Consolidated Statements of Changes in Net Assets (Unaudited) - USD ($)	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
INCREASE (DECREASE) FROM OPERATIONS:
Net investment income	$ 35,201,147	$ 19,942,810	$ 23,113,125
Net realized gain from investments	7,446,596	13,398,327	(8,703,806)
Realized losses on extinguishment of debt	(1,587,083)	(2,434,410)	(128,617)
Income tax (provision) benefit from realized gain on investments	548,568	(2,886,444)	(3,895,354)
Net change in unrealized appreciation (depreciation) on investments	(15,218,132)	17,019,993	4,966,322
Net change in provision for deferred taxes on unrealized (appreciation) depreciation on investments	(1,715,333)	694,908	(574,634)
Net increase (decrease) in net assets resulting from operations	24,675,763	45,735,184	14,777,036
DECREASE FROM SHAREHOLDER DISTRIBUTIONS:
Total distributions to shareholders	(27,313,402)	(22,033,235)	(13,746,998)
Net decrease in net assets from shareholder distributions	(27,313,402)	(22,033,235)	(13,746,998)
CAPITAL SHARE TRANSACTIONS:
Proceeds from issuance of common stock		26,835,203
Stock dividend distribution	4,648,262	3,875,206	2,481,084
Repurchases of common stock	(10,824,340)	(2,545,037)	(3,608,459)
Repurchase fees	(8,764)	(1,992)	(3,746)
Offering costs		(270,576)
Net increase (decrease) in net assets from capital share transactions	(6,184,842)	27,892,804	(1,131,121)
Total increase (decrease) in net assets	(8,822,481)	51,594,753	(101,083)
Net assets at beginning of period	355,780,523	304,185,770	304,286,853
Net assets at end of period	$ 346,958,042	$ 355,780,523	$ 304,185,770