v3.26.1
Fair Value Measurements - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Net change in unrealized appreciation (depreciation) on investment transactions $ (5,376) $ 4 $ (5,492) $ 668
Level 3        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Net change in unrealized appreciation (depreciation) on investment transactions $ (5,410) $ 689 $ (5,542) $ 1,265