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 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss)     $ 40,875   $ 215,788
Level 3          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss) $ 11,156 $ 147,141 (163,004) $ 166,996  
Level 3 | First-lien Debt Investments          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss) 1,266 140,705 (143,350) 154,408  
Level 3 | Second-lien Debt Investments          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss) (220) 699 (1,682) 1,105  
Level 3 | Mezzanine Debt Investments          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss) (1,282) 935 (4,684) 2,499  
Level 3 | Equity Investments          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss) 10,171 $ 4,802 (14,509) $ 8,984  
Level 3 | Joint Venture Investments          
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]          
Net Unrealized Gain (Loss) $ 1,221   $ 1,221