Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024
Numerator:
Net income	$ 89,346	$ 35,419	$ 260,254	$ 75,021
Series A Preferred Stock Dividends	0	0	0	(1,200)
Redemption premium on Series A Preferred Stock	0	0	0	(75,198)
Numerator for diluted earnings per share—net income (loss) available to common shareholders	$ 89,346	$ 35,419	$ 260,254	$ (1,377)
Denominator:
Denominator for basic earnings per common share-weighted average shares (shares)	30,037,000	29,852,000	29,992,000	28,294,000
Effect of dilutive securities:
Employee and director stock awards	207,000	205,000	251,000	0
Denominator for diluted earnings per common share (shares)	30,244,000	30,057,000	30,243,000	28,294,000
Computation of basic and diluted earnings per share
Basic earnings per common share (usd per share)	$ 2.97	$ 1.19	$ 8.68	$ (0.05)
Diluted earnings per common share (usd per share)	$ 2.95	$ 1.18	$ 8.61	$ (0.05)