CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Fee income:
Other income	$ 545	$ 121	$ 17
Total investment income	178,135	119,300	82,215
Compensation	10,631	9,870	8,838
Share-based compensation	4,518	3,705	3,585
Interest	43,088	28,873	19,924
Professional fees	3,705	3,180	2,489
General and administrative	5,244	4,632	4,077
Total operating expenses	67,186	50,260	38,913
Income before taxes	110,949	69,040	43,302
Federal income, excise and other taxes	1,135	630	181
Deferred taxes	(191)	(301)	434
Total income tax provision	944	329	615
Net investment income	110,005	68,711	42,687
Realized (loss) gain
Income tax provision	(286)	(130)	(1,442)
Total net realized (loss) gain on investments, net of tax	(39,895)	(17,029)	5,834
Net unrealized appreciation (depreciation) on investments
Income tax benefit (provision)	17	(6,514)	(1,968)
Total net unrealized appreciation (depreciation) on investments, net of tax	13,640	(18,589)	11,467
Net realized and unrealized (losses) gains on investments	(26,255)	(35,618)	17,301
Realized loss on extinguishment of debt	(361)	0	(17,087)
Realized loss on disposal of fixed assets	0	0	(86)
Net increase in net assets from operations	$ 83,389	$ 33,093	$ 42,815
Pre-tax net investment income per share - basic (in usd per share)	$ 2.72	$ 2.30	$ 1.90
Pre-tax net investment income per share - diluted (in usd per share)	2.72	2.30	1.90
Net investment income per share – basic (in usd per share)	2.70	2.29	1.87
Net investment income per share – diluted (in usd per share)	2.70	2.29	1.87
Net increase in net assets from operations – basic (in usd per share)	2.05	1.10	1.87
Net increase in net assets from operations – diluted (in usd per share)	$ 2.05	$ 1.10	$ 1.87
Weighted average shares outstanding – basic (in share)	40,727,133	30,015,533	22,839,835
Weighted average shares outstanding – diluted (in share)	40,727,133	30,015,533	22,839,835
Non-control/Non-affiliate investments
Interest income:
Interest income	$ 133,329	$ 87,982	$ 58,136
Payment-in-kind interest income:
Payment-in-kind interest income	7,737	2,382	2,051
Dividend income:
Dividend income	3,533	1,824	1,654
Fee income:
Fee income	4,257	4,057	4,833
Realized (loss) gain
Realized (loss) gain	(18,062)	(5,872)	7,136
Net unrealized appreciation (depreciation) on investments
Unrealized gain (loss)	1,584	(6,942)	20,940
Affiliate investments
Interest income:
Interest income	17,209	11,658	7,122
Payment-in-kind interest income:
Payment-in-kind interest income	2,471	3,060	1,160
Dividend income:
Dividend income	230	141	28
Fee income:
Fee income	759	638	494
Realized (loss) gain
Realized (loss) gain	(6,500)	(11,027)	140
Net unrealized appreciation (depreciation) on investments
Unrealized gain (loss)	(6,688)	6,014	(4,750)
Control investments
Dividend income:
Dividend income	7,983	7,337	6,720
Fee income:
Fee income	82	100	0
Realized (loss) gain
Realized (loss) gain	(15,047)	0	0
Net unrealized appreciation (depreciation) on investments
Unrealized gain (loss)	$ 18,727	$ (11,147)	$ (2,755)