Consolidated Statement of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, beginning balance (shares) at Feb. 28, 2019		26,115
Balance, beginning balance at Feb. 28, 2019	$ 603,728	$ 26,115	$ 58,695	$ 547,670	$ (28,752)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	6,290		6,290
Common stock issued under stock-based plans and related income tax expense (shares)		74
Common stock issued under stock-based plans and related income tax expense	(1,231)	$ 74	(1,305)
Common stock issued under employee stock purchase plan (shares)		90
Common stock issued under employee stock purchase plan	3,113	$ 90	3,023
Repurchase and retirement of common stock (shares)		(131)
Repurchase and retirement of common stock	(5,799)	$ (131)		(5,668)	0
Cash dividends paid	(17,822)			(17,822)
Net income	48,234			48,234
Foreign currency translation	(2,093)				(2,093)
Interest rate swap, net of tax	(54)				(54)
Balance, ending balance (shares) at Feb. 29, 2020		26,148
Balance, ending 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	7,330		7,330
Common stock issued under stock-based plans and related income tax expense (shares)		83
Common stock issued under stock-based plans and related income tax expense	(712)	$ 83	(795)
Common stock issued under employee stock purchase plan (shares)		91
Common stock issued under employee stock purchase plan	2,832	$ 91	2,741
Repurchase and retirement of common stock (shares)		1,214
Repurchase and retirement of common stock	48,311	$ 1,214		47,097
Cash dividends paid	(17,642)			(17,642)
Net income	39,614			39,614
Foreign currency translation	5,865				5,865
Interest rate swap, net of tax	(50)				(50)
Balance, ending balance (shares) at Feb. 28, 2021		25,108
Balance, ending 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	9,449		9,449
Common stock issued under stock-based plans and related income tax expense (shares)		109
Common stock issued under stock-based plans and related income tax expense	(2,187)	$ 109	(2,296)
Common stock issued under employee stock purchase plan (shares)		73
Common stock issued under employee stock purchase plan	2,788	$ 73	2,715
Repurchase and retirement of common stock (shares)		602
Repurchase and retirement of common stock	30,815	$ 602		30,213
Cash dividends paid	(16,874)			(16,874)
Net income	84,022			84,022
Foreign currency translation	(2,310)			(70)	(2,240)
Interest rate swap, net of tax	0				0
Balance, ending balance (shares) at Feb. 28, 2022		24,688
Balance, ending balance at Feb. 28, 2022	$ 667,365	$ 24,688	$ 85,847	$ 584,154	$ (27,324)