v3.26.1
Fair Value of Financial Instruments - Changes in Level 3 Assets (Details) - Level 3 - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance $ 454,662 $ 518,698
Contributions/ Purchases 3,859 23,655
Paid in- kind dividends 7,446 5,338
Redemptions/ conversions (2,485) (15,205)
Realized gain/(loss) (9) 4,975
Unrealized gain/(loss) (17,875) (59,371)
Fair value, ending balance 445,598 478,090
Common stock    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 120,690 157,828
Contributions/ Purchases 1,500 0
Paid in- kind dividends 0 0
Redemptions/ conversions 0 (3,687)
Realized gain/(loss) (9) 1,511
Unrealized gain/(loss) (3,689) (29,180)
Fair value, ending balance 118,492 126,472
Convertible notes    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 11,994 20,846
Contributions/ Purchases 0 0
Paid in- kind dividends 0 0
Redemptions/ conversions 0 (7,001)
Realized gain/(loss) 0 0
Unrealized gain/(loss) 25 236
Fair value, ending balance 12,019 14,081
LLC interest    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 54,488 36,777
Contributions/ Purchases 0 22,345
Paid in- kind dividends 1,701 0
Redemptions/ conversions 0 (3,995)
Realized gain/(loss) 0 3,462
Unrealized gain/(loss) 1,089 (7,116)
Fair value, ending balance 57,278 51,473
LP interest    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 147,172 189,659
Contributions/ Purchases 1,398 1,310
Paid in- kind dividends 0 0
Redemptions/ conversions 0 0
Realized gain/(loss) 0 0
Unrealized gain/(loss) (15,923) (23,571)
Fair value, ending balance 132,647 167,398
Preferred Shares    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 73,388 69,895
Contributions/ Purchases 0 0
Paid in- kind dividends 2,890 2,824
Redemptions/ conversions (2,250) 0
Realized gain/(loss) 0 0
Unrealized gain/(loss) 0 0
Fair value, ending balance 74,028 72,719
Rights and warrants    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 4 0
Contributions/ Purchases 0 0
Paid in- kind dividends 0 0
Redemptions/ conversions 0 0
Realized gain/(loss) 0 0
Unrealized gain/(loss) 0 0
Fair value, ending balance 4 0
Senior loan    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value, beginning balance 46,926 43,693
Contributions/ Purchases 961 0
Paid in- kind dividends 2,855 2,514
Redemptions/ conversions (235) (522)
Realized gain/(loss) 0 2
Unrealized gain/(loss) 623 260
Fair value, ending balance $ 51,130 $ 45,947