v3.26.3
Fair Value of Financial Instruments - Schedule of Reconciliations of Investments of Level 3 Inputs (Details) - Level 3 - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value balance, beginning $ 1,404,092 $ 1,140,859
Additions 31,198 166,572
Disposals and repayments of debt investments   (50,500)
Principal repayment (188) (188)
PIK receivable reclass (5,715)  
PIK income 8,220 5,801
Return of capital (862) (2,342)
Net change in unrealized appreciation, including unrealized foreign currency gain 91,407 91,888
Fair value balance, ending 1,528,152 1,352,090
Change in net unrealized appreciation on investments held 91,407 91,888
Senior Debt    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value balance, beginning 324,633 292,284
Additions 0 41,602
Disposals and repayments of debt investments   (15,000)
Principal repayment (188) (188)
PIK receivable reclass (468)  
PIK income 0 913
Return of capital 0 0
Net change in unrealized appreciation, including unrealized foreign currency gain (314) 182
Fair value balance, ending 323,663 319,793
Change in net unrealized appreciation on investments held (314) 182
Preferred equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value balance, beginning 81,285 61,155
Additions 0 7,855
Disposals and repayments of debt investments   0
Principal repayment 0 0
PIK receivable reclass (5,247)  
PIK income 8,220 4,888
Return of capital 0 0
Net change in unrealized appreciation, including unrealized foreign currency gain (1,466) 4,518
Fair value balance, ending 82,792 78,416
Change in net unrealized appreciation on investments held (1,466) 4,518
Common equity    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value balance, beginning 998,174 787,420
Additions 31,198 117,115
Disposals and repayments of debt investments   (35,500)
Principal repayment 0 0
PIK receivable reclass 0  
PIK income 0 0
Return of capital (862) (2,342)
Net change in unrealized appreciation, including unrealized foreign currency gain 93,187 87,188
Fair value balance, ending 1,121,697 953,881
Change in net unrealized appreciation on investments held $ 93,187 $ 87,188