v3.25.3
Commitments and Contingencies - Summary of Unfunded Debt and Equity Commitments (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Other Commitments [Line Items]    
Unfunded commitments $ 408,424 $ 234,554
Unfunded Debt and Equity Commitments [Member]    
Other Commitments [Line Items]    
Unfunded commitments 408,424 234,554
Unfunded Debt and Equity Commitments [Member] | Cogent Biosciences, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 56,150 0
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 6,648
Unfunded Debt and Equity Commitments [Member] | Lyneer Staffing Solutions, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 25,943 0
Unfunded Debt and Equity Commitments [Member] | OIS Management Services, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 20,882 0
Unfunded Debt and Equity Commitments [Member] | Infillion Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 20,712 0
Unfunded Debt and Equity Commitments [Member] | SLR Business Credit [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 20,000 8,000
Unfunded Debt and Equity Commitments [Member] | SLR Healthcare ABL [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 15,200 10,000
Unfunded Debt and Equity Commitments [Member] | Wilbur-Ellis Holdings II, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 14,602 0
Unfunded Debt and Equity Commitments [Member] | Arcutis Biotherapeutics, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 12,658 12,658
Unfunded Debt and Equity Commitments [Member] | BDG Media, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 11,661 11,751
Unfunded Debt and Equity Commitments [Member] | Stella & Chewy's, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 10,765 0
Unfunded Debt and Equity Commitments [Member] | SLR Equipment Finance [Member]    
Other Commitments [Line Items]    
Unfunded commitments [1] 10,500 3,000
Unfunded Debt and Equity Commitments [Member] | DeepIntent, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 10,358 7,254
Unfunded Debt and Equity Commitments [Member] | WALCO Funding, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 8,733 0
Unfunded Debt and Equity Commitments [Member] | Velocity One, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 7,250 0
Unfunded Debt and Equity Commitments [Member] | United Digestive MSO Parent, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 6,554 7,496
Unfunded Debt and Equity Commitments [Member] | WMD Funding LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 6,368 7,243
Unfunded Debt and Equity Commitments [Member] | Quantcast Corporation [Member]    
Other Commitments [Line Items]    
Unfunded commitments 6,110 4,071
Unfunded Debt and Equity Commitments [Member] | The Townsend Company, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,568 7,923
Unfunded Debt and Equity Commitments [Member] | Plastic Management, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,397 10,806
Unfunded Debt and Equity Commitments [Member] | Pinnacle Fertility, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 5,280 0
Unfunded Debt and Equity Commitments [Member] | 33 Across Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 4,848 4,226
Unfunded Debt and Equity Commitments [Member] | Copper River Seafoods, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 4,547 6,912
Unfunded Debt and Equity Commitments [Member] | One Touch Direct, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 4,306 7,970
Unfunded Debt and Equity Commitments [Member] | Sightly Enterprises, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,691 2,687
Unfunded Debt and Equity Commitments [Member] | SPR Therapeutics, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,650 6,083
Unfunded Debt and Equity Commitments [Member] | Streamland Media Holdings LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,285 0
Unfunded Debt and Equity Commitments [Member] | iCIMS, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,160 3,530
Unfunded Debt and Equity Commitments [Member] | CVAUSA Management, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,151 10,164
Unfunded Debt and Equity Commitments [Member] | Southern Lifting and Hoisting, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 3,064 0
Unfunded Debt and Equity Commitments [Member] | Sherwood Management Co., Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2,602 0
Unfunded Debt and Equity Commitments [Member] | Western Veterinary Partners LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2,145 18,245
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] | Bayside Opco, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2,093 2,093
Unfunded Debt and Equity Commitments [Member] | Southern Transport LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 2,092 0
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] | SPAR Marketing Force, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,600 5,449
Unfunded Debt and Equity Commitments [Member] | EyeSouth Eye Care Holdco LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,279 1,279
Unfunded Debt and Equity Commitments [Member] | Tilley Distribution, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 1,007 1,158
Unfunded Debt and Equity Commitments [Member] | Urology Management Holdings, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 863 863
Unfunded Debt and Equity Commitments [Member] | NS and Associates LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 727 0
Unfunded Debt and Equity Commitments [Member] | High Street Buyer, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 629 631
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] | Omniguide Holdings, Inc [Member]    
Other Commitments [Line Items]    
Unfunded commitments 350 0
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 237 331
Unfunded Debt and Equity Commitments [Member] | Pasadena Private Lending Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 0 8,369
Unfunded Debt and Equity Commitments [Member] | Foundation Consumer Brands, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 0 3,009
Unfunded Debt and Equity Commitments [Member] | Erie Construction Mid-west, LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments 0 2,403
Unfunded Debt and Equity Commitments [Member] | Kaseya, Inc. [Member]    
Other Commitments [Line Items]    
Unfunded commitments 0 1,917
Unfunded Debt and Equity Commitments [Member] | RxSense Holdings LLC [Member]    
Other Commitments [Line Items]    
Unfunded commitments $ 0 $ 1,250
[1] The Company controls the funding of these commitments and may cancel them at its discretion.