Quarterly report [Sections 13 or 15(d)]

Investments - Schedule of Investment Interest Income and Fee Income (Details)

v3.25.3
Investments - Schedule of Investment Interest Income and Fee Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Schedule Of Investments [Line Items]        
Total interest and dividend income, excluding PIK interest income $ 131,157 $ 119,050 $ 376,300 $ 352,358
Total fee income 6,936 6,198 18,763 19,449
Contractual interest income        
Schedule Of Investments [Line Items]        
Total interest and dividend income, excluding PIK interest income 97,533 90,288 280,771 268,441
Exit fee interest income        
Schedule Of Investments [Line Items]        
Total interest and dividend income, excluding PIK interest income 14,246 12,047 39,264 34,519
PIK interest income        
Schedule Of Investments [Line Items]        
Total interest and dividend income, excluding PIK interest income 14,475 12,706 41,583 37,870
Dividend income        
Schedule Of Investments [Line Items]        
Total interest and dividend income, excluding PIK interest income 2,100 2,100 6,600 5,800
Other investment income        
Schedule Of Investments [Line Items]        
Total interest and dividend income, excluding PIK interest income 2,803 1,909 8,082 5,728
Recurring fee income        
Schedule Of Investments [Line Items]        
Total fee income 2,945 2,423 8,379 7,081
Fee income - expired commitments        
Schedule Of Investments [Line Items]        
Total fee income 454 413 1,486 1,790
Accelerated fee income - early repayments        
Schedule Of Investments [Line Items]        
Total fee income $ 3,537 $ 3,362 $ 8,898 $ 10,578