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INVESTMENTS - Schedule of Contributed Capital and Unfunded Commitments (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Feb. 08, 2021
May 13, 2020
Schedule of Investments [Line Items]        
Total unfunded commitments $ 456,447 $ 388,772    
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 391 3,522    
Investment, Identifier [Axis]: AD Bidco, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,303 1,303    
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 3,289 3,289    
Investment, Identifier [Axis]: Accelevation LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,031 0    
Investment, Identifier [Axis]: Accelevation LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 609 0    
Investment, Identifier [Axis]: Accurus Aerospace Corporation, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 980 461    
Investment, Identifier [Axis]: Adhefin International, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 446 393    
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,443 2,443    
Investment, Identifier [Axis]: AirX Climate Solutions, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 814 814    
Investment, Identifier [Axis]: Aldinger Company, Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,609 0    
Investment, Identifier [Axis]: AlliA Insurance Brokers NV, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 48 259    
Investment, Identifier [Axis]: Americo Chemical Products, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 471 471    
Investment, Identifier [Axis]: Application Boot Camp LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 528 0    
Investment, Identifier [Axis]: Aquavista Watersides 2 LTD, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 2,182    
Investment, Identifier [Axis]: Arc Education, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,130 997    
Investment, Identifier [Axis]: Argus Bidco Limited, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 391 358    
Investment, Identifier [Axis]: Artemis Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 580 663    
Investment, Identifier [Axis]: Astra Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 185    
Investment, Identifier [Axis]: Avance Clinical Bidco Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,252 1,183    
Investment, Identifier [Axis]: Azalea Buyer, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 644    
Investment, Identifier [Axis]: Azalea Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 481 481    
Investment, Identifier [Axis]: BKF Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,970 2,970    
Investment, Identifier [Axis]: Basin Innovation Group, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,151 2,151    
Investment, Identifier [Axis]: Basin Innovation Group, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,858 1,858    
Investment, Identifier [Axis]: Beyond Risk Management, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,629 4,629    
Investment, Identifier [Axis]: Biolam Group, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 709 625    
Investment, Identifier [Axis]: BrightSign LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 509 244    
Investment, Identifier [Axis]: Brightpay Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 131    
Investment, Identifier [Axis]: Broadstone Group UK LTD, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,093 0    
Investment, Identifier [Axis]: CAi Software, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,261 1,261    
Investment, Identifier [Axis]: CCFF Buyer, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,396 1,396    
Investment, Identifier [Axis]: CCFF Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,047 1,047    
Investment, Identifier [Axis]: CGI Parent, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,653 1,653    
Investment, Identifier [Axis]: CH Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 55 0    
Investment, Identifier [Axis]: CSL DualCom, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 148    
Investment, Identifier [Axis]: CW Group Holdings, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 7,446 0    
Investment, Identifier [Axis]: Caldwell & Gregory LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,541 3,312    
Investment, Identifier [Axis]: Caldwell & Gregory LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,500 2,500    
Investment, Identifier [Axis]: Canadian Orthodontic Partners Corp., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 53 63    
Investment, Identifier [Axis]: Cascade Residential Services LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 99 629    
Investment, Identifier [Axis]: Cascade Residential Services LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 17 0    
Investment, Identifier [Axis]: Ceres Pharma NV, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 669 0    
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 461 407    
Investment, Identifier [Axis]: DAWGS Intermediate Holdings Co., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,888 0    
Investment, Identifier [Axis]: DISA Holdings Corp., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 343 429    
Investment, Identifier [Axis]: DataServ Integrations, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 481    
Investment, Identifier [Axis]: DecksDirect, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 360 34    
Investment, Identifier [Axis]: Discovery Buyer, L.P., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 7,216 0    
Investment, Identifier [Axis]: Discovery Buyer, L.P., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,793 0    
Investment, Identifier [Axis]: Dune Group, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 411    
Investment, Identifier [Axis]: EB Development, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 242 0    
Investment, Identifier [Axis]: EB Development, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 627 553    
Investment, Identifier [Axis]: EMI Porta Holdco LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,847 2,254    
Investment, Identifier [Axis]: EZ SMBO Bidco, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,375 0    
Investment, Identifier [Axis]: Eclipse Business Capital, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 12,909 12,636    
Investment, Identifier [Axis]: Electrical Components International, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 585 585    
Investment, Identifier [Axis]: Events Software BidCo Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 619 619    
Investment, Identifier [Axis]: Expert Institute Group Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,605 0    
Investment, Identifier [Axis]: Expert Institute Group Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,401 0    
Investment, Identifier [Axis]: Express Wash Acquisition Company, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 193 115    
Investment, Identifier [Axis]: Faraday, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 928    
Investment, Identifier [Axis]: Footco 40 Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 563 515    
Investment, Identifier [Axis]: Forest Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 298 298    
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 361    
Investment, Identifier [Axis]: Fortis Payment Systems, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 625    
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,312 2,312    
Investment, Identifier [Axis]: GB Eagle Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,447 2,316    
Investment, Identifier [Axis]: GCDL LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 108 108    
Investment, Identifier [Axis]: GCDL LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 108 108    
Investment, Identifier [Axis]: GPNZ II GmbH, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 65 49    
Investment, Identifier [Axis]: Global Academic Group Limited, Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 14 233    
Investment, Identifier [Axis]: Graphpad Software, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,093 2,093    
Investment, Identifier [Axis]: Graphpad Software, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 872 872    
Investment, Identifier [Axis]: Greenhill II BV, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 28    
Investment, Identifier [Axis]: Groupe Product Life, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 6,680 145    
Investment, Identifier [Axis]: HEKA Invest, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 611 539    
Investment, Identifier [Axis]: HS Advisory Buyer LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,868 0    
Investment, Identifier [Axis]: HS Advisory Buyer LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 600 0    
Investment, Identifier [Axis]: HSL Compliance, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,579 0    
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]: Haystack Holdings LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,086 0    
Investment, Identifier [Axis]: Haystack Holdings LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,416 0    
Investment, Identifier [Axis]: HeartHealth Bidco Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 174 164    
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 1,804    
Investment, Identifier [Axis]: HomeX Services Group LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 426 650    
Investment, Identifier [Axis]: HomeX Services Group LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 338 338    
Investment, Identifier [Axis]: Hydratech Holdings, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 162 1,725    
Investment, Identifier [Axis]: Hydratech Holdings, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 763 924    
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 1,031    
Investment, Identifier [Axis]: Ice House America, L.L.C., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 816 816    
Investment, Identifier [Axis]: Ice House America, L.L.C., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 63 257    
Investment, Identifier [Axis]: Interstellar Group B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 628 582    
Investment, Identifier [Axis]: InvoCare Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 291 275    
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 788 728    
Investment, Identifier [Axis]: Jones Fish Hatcheries & Distributors LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 418 418    
Investment, Identifier [Axis]: Keystone Bidco B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 67 185    
Investment, Identifier [Axis]: Keystone Bidco B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 42 28    
Investment, Identifier [Axis]: Kline Hill Partners LP, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,245 0    
Investment, Identifier [Axis]: Kline Hill Partners LP, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 898 0    
Investment, Identifier [Axis]: Lambir Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 102 402    
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 72 237    
Investment, Identifier [Axis]: Lattice Group Holdings Bidco Limited, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 35    
Investment, Identifier [Axis]: LeadsOnline, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,603 2,603    
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,024 0    
Investment, Identifier [Axis]: Lockmasters Security Intermediate, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 782 0    
Investment, Identifier [Axis]: MB Purchaser, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 99 773    
Investment, Identifier [Axis]: MB Purchaser, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 309 309    
Investment, Identifier [Axis]: MC Group Ventures Corporation, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 5,098 5,098    
Investment, Identifier [Axis]: MSI Express Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,429 0    
Investment, Identifier [Axis]: MSI Express Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,885 0    
Investment, Identifier [Axis]: Marmoutier Holding B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 23    
Investment, Identifier [Axis]: Marmoutier Holding B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 65    
Investment, Identifier [Axis]: Marmoutier Holding B.V., Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 66 0    
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 1        
Schedule of Investments [Line Items]        
Total unfunded commitments 391 635    
Investment, Identifier [Axis]: Media Recovery, Inc. (SpotSee), Revolver 2        
Schedule of Investments [Line Items]        
Total unfunded commitments 812 742    
Investment, Identifier [Axis]: Megawatt Acquisitionco, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 492 475    
Investment, Identifier [Axis]: Mercell Holding AS, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 776 691    
Investment, Identifier [Axis]: Modern Star Holdings Bidco Pty Limited, Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 936 884    
Investment, Identifier [Axis]: Momentum Textiles, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 923 0    
Investment, Identifier [Axis]: Moonlight Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 604 552    
Investment, Identifier [Axis]: NAW Buyer LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 5,729 5,729    
Investment, Identifier [Axis]: NAW Buyer LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,894 1,894    
Investment, Identifier [Axis]: NF Holdco, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 630 829    
Investment, Identifier [Axis]: NPM Investments 28 B.V., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 509 449    
Investment, Identifier [Axis]: Narda Acquisitionco., Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,311    
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]: Northstar Recycling, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,295 4,295    
Investment, Identifier [Axis]: Northstar Recycling, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,527 3,527    
Investment, Identifier [Axis]: OA Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 1,331    
Investment, Identifier [Axis]: OAC Holdings I Corp, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 646 1,370    
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,857 4,276    
Investment, Identifier [Axis]: OSP Hamilton Purchaser, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 444 666    
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 715 0    
Investment, Identifier [Axis]: Owl Intermediate Holdings, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,839 0    
Investment, Identifier [Axis]: PDQ.Com Corporation, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,994 5,226    
Investment, Identifier [Axis]: PSP Intermediate 4, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 193    
Investment, Identifier [Axis]: Parkview Dental Holdings LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 328    
Investment, Identifier [Axis]: Polara Enterprises, L.L.C., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 720 545    
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,735 4,946    
Investment, Identifier [Axis]: PowerGEM Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,579 2,579    
Investment, Identifier [Axis]: Premium Invest, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,819 1,605    
Investment, Identifier [Axis]: Pro-Vision Solutions Holdings, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,828 2,077    
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 468 935    
Investment, Identifier [Axis]: Process Insights Acquisition, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 437 104    
Investment, Identifier [Axis]: ProfitOptics, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 306 242    
Investment, Identifier [Axis]: Qualified Industries, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 242 242    
Investment, Identifier [Axis]: R1 Holdings, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 219 1,601    
Investment, Identifier [Axis]: RKD Group, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,645 0    
Investment, Identifier [Axis]: RKD Group, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,135 0    
Investment, Identifier [Axis]: ROI Solutions LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,506 3,506    
Investment, Identifier [Axis]: ROI Solutions LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,138 3,138    
Investment, Identifier [Axis]: RPX Corporation, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,024 3,024    
Investment, Identifier [Axis]: Randys Holdings, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,307 2,399    
Investment, Identifier [Axis]: Randys Holdings, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 719 1,231    
Investment, Identifier [Axis]: Rapid Buyer LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,956 2,956    
Investment, Identifier [Axis]: Rapid Buyer LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,478 1,478    
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,887 0    
Investment, Identifier [Axis]: Real Chemistry Intermediate III, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,366 0    
Investment, Identifier [Axis]: Rocade Holdings LLC        
Schedule of Investments [Line Items]        
Total unfunded commitments 14,000      
Investment, Identifier [Axis]: Rocade Holdings LLC, Preferred Equity        
Schedule of Investments [Line Items]        
Total unfunded commitments 14,000 14,000    
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, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,631 1,748    
Investment, Identifier [Axis]: Ruffalo Noel Levitz, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 288 0    
Investment, Identifier [Axis]: SBP Holdings LP, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 7,905 7,905    
Investment, Identifier [Axis]: SBP Holdings LP, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,250 3,250    
Investment, Identifier [Axis]: SCP Medical Products, LLC., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 426 0    
Investment, Identifier [Axis]: SISU ACQUISITIONCO., INC., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 503    
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,359 1,453    
Investment, Identifier [Axis]: SPATCO Energy Solutions, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,188 1,188    
Investment, Identifier [Axis]: SSCP Pegasus Midco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 541 2,226    
Investment, Identifier [Axis]: SVI International LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 17 74    
Investment, Identifier [Axis]: SVI International LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 35 74    
Investment, Identifier [Axis]: Saab Purchaser, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 4,787 4,787    
Investment, Identifier [Axis]: Saab Purchaser, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,862 2,394    
Investment, Identifier [Axis]: Sanoptis S.A.R.L., Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,785 2,456    
Investment, Identifier [Axis]: Sansidor BV, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 121 396    
Investment, Identifier [Axis]: Scout Bidco B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 680 999    
Investment, Identifier [Axis]: Screenvision, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 613 0    
Investment, Identifier [Axis]: Security Holdings B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 822 1,916    
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 509 449    
Investment, Identifier [Axis]: Skyvault Holdings LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 6,611 15,164    
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 1,197 1,463    
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 232    
Investment, Identifier [Axis]: Sparus Holdings, LLC (f/k/a Sparus Holdings, Inc.), Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 156 156    
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 3,792 4,085    
Investment, Identifier [Axis]: Superjet Buyer, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,432 2,432    
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 5,455 0    
Investment, Identifier [Axis]: Swoop Intermediate III, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,818 0    
Investment, Identifier [Axis]: TAPCO Buyer LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 8,016 8,016    
Investment, Identifier [Axis]: TAPCO Buyer LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,915 2,915    
Investment, Identifier [Axis]: THG Acquisition, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,226 2,299    
Investment, Identifier [Axis]: THG Acquisition, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,401 1,401    
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 10,359 11,751    
Investment, Identifier [Axis]: TSYL Corporate Buyer, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 443 443    
Investment, Identifier [Axis]: Tank Holding Corp, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 0 139    
Investment, Identifier [Axis]: Tank Holding Corp, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 873 873    
Investment, Identifier [Axis]: Tanqueray Bidco Limited, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,239 1,133    
Investment, Identifier [Axis]: Technology Service Stream BidCo Pty Ltd, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 166 233    
Investment, Identifier [Axis]: Techone B.V., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 558 492    
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 8,486 0    
Investment, Identifier [Axis]: Tencarva Machinery Company, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,103 1,470    
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 8,811 0    
Investment, Identifier [Axis]: The Caprock Group, Inc. (aka TA/TCG Holdings, LLC), Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,261 827    
Investment, Identifier [Axis]: Thompson Rivers LLC        
Schedule of Investments [Line Items]        
Total contributed capital       $ 75,000
Investment company, dividend reinvestment 4,400 4,400    
Investment, Identifier [Axis]: Thompsonn Rivers LLC        
Schedule of Investments [Line Items]        
Total contributed capital 79,411 79,411    
Total unfunded commitments 0 0    
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]: Trintech, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 383 383    
Investment, Identifier [Axis]: UBC Ledgers Holding AB, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 113 234    
Investment, Identifier [Axis]: UHY Advisors, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 8,665 13,247    
Investment, Identifier [Axis]: UHY Advisors, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,506 3,507    
Investment, Identifier [Axis]: Union Bidco Limited, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 6 66    
Investment, Identifier [Axis]: United Therapy Holding III GmbH, Capex / Acquisition Facility        
Schedule of Investments [Line Items]        
Total unfunded commitments 726 641    
Investment, Identifier [Axis]: Unither (Uniholding), Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 509 449    
Investment, Identifier [Axis]: Unosquare, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,806 0    
Investment, Identifier [Axis]: Unosquare, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,361 0    
Investment, Identifier [Axis]: WEST-NR ACQUISITIONCO, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 13,978 14,420    
Investment, Identifier [Axis]: WWEC Holdings III Corp, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,484 2,484    
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]: Whitcraft Holdings, Inc., Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,708 2,912    
Investment, Identifier [Axis]: Whitcraft Holdings, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,534 893    
Investment, Identifier [Axis]: White Bidco Limited, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 514 515    
Investment, Identifier [Axis]: Woodland Foods, LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,559 0    
Investment, Identifier [Axis]: Woodland Foods, LLC, Line of Credit        
Schedule of Investments [Line Items]        
Total unfunded commitments 2,246 1,177    
Investment, Identifier [Axis]: World 50, Inc., Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 973 973    
Investment, Identifier [Axis]: ZB Holdco LLC, Delayed Draw Term Loan        
Schedule of Investments [Line Items]        
Total unfunded commitments 3,171 0    
Investment, Identifier [Axis]: ZB Holdco LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments 1,091 338    
Investment, Identifier [Axis]: eShipping, LLC, Revolver        
Schedule of Investments [Line Items]        
Total unfunded commitments $ 1,486 $ 1,486