v3.26.1
Share Data and Net Assets - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings (loss) per common share — basic and diluted:        
Net increase (decrease) in net assets resulting from operations $ 30,940 $ 38,352 $ 17,659 $ 9,342
Weighted average common shares outstanding - basic (in shares) 88,086 88,086 88,086 85,402
Weighted average common shares outstanding - diluted (in shares) 88,086 88,086 88,086 85,402
Earnings (loss) per common share - basic (in dollars per share) $ 0.35 $ 0.44 $ 0.20 $ 0.11
Earnings (loss) per common share - diluted (in dollars per share) $ 0.35 $ 0.44 $ 0.20 $ 0.11