Quarterly report [Sections 13 or 15(d)]

Fair Value of Financial Instruments - Schedule of Equity Investments (Details)

v3.25.3
Fair Value of Financial Instruments - Schedule of Equity Investments (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]        
Total net change in unrealized appreciation (depreciation) $ 32,989 $ (13,894) $ 55,214 $ (44,982)
Significant Unobservable Inputs (Level 3) | Debt investments        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]        
Total net change in unrealized appreciation (depreciation)     17,300 (32,300)
Significant Unobservable Inputs (Level 3) | Preferred stock        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]        
Total net change in unrealized appreciation (depreciation)     (6,300) (9,200)
Significant Unobservable Inputs (Level 3) | Common stock        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]        
Total net change in unrealized appreciation (depreciation)     (2,500) (300)
Significant Unobservable Inputs (Level 3) | Warrant investments        
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]        
Total net change in unrealized appreciation (depreciation)     $ 1,600 $ (800)