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
Dec. 31, 2025
Sep. 30, 2025
 [1]
Investments, Debt and Equity Securities [Abstract]    
2026 $ 22,553  
2027 130,873  
2028 200,051  
2029 146,569  
2030 239,554  
Thereafter 103,360  
Total contractual repayments 842,960  
Adjustments to cost basis of debt investments (1,401)  
Investments in equity securities 84,481  
Investment owned, at cost 926,040 $ 876,614
Debt investments with maturity dates prior to period end $ 400  
[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.