SLR Senior Lending Program LLC - Summary financial information for SSLP (Parenthetical) (Details) - USD ($) $ in Thousands |
Sep. 30, 2025 |
Dec. 31, 2024 |
|||
|---|---|---|---|---|---|
| Condensed Financial Statements, Captions [Line Items] | |||||
| Cost | $ 2,138,238 | $ 2,039,566 | [1] | ||
| Debt instrument, face amount | 1,147,436 | 1,041,093 | |||
| Debt issuance costs | 8,474 | 9,399 | |||
| SLR Senior Lending Program LLC [Member] | |||||
| Condensed Financial Statements, Captions [Line Items] | |||||
| Cost | 186,403 | 177,236 | |||
| Debt instrument, face amount | 112,500 | 96,600 | |||
| Debt issuance costs | $ 1,194 | $ 1,572 | |||
| |||||