Fair Value Measurements - Schedule of Investments that Use Level 3 Inputs (Details) - Level 3 [Member] - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Schedule of Investments that Use Level 3 Inputs [Line Items]
Balance at beginning	$ 140,290	$ 165,316
Purchases and other adjustments to cost	153,047	115,736
Sales (including repayments or maturities)	(53,090)	(123,035)
Net realized gains/(losses) from investments	(13,372)	6,603
Net unrealized gains/(losses)	5,307	(1,201)
Transfer in/(out)	(7,995)	(23,129)
Balance at ending	224,187	140,290
Senior Secured First Lien Term Loans [Member]
Schedule of Investments that Use Level 3 Inputs [Line Items]
Balance at beginning	68,987	82,499
Purchases and other adjustments to cost	68,553	31,590
Sales (including repayments or maturities)	(36,901)	(32,879)
Net realized gains/(losses) from investments	(11,601)	(8,728)
Net unrealized gains/(losses)	7,826	19,634
Transfer in/(out)	(7,883)	(23,129)
Balance at ending	88,981	68,987
Senior Secured Notes [Member]
Schedule of Investments that Use Level 3 Inputs [Line Items]
Balance at beginning	7,422
Purchases and other adjustments to cost		34,000
Sales (including repayments or maturities)	(425)	(26,578)
Net realized gains/(losses) from investments
Net unrealized gains/(losses)
Transfer in/(out)
Balance at ending	6,997	7,422
Equities/ Warrants [Member]
Schedule of Investments that Use Level 3 Inputs [Line Items]
Balance at beginning	63,881	82,817
Purchases and other adjustments to cost	84,494	50,146
Sales (including repayments or maturities)	(15,764)	(63,578)
Net realized gains/(losses) from investments	(1,771)	15,331
Net unrealized gains/(losses)	(2,519)	(20,835)
Transfer in/(out)	(112)
Balance at ending	$ 128,209	$ 63,881