v3.26.1
Consolidated Schedule of Investments - Transactions Related to Investments - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Investment, Affiliated Issuer [Member]    
Schedule of Investments [Line Items]    
Investment Owned, Fair Value, Beginning Balance $ 26,994 $ 26,680
Gross Additions 369 2,291
Gross Reductions 0 0
Realized Gain (Loss) 0 0
Change in Unrealized Gain (Loss) (180) (2,213)
Investment Owned, Fair Value, Ending Balance 27,245 26,994
Interest/Dividend Income 440 1,714
SLR-AMI Topco Blocker, LLC    
Schedule of Investments [Line Items]    
Investment Owned, Fair Value, Beginning Balance 10,562 11,240
Gross Additions 118 1,339
Gross Reductions 0 0
Realized Gain (Loss) 0 0
Change in Unrealized Gain (Loss) (118) (2,017)
Investment Owned, Fair Value, Ending Balance 10,562 10,562
Interest/Dividend Income 0 0
Vapotherm, Inc.    
Schedule of Investments [Line Items]    
Investment Owned, Fair Value, Beginning Balance 5,033 4,993
Gross Additions 0 0
Gross Reductions 0 0
Realized Gain (Loss) 0 0
Change in Unrealized Gain (Loss) (20) (40)
Investment Owned, Fair Value, Ending Balance 5,033 5,033
Interest/Dividend Income 147 606
Veronica Holdings, LLC (common equity) [Member]    
Schedule of Investments [Line Items]    
Investment Owned, Fair Value, Beginning Balance 224 224
Gross Additions 0 0
Gross Reductions 0 0
Realized Gain (Loss) 0 0
Change in Unrealized Gain (Loss) 0 0
Investment Owned, Fair Value, Ending Balance 224 224
Interest/Dividend Income 0 0
Veronica Holdings, LLC (preferred equity) [Member]    
Schedule of Investments [Line Items]    
Investment Owned, Fair Value, Beginning Balance 11,175 10,223
Gross Additions 251 952
Gross Reductions 0 0
Realized Gain (Loss) 0 0
Change in Unrealized Gain (Loss) (42) (156)
Investment Owned, Fair Value, Ending Balance 11,426 11,175
Interest/Dividend Income $ 293 $ 1,108