v3.26.1
Change in Net Assets from Operations Per Common Share - Summary of Information Sets Forth for Computation of Basic and Diluted Per Share Net Increase in Net Assets Resulting from Operations (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Net increase (decrease) in net assets resulting from operations $ 4,469 $ 8,150 $ 11,095 $ 33,690
Denominator for basic weighted average shares 65,296,094 65,296,094 65,296,094 65,296,094
Denominator for diluted weighted average shares 65,296,094 65,296,094 65,296,094 65,296,094
Basic and diluted net increase (decrease) in net assets per share resulting from operations $ 0.07 $ 0.12 $ 0.17 $ 0.52