Consolidated Statements Of Shareholders' Equity Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Common Stock Held in Trust	Deferred Compensation Obligation	Accumulated Other Comprehensive (Loss) Income
Balance at Feb. 28, 2015		$ 9,683	$ 138,575	$ 256,538	$ (801)	$ 801	$ (22,320)
Balance, shares at Feb. 28, 2015	29,050
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 65,342			65,342
Unrealized gain (loss) on marketable securities, net of tax	73						73
Unrealized gain (loss) on foreign currency hedge, net of tax	0
Unrealized gain (loss) on pension obligation, net of tax	610						610
Foreign currency translation adjustments	$ (9,734)					0	(9,734)
Issuance of stock, net of cancellations		34	114		(36)	36
Issuance of stock, net of cancellations, shares	102
Share-based compensation			4,923
Tax benefit (deficit) associated with stock plans			3,856
Exercise of stock options		67	1,539
Exercise of stock options, shares	200
Share repurchases		(192)	(2,996)	(21,723)
Share repurchases, shares	(575)
Other share retirements		(31)	(483)	(4,496)
Other share retirements, shares	(93)
Cash dividends				(13,184)
Balance at Feb. 27, 2016		9,561	145,528	282,477	(837)	837	(31,371)
Balance, shares at Feb. 27, 2016	28,684
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 85,790			85,790
Unrealized gain (loss) on marketable securities, net of tax	(83)						(83)
Unrealized gain (loss) on foreign currency hedge, net of tax	0
Unrealized gain (loss) on pension obligation, net of tax	130						130
Foreign currency translation adjustments	$ 234						234
Issuance of stock, net of cancellations		47	105	36	(38)	38
Issuance of stock, net of cancellations, shares	140
Share-based compensation			5,986
Tax benefit (deficit) associated with stock plans			(1,745)
Exercise of stock options		54	1,893
Exercise of stock options, shares	163
Share repurchases		(83)	(1,357)	(9,377)
Share repurchases, shares	(250)
Other share retirements		(19)	(299)	(2,263)
Other share retirements, shares	(57)
Cash dividends				(14,667)
Balance at Mar. 04, 2017	$ 470,577	9,560	150,111	341,996	(875)	875	(31,090)
Balance, shares at Mar. 04, 2017	28,680
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 79,488			79,488
Unrealized gain (loss) on marketable securities, net of tax	(95)						(95)
Unrealized gain (loss) on foreign currency hedge, net of tax	156						156
Unrealized gain (loss) on pension obligation, net of tax	284						284
Foreign currency translation adjustments	$ 6,692						6,692
Issuance of stock, net of cancellations		43	(186)	208	(47)	47
Issuance of stock, net of cancellations, shares	128
Share-based compensation			6,205
Exercise of stock options		34	800
Exercise of stock options, shares	102
Share repurchases		234	3,886	29,556	0	0	0
Share repurchases, shares	702
Other share retirements		(17)	(281)	(2,484)
Other share retirements, shares	(50)
Cash dividends				(16,393)
Balance at Mar. 03, 2018	$ 511,355	$ 9,386	$ 152,763	$ 373,259	$ (922)	$ 922	$ (24,053)
Balance, shares at Mar. 03, 2018	28,158