CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Fee income:
Other income	$ 121	$ 17	$ 21
Total investment income	119,300	82,215	68,062
Compensation	9,870	8,838	7,756
Share-based compensation	3,705	3,585	2,944
Interest	28,873	19,924	17,941
Professional fees	3,180	2,489	2,193
General and administrative	4,632	4,077	3,115
Total operating expenses	50,260	38,913	33,949
Income before taxes	69,040	43,302	34,113
Federal income, excise and other taxes	630	181	637
Deferred taxes	(301)	434	1,805
Total income tax provision	329	615	2,442
Net investment income	68,711	42,687	31,671
Realized (loss) gain
Income tax provision	(130)	(1,442)	0
Total net realized (loss) gain on investments, net of tax	(17,029)	5,834	(8,536)
Net unrealized (depreciation) appreciation on investments
Income tax provision	(6,514)	(1,968)	(2,236)
Total net unrealized (depreciation) appreciation on investments, net of tax	(18,589)	11,467	28,755
Net realized and unrealized (losses) gains on investments	(35,618)	17,301	20,219
Realized loss on extinguishment of debt	0	(17,087)	(1,007)
Realized loss on disposal of fixed assets	0	(86)	0
Net increase (decrease) in net assets from operations	$ 33,093	$ 42,815	$ 50,883
Pre-tax net investment income per share - basic (in usd per share)	$ 2.30	$ 1.90	$ 1.79
Pre-tax net investment income per share - diluted (in usd per share)	2.30	1.90	1.79
Net investment income per share – basic (in usd per share)	2.29	1.87	1.66
Net investment income per share – diluted (in usd per share)	2.29	1.87	1.66
Net increase in net assets from operations – basic (in usd per share)	1.10	1.87	2.67
Net increase in net assets from operations – diluted (in usd per share)	$ 1.10	$ 1.87	$ 2.67
Weighted average shares outstanding – basic (in share)	30,015,533	22,839,835	19,060,131
Weighted average shares outstanding – diluted (in share)	30,015,533	22,839,835	19,060,131
Non-control/Non-affiliate investments
Interest income:
Interest income	$ 87,982	$ 58,136	$ 42,880
Payment-in-kind interest income:
Payment-in-kind interest income	2,382	2,051	4,268
Dividend income:
Dividend income	1,824	1,654	1,752
Fee income:
Fee income	4,057	4,833	3,233
Realized (loss) gain
Realized (loss) gain	(5,872)	7,136	(6,908)
Net unrealized (depreciation) appreciation on investments
Unrealized gain (loss)	(6,942)	20,940	21,218
Affiliate investments
Interest income:
Interest income	11,658	7,122	6,126
Payment-in-kind interest income:
Payment-in-kind interest income	3,060	1,160	3,018
Dividend income:
Dividend income	141	28	33
Fee income:
Fee income	638	494	122
Realized (loss) gain
Realized (loss) gain	(11,027)	140	(1,628)
Net unrealized (depreciation) appreciation on investments
Unrealized gain (loss)	6,014	(4,750)	(2,825)
Control investments
Dividend income:
Dividend income	7,337	6,720	6,609
Fee income:
Fee income	100	0	0
Net unrealized (depreciation) appreciation on investments
Unrealized gain (loss)	$ (11,147)	$ (2,755)	$ 12,598