Consolidated Schedule of Investments - Derivatives, Interest Rate Swap - USD ($)	Dec. 31, 2025	Sep. 30, 2025
Schedule of Investments [Line Items]
Derivative assets at fair value	$ 19,544,000	$ 24,182,000
Interest rate swap
Schedule of Investments [Line Items]
Derivative assets at fair value	18,112,000	19,471,000
Derivative assets at fair value	$ 18,112,000	$ 19,471,000
Open Swap Contract, Identifier [Axis]: Interest Rate Swap, July 15, 2030
Schedule of Investments [Line Items]
Derivative interest rate (as a percent)		6.19%
Floating interest rate (as a percent)		2.4926%
Open Swap Contract, Identifier [Axis]: Interest Rate Swap, July 15th, 2030
Schedule of Investments [Line Items]
Derivative interest rate (as a percent)	6.19%
Floating interest rate (as a percent)	2.4926%
Notional amount	$ 400,000,000	$ 400,000,000
Derivative assets at fair value	$ 3,712,000	$ 4,038,000
Open Swap Contract, Identifier [Axis]: Interest Rate Swap, July 23, 2029
Schedule of Investments [Line Items]
Derivative interest rate (as a percent)		6.50%
Floating interest rate (as a percent)		2.5954%
Open Swap Contract, Identifier [Axis]: Interest Rate Swap, July 23rd, 2029
Schedule of Investments [Line Items]
Derivative interest rate (as a percent)	6.50%
Floating interest rate (as a percent)	2.5954%
Notional amount	$ 400,000,000	$ 400,000,000
Derivative assets at fair value	$ 5,965,000	$ 6,493,000
Open Swap Contract, Identifier [Axis]: Interest Rate Swap, November 14, 2028
Schedule of Investments [Line Items]
Derivative interest rate (as a percent)		8.40%
Floating interest rate (as a percent)		4.0405%
Open Swap Contract, Identifier [Axis]: Interest Rate Swap, November 14th, 2028
Schedule of Investments [Line Items]
Derivative interest rate (as a percent)	8.40%
Floating interest rate (as a percent)	4.0405%
Notional amount	$ 350,000,000	$ 350,000,000
Derivative assets at fair value	$ 8,435,000	$ 8,940,000