v3.26.1
Fair Value Measurements - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Net change in unrealized appreciation (depreciation) on investment transactions $ (667) $ 36 $ (6,159) $ 704
Level 3        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Net change in unrealized appreciation (depreciation) on investment transactions $ (234) $ 438 $ (5,552) $ 1,630