CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Fee income:
Other income	$ 2,369	$ 545	$ 121
Total investment income	204,439	178,135	119,300
Compensation	11,143	10,631	9,870
Share-based compensation	6,963	4,518	3,705
Interest	54,959	43,088	28,873
Professional fees	4,685	3,705	3,180
General and administrative	6,242	5,244	4,632
Total operating expenses	83,992	67,186	50,260
Income before taxes	120,447	110,949	69,040
Federal income, excise and other taxes	1,424	1,135	630
Deferred taxes	841	(191)	(301)
Total income tax provision	2,265	944	329
Net investment income	118,182	110,005	68,711
Realized (loss) gain
Income tax (provision) benefit	(2,941)	(286)	(130)
Total net realized (loss) gain on investments, net of tax	(49,650)	(39,895)	(17,029)
Net unrealized appreciation (depreciation) on investments
Income tax (provision) benefit	(3,659)	17	(6,514)
Total net unrealized appreciation (depreciation) on investments, net of tax	2,423	13,640	(18,589)
Net realized and unrealized (losses) gains on investments	(47,227)	(26,255)	(35,618)
Realized loss on extinguishment of debt	(387)	(361)	0
Realized loss on disposal of fixed assets	(20)	0	0
Net increase in net assets from operations	$ 70,548	$ 83,389	$ 33,093
Pre-tax net investment income per share - basic (in usd per share)	$ 2.50	$ 2.72	$ 2.30
Net investment income per share – basic (in usd per share)	2.46	2.70	2.29
Net increase in net assets from operations – basic (in usd per share)	1.47	2.05	1.10
Net increase in net assets from operations – diluted (in usd per share)	$ 1.47	$ 2.05	$ 1.10
Weighted average common shares outstanding – basic (in shares)	47,448,093	40,727,133	30,015,533
Weighted average common shares outstanding – diluted (in shares)	51,187,714	40,727,133	30,015,533
Non-control/Non-affiliate investments
Interest income:
Interest income	$ 152,952	$ 133,329	$ 87,982
Payment-in-kind interest income:
Payment-in-kind interest income	9,819	7,737	2,382
Dividend income:
Dividend income	4,125	3,533	1,824
Fee income:
Fee income	8,340	4,257	4,057
Realized (loss) gain
Realized (loss) gain	(46,722)	(18,062)	(5,872)
Net unrealized appreciation (depreciation) on investments
Net unrealized appreciation (depreciation) on investments	916	1,584	(6,942)
Affiliate investments
Interest income:
Interest income	20,015	17,209	11,658
Payment-in-kind interest income:
Payment-in-kind interest income	2,214	2,471	3,060
Dividend income:
Dividend income	421	230	141
Fee income:
Fee income	2,179	759	638
Realized (loss) gain
Realized (loss) gain	273	(6,500)	(11,027)
Net unrealized appreciation (depreciation) on investments
Net unrealized appreciation (depreciation) on investments	6,354	(6,688)	6,014
Control investments
Interest income:
Interest income	1,226	0	0
Payment-in-kind interest income:
Payment-in-kind interest income	644	0	0
Dividend income:
Dividend income	0	7,983	7,337
Fee income:
Fee income	135	82	100
Realized (loss) gain
Realized (loss) gain	(260)	(15,047)	0
Net unrealized appreciation (depreciation) on investments
Net unrealized appreciation (depreciation) on investments	$ (1,188)	$ 18,727	$ (11,147)