Quarterly report [Sections 13 or 15(d)]

BORROWINGS - Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details)

v3.25.4
BORROWINGS - Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Sep. 30, 2025
Debt Instrument [Line Items]      
Credit Facility $ 213,200   $ 0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring      
Debt Instrument [Line Items]      
Credit Facility 213,200   $ 0
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Long-Term Debt      
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]      
Beginning balance 0 $ 70,600  
Borrowings 233,800 87,500  
Repayments (20,600) (96,600)  
Net unrealized appreciation 0 0  
Ending balance $ 213,200 $ 61,500