Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	May 31, 2022	May 31, 2021
Numerator:
Net income	$ 24,077	$ 22,337
After-tax interest expense for Convertible Notes	547	0
Numerator for diluted earnings per share	$ 24,624	$ 22,337
Denominator:
Denominator for basic earnings per common share-weighted average shares (shares)	24,709	25,051
Effect of dilutive securities:
Employee and Director stock awards (shares)	161	219
Convertible notes (shares)	805	0
Denominator for diluted earnings per common share (shares)	25,675	25,270
Earnings per share basic and diluted:
Basic earnings per common share (usd per share)	$ 0.97	$ 0.89
Diluted earnings per common share (usd per share)	$ 0.96	$ 0.88