v3.26.1
Borrowings (Details)
3 Months Ended 9 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
Debt Instrument [Line Items]          
Minimum asset coverage ratio required (as a percent) 1.50   1.50    
Outstanding borrowings $ 0   $ 0   $ 0
Borrowings on debt     2,700,000 $ 35,000  
Repayments of long-term lines of credit     2,700,000 35,000  
Outstanding borrowings $ 0   $ 0   0
Revolving Credit Facility | Adviser Revolver          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate (as a percent) 3.80%   3.80%    
Revolving Credit Facility | Adviser Revolver | Line of Credit          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity $ 75,000,000   $ 75,000,000   $ 75,000,000
Borrowings on debt (1,000,000) $ 0 2,700,000 35,000  
Repayments of long-term lines of credit 1,000,000 $ 0   35,000  
Interest expense $ 1,000   $ 2,000 $ 1,000