Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Numerator:
Net income for basic and diluted earnings per common share	$ 21,085	$ 19,703	$ 62,400	$ 23,454
Denominator:
Denominator for basic earnings per common share-weighted average shares (shares)	24,729	25,936	24,910	26,090
Effect of dilutive securities:
Employee and Director stock awards (shares)	216	115	222	87
Denominator for diluted earnings per common share (shares)	24,945	26,051	25,132	26,177
Earnings per share basic and diluted:
Basic earnings per common share (usd per share)	$ 0.85	$ 0.76	$ 2.51	$ 0.90
Diluted earnings per common share (usd per share)	$ 0.85	$ 0.76	$ 2.48	$ 0.90