments 0 0    
Investment, Identifier [Axis]: Trader Corporation, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 342 354    
Investment, Identifier [Axis]: Trintech, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 383 383    
Investment, Identifier [Axis]: Turbo Buyer, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,350    
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 799 840    
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 278    
Investment, Identifier [Axis]: USLS Acquisition, Inc.(f/k/a US Legal Support, Inc.), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,407 2,540    
Investment, Identifier [Axis]: Union Bidco Limited, Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 82 83    
Investment, Identifier [Axis]: United Therapy Holding III GmbH, Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 663 683    
Investment, Identifier [Axis]: Unither (Uniholding), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 465 479    
Investment, Identifier [Axis]: WWEC Holdings III Corp, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,484 2,019    
Investment, Identifier [Axis]: Waccamaw River LLC        
Schedule of Investments [Line Items]        
Total contributed capital 30,280 30,280 $ 25,000  
Total unfunded commitments 0 0    
Investment, Identifier [Axis]: Waccamaw River LLC | All Member Of Waccamaw River LLC        
Schedule of Investments [Line Items]        
Total contributed capital 139,020 139,020    
Total unfunded commitments 0 0    
Investment, Identifier [Axis]: West-NR AcquisitionCo., LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,500 2,500    
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,081 0    
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 742 1,760    
Investment, Identifier [Axis]: White Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 514 514    
Investment, Identifier [Axis]: Woodland Foods, Inc., Line of Credit        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,065 680    
Investment, Identifier [Axis]: World 50, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 973 0    
Investment, Identifier [Axis]: Xeinadin Bidco Limited, CAF Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,573 2,704    
Investment, Identifier [Axis]: ZB Holdco LLC, Delayed Draw Term Loan 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,932    
Investment, Identifier [Axis]: ZB Holdco LLC, Delayed Draw Term Loan 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 410 0    
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 575 845    
Investment, Identifier [Axis]: Zeppelin Bidco Limited, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,667    
Investment, Identifier [Axis]: eShipping, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments $ 1,486 $ 1,486