Quarterly report [Sections 13 or 15(d)]

BORROWINGS - Fair Value Narrative (Details)

v3.25.1
BORROWINGS - Fair Value Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Mar. 31, 2025
Sep. 30, 2024
Debt Instrument [Line Items]    
Fair Value $ 762,636 $ 796,260 [1]
Collateral Pledged    
Debt Instrument [Line Items]    
Fair Value $ 691,100 $ 714,400
Credit Facility | Line of Credit | Revolving Line of Credit    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable rate 2.75% 3.10%
Unused fee percentage 1.00% 1.00%
[1] Cumulative gross unrealized depreciation for federal income tax purposes is $66.1 million; cumulative gross unrealized appreciation for federal income tax purposes is $85.8 million. Cumulative net unrealized appreciation is $19.7 million, based on a tax cost of $776.5 million.