v3.26.1
Fair Value of Financial Instruments - Net Change in Unrealized Gains or Losses on Investments for Which Level 3 Inputs were Used in Determining Fair Value (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) $ (10,891)   $ 24,035
Level 3      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) (55,615) $ (5,427)  
Level 3 | First-lien Debt Investments      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) (50,872) (2,959)  
Level 3 | Second-lien Debt Investments      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) (640) (2,486)  
Level 3 | Mezzanine Debt Investments      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) 367 (728)  
Level 3 | Equity and Other Investments      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) (4,470) $ 746  
Level 3 | Joint Venture Investments      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Net Unrealized Gain (Loss) $ 0