Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Numerator:
Net income from continuing operations	$ 26,890	$ 18,439	$ 83,744	$ 58,912
Dividends on preferred stock	3,600	3,600	10,800	4,640
Numerator for diluted earnings per share—net income (loss) available to common shareholders	26,890	(24,142)	83,744	(58,675)
Net income from continuing operations available to common shareholders	23,290	14,839	72,944	54,272
Dividends on preferred stock	3,600	0	10,800	0
Numerator for diluted earnings per share continuing operations	26,890	14,839	83,744	54,272
Net income (loss) from discontinued operations	0	(38,981)	0	(112,947)
Net income (loss) available to common shareholders	$ 23,290	$ (24,142)	$ 72,944	$ (58,675)
Denominator:
Denominator for basic earnings per common share-weighted average shares (shares)	25,077,000	24,867,000	25,024,000	24,804,000
Effect of dilutive securities:
Employee and director stock awards	136,000	128,000	137,000	180,000
Series A convertible preferred stock (shares)	4,117,000	0	4,117,000	0
Denominator for diluted earnings per common share (shares)	29,330,000	24,995,000	29,278,000	24,984,000
Earnings per common share from continuing operations
Earnings (loss) per common share from continuing operations (in dollars per share)	$ 0.93	$ 0.60	$ 2.91	$ 2.19
Earnings (loss) per common share from continuing operations (in dollars per share)	0.92	0.59	2.86	2.17
Earnings per common share from discontinued operations:
Earnings (loss) per common share from discontinued operations (in dollars per share)	0	(1.57)	0	(4.55)
Earnings (loss) per common share from discontinued operations (in dollars per share)	0	(1.56)	0	(4.52)
Computation of basic and diluted earnings per share
Basic earnings per common share (usd per share)	0.93	(0.97)	2.91	(2.37)
Diluted earnings per common share (usd per share)	$ 0.92	$ (0.97)	$ 2.86	$ (2.35)