Consolidated Statements of Shareholder's Equity Statement - USD ($) $ in Thousands	Total	Common Shares	Preferred Stock	Additional Paid-In Capital	Retained Earnings
Balance, shares at Feb. 28, 2023		14,048
Balance at Feb. 28, 2023	$ 1,871,458	$ 0	$ 0	$ 1,878,774	$ (7,316)
Preferred stock, balance, shares at Feb. 28, 2023			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22,770				22,770
Balance, shares at May. 31, 2023		14,048
Balance at May. 31, 2023	1,894,228	$ 0	$ 0	1,878,774	15,454
Preferred stock, balance, shares at May. 31, 2023			400
Balance, shares at Feb. 28, 2023		14,048
Balance at Feb. 28, 2023	1,871,458	$ 0	$ 0	1,878,774	(7,316)
Preferred stock, balance, shares at Feb. 28, 2023			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares (in shares)		1,516
Balance, shares at Aug. 31, 2023		15,564
Balance at Aug. 31, 2023	2,089,246	$ 0	$ 0	2,078,774	10,472
Preferred stock, balance, shares at Aug. 31, 2023			400
Balance, shares at Feb. 28, 2023		14,048
Balance at Feb. 28, 2023	1,871,458	$ 0	$ 0	1,878,774	(7,316)
Preferred stock, balance, shares at Feb. 28, 2023			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	53,933
Balance, shares at Nov. 30, 2023		15,564
Balance at Nov. 30, 2023	2,114,891	$ 0	$ 0	2,078,774	36,117
Preferred stock, balance, shares at Nov. 30, 2023			400
Balance, shares at May. 31, 2023		14,048
Balance at May. 31, 2023	1,894,228	$ 0	$ 0	1,878,774	15,454
Preferred stock, balance, shares at May. 31, 2023			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares	200,000			200,000
Net income	5,518				5,518
Preference share dividends	(10,500)				(10,500)
Balance, shares at Aug. 31, 2023		15,564
Balance at Aug. 31, 2023	2,089,246	$ 0	$ 0	2,078,774	10,472
Preferred stock, balance, shares at Aug. 31, 2023			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	25,645				25,645
Balance, shares at Nov. 30, 2023		15,564
Balance at Nov. 30, 2023	$ 2,114,891	$ 0	$ 0	2,078,774	36,117
Preferred stock, balance, shares at Nov. 30, 2023			400
Balance, shares at Feb. 29, 2024	15,564	15,564
Balance at Feb. 29, 2024	$ 2,133,774	$ 0	$ 0	2,078,774	55,000
Preferred stock, balance, shares at Feb. 29, 2024	400		400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 16,081				16,081
Preference share dividends	(10,500)
Balance, shares at May. 31, 2024		15,564
Balance at May. 31, 2024	$ 2,149,855	$ 0	$ 0	2,078,774	71,081
Preferred stock, balance, shares at May. 31, 2024			400
Balance, shares at Feb. 29, 2024	15,564	15,564
Balance at Feb. 29, 2024	$ 2,133,774	$ 0	$ 0	2,078,774	55,000
Preferred stock, balance, shares at Feb. 29, 2024	400		400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares (in shares)		2,276
Balance, shares at Aug. 31, 2024		17,840
Balance at Aug. 31, 2024	$ 2,468,014	$ 0	$ 0	2,378,774	89,240
Preferred stock, balance, shares at Aug. 31, 2024			400
Balance, shares at Feb. 29, 2024	15,564	15,564
Balance at Feb. 29, 2024	$ 2,133,774	$ 0	$ 0	2,078,774	55,000
Preferred stock, balance, shares at Feb. 29, 2024	400		400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 62,835
Balance, shares at Nov. 30, 2024	17,840	17,840
Balance at Nov. 30, 2024	$ 2,486,109	$ 0	$ 0	2,378,774	107,335
Preferred stock, balance, shares at Nov. 30, 2024	400		400
Balance, shares at May. 31, 2024		15,564
Balance at May. 31, 2024	$ 2,149,855	$ 0	$ 0	2,078,774	71,081
Preferred stock, balance, shares at May. 31, 2024			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares	300,000
Net income	28,659				28,659
Preference share dividends	(10,500)
Balance, shares at Aug. 31, 2024		17,840
Balance at Aug. 31, 2024	2,468,014	$ 0	$ 0	2,378,774	89,240
Preferred stock, balance, shares at Aug. 31, 2024			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,095				18,095
Preference share dividends	$ (10,500)
Balance, shares at Nov. 30, 2024	17,840	17,840
Balance at Nov. 30, 2024	$ 2,486,109	$ 0	$ 0	$ 2,378,774	$ 107,335
Preferred stock, balance, shares at Nov. 30, 2024	400		400