Condensed Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance (shares) at Feb. 29, 2020		26,148
Balance at Feb. 29, 2020	$ 634,366	$ 26,148	$ 66,703	$ 572,414	$ (30,899)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	1,766		1,766
Common stock issued under stock-based plans and related income tax expense (shares)		47
Common stock issued under stock-based plans and related income tax expense	(539)	$ 47	(586)
Cash dividends paid	(4,425)			(4,425)
Net income	5,541			5,541
Foreign currency translation	(1,039)				(1,039)
Interest rate swap	(14)				(14)
Balance (shares) at May. 31, 2020		26,195
Balance at May. 31, 2020	635,656	$ 26,195	67,883	573,530	(31,952)
Balance (shares) at Feb. 28, 2021		25,108
Balance at Feb. 28, 2021	623,292	$ 25,108	75,979	547,289	(25,084)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	1,811		1,811
Common stock issued under stock-based plans and related income tax expense (shares)		89
Common stock issued under stock-based plans and related income tax expense	(2,101)	$ 89	(2,190)
Repurchase and retirement of treasury shares (shares)		126
Repurchase and retirement of treasury shares	(6,264)	$ (126)		(6,138)
Cash dividends paid	(4,245)			(4,245)
Net income	22,337			22,337
Foreign currency translation	2,581			(70)	2,651
Interest rate swap	0
Balance (shares) at May. 31, 2021		25,071
Balance at May. 31, 2021	$ 637,411	$ 25,071	$ 75,600	$ 559,173	$ (22,433)