Consolidated Statement of 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, 2013		25,376
Balance, beginning balance at Feb. 28, 2013	$ 333,933	$ 25,376	$ 17,653	$ 294,093	$ (3,189)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation (shares)		14
Stock compensation	3,703	$ 14	3,689
Stock Issued During Period, Shares, Restricted Stock Award, Gross		56
Restricted Stock Units	(1,337)	$ 56	(1,393)
Stock Issued for SARs, Shares		68
Stock Issued for SARs	(1,049)	$ 68	(1,117)
Employee Stock Purchase Plan (shares)		63
Employee Stock Purchase Plan	1,582	$ 63	1,519
Excess tax benefits from share-based compensation	(1,603)		(1,603)
Cash dividend paid	14,290			14,290
Net income	59,597			59,597	0
Foreign currency translation	(7,775)				(7,775)
Interest rate swap, net of $29,205 of income tax	(54)				(54)
Balance, ending balance (shares) at Feb. 28, 2014		25,577
Balance, ending balance at Feb. 28, 2014	375,913	$ 25,577	21,954	339,400	(11,018)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation (shares)		16
Stock compensation	4,080	$ 16	4,064
Stock Issued During Period, Shares, Restricted Stock Award, Gross		21
Restricted Stock Units	(476)	$ 21	(497)
Stock Issued for SARs, Shares		40
Stock Issued for SARs	(331)	$ 40	(371)
Employee Stock Purchase Plan (shares)		78
Employee Stock Purchase Plan	2,375	$ 78	2,297
Excess tax benefits from share-based compensation	(259)		(259)	0
Cash dividend paid	14,897			14,897
Net income	64,943			64,943	0
Foreign currency translation	(11,760)				(11,760)
Interest rate swap, net of $29,205 of income tax	(54)				(54)
Balance, ending balance (shares) at Feb. 28, 2015		25,732
Balance, ending balance at Feb. 28, 2015	420,052	$ 25,732	27,706	389,446	(22,832)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation (shares)		15
Stock compensation	4,538	$ 15	4,523
Stock Issued During Period, Shares, Restricted Stock Award, Gross		17
Restricted Stock Units	(373)	$ 17	(390)
Stock Issued for SARs, Shares		41
Stock Issued for SARs	(91)	$ 41	(132)
Employee Stock Purchase Plan (shares)		69
Employee Stock Purchase Plan	2,485	$ 69	2,416
Excess tax benefits from share-based compensation	(1,025)		(1,025)
Cash dividend paid	15,482			15,482
Net income	76,790
Foreign currency translation	(7,674)				(7,674)
Interest rate swap, net of $29,205 of income tax	(54)				(54)
Balance, ending balance (shares) at Feb. 29, 2016		25,874
Balance, ending balance at Feb. 29, 2016	$ 481,216	$ 25,874	$ 35,148	$ 450,754	$ (30,560)