Consolidated Statements of Changes in Shareholder's Equity - USD ($) $ in Thousands	Total	Common Shares	Preference Shares	Additional Paid-In Capital	Retained Earnings
Balance, shares (in shares) at Feb. 29, 2024		15,564
Balance at Feb. 29, 2024	$ 2,133,774	$ 0	$ 0	$ 2,078,774	$ 55,000
Preferred stock, balance, shares (in shares) at Feb. 29, 2024			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	16,081				16,081
Balance, shares (in 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 (in shares) at May. 31, 2024			400
Balance, shares (in shares) at Feb. 29, 2024		15,564
Balance at Feb. 29, 2024	2,133,774	$ 0	$ 0	2,078,774	55,000
Preferred stock, balance, shares (in shares) at Feb. 29, 2024			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	44,740
Balance, shares (in 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 (in shares) at Aug. 31, 2024			400
Balance, shares (in 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 (in shares) at May. 31, 2024			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	28,659				28,659
Issuance of common shares	300,000			300,000
Preference share dividends	(10,500)				(10,500)
Issuance of common shares (in shares)		2,276
Balance, shares (in 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 (in shares) at Aug. 31, 2024			400
Balance, shares (in shares) at Feb. 28, 2025		17,840
Balance at Feb. 28, 2025	$ 2,525,387	$ 0	$ 0	2,378,774	146,613
Preferred stock, balance, shares (in shares) at Feb. 28, 2025	400		400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 49,287				49,287
Preference share dividends	(10,500)
Common share dividends	(30,784)				(30,784)
Balance, shares (in shares) at May. 31, 2025		17,840
Balance at May. 31, 2025	2,543,890	$ 0	$ 0	2,378,774	165,116
Preferred stock, balance, shares (in shares) at May. 31, 2025			400
Balance, shares (in shares) at Feb. 28, 2025		17,840
Balance at Feb. 28, 2025	$ 2,525,387	$ 0	$ 0	2,378,774	146,613
Preferred stock, balance, shares (in shares) at Feb. 28, 2025	400		400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 106,520
Balance, shares (in shares) at Aug. 31, 2025	17,840	17,840
Balance at Aug. 31, 2025	$ 2,590,623	$ 0	$ 0	2,378,774	211,849
Preferred stock, balance, shares (in shares) at Aug. 31, 2025	400		400
Balance, shares (in shares) at May. 31, 2025		17,840
Balance at May. 31, 2025	$ 2,543,890	$ 0	$ 0	2,378,774	165,116
Preferred stock, balance, shares (in shares) at May. 31, 2025			400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	57,233				57,233
Preference share dividends	$ (10,500)				(10,500)
Balance, shares (in shares) at Aug. 31, 2025	17,840	17,840
Balance at Aug. 31, 2025	$ 2,590,623	$ 0	$ 0	$ 2,378,774	$ 211,849
Preferred stock, balance, shares (in shares) at Aug. 31, 2025	400		400