Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 28, 2023	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021
Numerator:
Net income from continuing operations	$ 66,339	$ 66,339	$ 49,817	$ 27,183
Dividends on preferred stock	(8,240)	(8,240)	0	0
Net income from continuing operations available to common shareholders	58,099		49,817	27,183
Net income (loss) from discontinued operations	(119,313)	(119,313)	34,205	12,431
Net income (loss) available to common shareholders	$ (61,214)	$ (61,214)	$ 84,022	$ 39,614
Denominator:
Denominator for basic earnings per common share-weighted average shares (shares)	24,828,000	24,828,000	24,855,000	25,897,000
Effect of dilutive securities:
Employee and director stock awards	150,000		222,000	148,000
Denominator for diluted earnings per common share (shares)	24,978,000	24,978,000	25,077,000	26,045,000
Earnings per common share from continuing operations
Earnings (loss) per common share from continuing operations (in dollars per share)	$ 2.34	$ 2.34	$ 2.00	$ 1.05
Earnings (loss) per common share from continuing operations (in dollars per share)	2.33	2.33	1.99	1.04
Earnings per common share from discontinued operations:
Earnings (loss) per common share from discontinued operations (in dollars per share)	(4.81)	(4.81)	1.38	0.48
Earnings (loss) per common share from discontinued operations (in dollars per share)	(4.78)	(4.78)	1.36	0.48
Computation of basic and diluted earnings per share
Basic earnings per common share (usd per share)	(2.47)	(2.47)	3.38	1.53
Diluted earnings per common share (usd per share)	$ (2.45)	$ (2.45)	$ 3.35	$ 1.52