Consolidated Statements of Operations - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Investment income:
Total investment income		$ 29,963	$ 28,349
Expenses:
Base management fee (See Note 3)		4,602	5,109
Performance-based incentive fee (See Note 3)		2,192	2,657
Interest and expenses on debt (See Note 10)		9,729	6,886
Administrative services expenses (See Note 3)		266	250
Other general and administrative expenses		841	723
Expenses before provision for taxes		17,630	15,625
Provision for taxes on net investment income		2,000	200
Net expenses		19,630	15,825
Net investment income		10,333	12,524
Net realized gain (loss) on investments and debt:
Non-controlled, non-affiliated investments		4,064	5,201
Non-controlled and controlled, affiliated investments			(31,274)
Debt extinguishment			(1,669)
Net realized gain (loss) on investments and debt		4,064	(27,742)
Net change in unrealized appreciation (depreciation) on:
Non-controlled, non-affiliated investments		(50,517)	(49,603)
Non-controlled and controlled, affiliated investments		(41,048)	96,372
Provision for taxes on unrealized appreciation (depreciation) on investments		896	(5,045)
Debt appreciation (depreciation) (See Notes 5 and 10)		4,378	(996)
Net change in unrealized appreciation (depreciation) on investments and debt		(86,291)	40,728
Net realized and unrealized gain (loss) from investments and debt		(82,227)	12,986
Net increase (decrease) in net assets resulting from operations		$ (71,894)	$ 25,510
Net increase (decrease) in net assets resulting from operations per common share (See Note 7)		$ (1.10)	$ 0.38
Net investment income per common share	[1]	$ 0.16	$ 0.19
Non-controlled, Non-affiliated Investments
Investment income:
Interest		$ 22,231	$ 15,540
Payment-in-kind			2,410
Other income		487	4,191
Controlled, Affiliated Investments
Investment income:
Interest		2,858	2,267
Payment-in-kind		1,131	2,126
Dividend income		$ 3,256	$ 1,815

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