Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS - Schedule of Line of Credit Facilities (Details)

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BORROWINGS - Schedule of Line of Credit Facilities (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Sep. 30, 2023
Debt Instrument [Line Items]      
Line of credit outstanding, at cost $ 85,000   $ 47,800
Credit Facility | Revolving Line of Credit | Line of Credit      
Debt Instrument [Line Items]      
Commitment amount 233,659   223,659
Line of credit outstanding, at cost 85,000   47,800
Availability 130,302   $ 169,060
Weighted average borrowings outstanding, at cost $ 48,582 $ 129,062  
Weighted average interest rate 12.70% 6.90%  
Commitment (unused) fees incurred $ 437 $ 156