Quarterly report [Sections 13 or 15(d)]

INVESTMENTS - Schedule of Contractual Principal Repayment and Maturity (Details)

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INVESTMENTS - Schedule of Contractual Principal Repayment and Maturity (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
 [1]
Investments, Debt and Equity Securities [Abstract]    
2026 $ 11,456  
2027 84,622  
2028 176,116  
2029 121,834  
2030 312,771  
Thereafter 171,579  
Total contractual repayments 878,378  
Adjustments to cost basis of debt investments (1,209)  
Investments in equity securities 91,492  
Investment owned, at cost 968,661 $ 876,614
Debt investments with maturity dates prior to period end $ 200  
[1] Cumulative gross unrealized depreciation for federal income tax purposes is $59.7 million; cumulative gross unrealized appreciation for federal income tax purposes is $34.1 million. Cumulative net unrealized depreciation is $25.5 million, based on a tax cost of $884.7 million.