Consolidated Statements of Operations - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Investment income:
Total investment income		$ 122,377	$ 143,818	$ 145,366
Expenses:
Base management fee		16,179	16,654	16,549
Incentive fee		9,768	12,741	13,901
Interest and expenses on debt		41,315	45,188	39,408
Administrative services expenses		1,850	1,689	1,843
General and administrative expenses		4,300	4,874	3,837
Expenses before provision for taxes and financing costs		73,412	81,146	75,538
Provision for taxes on net investment income		2,590	2,602	4,295
Credit facility amendment and debt issuance costs (See Notes 5 and 11)		324	0	0
Net expenses		76,326	83,748	79,833
Net investment income		46,051	60,070	65,533
Net realized gain (loss) on investments and debt:
Net realized (gain) loss on debt extinguishment		0	0	(289)
Provision for taxes on realized gain on investments		26	186	(4,952)
Net realized gain (loss) on investments and debt		(52,434)	(33,647)	(156,757)
Net change in unrealized appreciation (depreciation) on:
Provision for taxes on unrealized appreciation (depreciation) on investments		0	(680)	1,576
Debt appreciation (depreciation) (See Notes 5 and 11)		(116)	(4,385)	(3,753)
Net change in unrealized appreciation (depreciation) on investments and debt		39,109	22,428	57,417
Net realized and unrealized gain (loss) from investments and debt		(13,325)	(11,219)	(99,340)
Net increase (decrease) in net assets resulting from operations		$ 32,726	$ 48,851	$ (33,807)
Net increase (decrease) in net assets resulting from operations per common share		$ 0.5	$ 0.75	$ (0.52)
Net investment income per common share	[1]	$ 0.71	$ 0.92	$ 1
Non-controlled, Non-affiliated Investments
Investment income:
Interest		$ 60,351	$ 80,527	$ 93,420
Payment-in-kind		6,222	5,140	1,236
Dividend income		1,931	2,869	13,945
Other income		1,780	3,508	2,316
Net realized gain (loss) on investments and debt:
Non-controlled, non-affiliated investments		(30,514)	1,166	(18,418)
Net change in unrealized appreciation (depreciation) on:
Net change in unrealized appreciation (depreciation) on investments and debts		9,862	(20,895)	(35,440)
Non-controlled, Affiliated Investments
Investment income:
Interest		0	0	73
Payment-in-kind		0	347	625
Net realized gain (loss) on investments and debt:
Non-controlled, non-affiliated investments		(21,946)	(34,999)	(133,098)
Net change in unrealized appreciation (depreciation) on:
Net change in unrealized appreciation (depreciation) on investments and debts		29,363	48,388	95,034
Controlled, Affiliated Investments
Investment income:
Interest		30,049	25,738	15,425
Payment-in-kind		1,546	4,084	2,596
Dividend income		20,471	21,605	15,730
Other income		$ 27	$ 0	$ 0

[1] Based on the weighted average shares outstanding for the respective periods.