v3.26.1
Commitments and Contingencies - Summary of Unfunded Debt and Equity Commitments (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Other Commitments [Line Items]    
Unfunded commitments $ 406,507 $ 394,096
Unfunded Debt and Equity Commitments [Member]    
Other Commitments [Line Items]    
Unfunded commitments 406,507 394,096
Unfunded Debt and Equity Commitments [Member] | SLR Credit Solutions [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 44,263 44,263
Unfunded Debt and Equity Commitments [Member] | Ardelyx, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 29,272 29,272
Unfunded Debt and Equity Commitments [Member] | Wilbur-Ellis Holdings II, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 26,626 26,376
Unfunded Debt and Equity Commitments [Member] | Treace Medical Concepts, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 24,332 24,332
Unfunded Debt and Equity Commitments [Member] | Infillion Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 20,196 16,774
Unfunded Debt and Equity Commitments [Member] | SLR Business Credit [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 20,000 20,000
Unfunded Debt and Equity Commitments [Member] | SLR Healthcare ABL [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 18,700 18,700
Unfunded Debt and Equity Commitments [Member] | Lyneer Staffing Solutions, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 18,502 16,000
Unfunded Debt and Equity Commitments [Member] | SLR Equipment Finance [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 14,500 9,500
Unfunded Debt and Equity Commitments [Member] | BDG Media, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 12,997 10,946
Unfunded Debt and Equity Commitments [Member] | ReFocus Management Services LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 12,053 0
Unfunded Debt and Equity Commitments [Member] | OIS Management Services, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 11,416 11,416
Unfunded Debt and Equity Commitments [Member] | Southern Lifting and Hoisting, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 11,399 10,115
Unfunded Debt and Equity Commitments [Member] | Stella & Chewy's, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 10,962 9,248
Unfunded Debt and Equity Commitments [Member] | Copper River Seafoods, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 10,534 10,803
Unfunded Debt and Equity Commitments [Member] | DeepIntent, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 10,402 9,777
Unfunded Debt and Equity Commitments [Member] | Western Veterinary Partners LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 9,177 21,179
Unfunded Debt and Equity Commitments [Member] | SunMed Receivables I, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 7,623 7,623
Unfunded Debt and Equity Commitments [Member] | Quantcast Corporation [Member]    
Other Commitments [Line Items]    
Unfunded commitments 7,497 6,275
Unfunded Debt and Equity Commitments [Member] | Velocity One, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 7,250 7,250
Unfunded Debt and Equity Commitments [Member] | Arcutis Biotherapeutics, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 6,329 12,658
Unfunded Debt and Equity Commitments [Member] | WMD Funding LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,893 6,191
Unfunded Debt and Equity Commitments [Member] | Sightly Enterprises, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,628 5,651
Unfunded Debt and Equity Commitments [Member] | The Townsend Company, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,402 5,755
Unfunded Debt and Equity Commitments [Member] | Southern Transport LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,381 6,062
Unfunded Debt and Equity Commitments [Member] | Pinnacle Fertility, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,280 5,280
Unfunded Debt and Equity Commitments [Member] | Alkeme Intermediary Holdings, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,000 0
Unfunded Debt and Equity Commitments [Member] | One Touch Direct, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 4,827 3,544
Unfunded Debt and Equity Commitments [Member] | SPAR Marketing Force, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 4,456 7,665
Unfunded Debt and Equity Commitments [Member] | iCIMS, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,823 2,945
Unfunded Debt and Equity Commitments [Member] | Streamland Media Holdings LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,561 3,659
Unfunded Debt and Equity Commitments [Member] | Sherwood Management Co., Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,162 5,100
Unfunded Debt and Equity Commitments [Member] | Plastic Management, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,128 3,128
Unfunded Debt and Equity Commitments [Member] | 33 Across Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2,944 2,418
Unfunded Debt and Equity Commitments [Member] | Southern Orthodontic Partners Management LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2,314 0
Unfunded Debt and Equity Commitments [Member] | SLR Senior Lending Program LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 2,125 2,125
Unfunded Debt and Equity Commitments [Member] | United Digestive MSO Parent, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,927 1,927
Unfunded Debt and Equity Commitments [Member] | Bayside Opco, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,721 2,093
Unfunded Debt and Equity Commitments [Member] | SunMed Group Holdings, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,621 1,621
Unfunded Debt and Equity Commitments [Member] | Omniguide Holdings, Inc [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,190 0
Unfunded Debt and Equity Commitments [Member] | Tilley Distribution, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,007 1,007
Unfunded Debt and Equity Commitments [Member] | EyeSouth Eye Care Holdco LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 959 1,279
Unfunded Debt and Equity Commitments [Member] | CC SAG Holdings Corp. (Spectrum Automotive) [Member]    
Other Commitments [Line Items]    
Unfunded commitments 548 548
Unfunded Debt and Equity Commitments [Member] | TAUC Management, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 294 294
Unfunded Debt and Equity Commitments [Member] | Shoes for Crews Global, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 284 284
Unfunded Debt and Equity Commitments [Member] | All States Ag Parts, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2 102
Unfunded Debt and Equity Commitments [Member] | WALCO Funding, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments $ 0 $ 2,911
[1] The Company controls the funding of these commitments and may cancel them at its discretion.