Consolidated Statement of Shareholders Equity (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Common Stock Held In Trust [Member]	Deferred Compensation Obligation [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance (in shares) at Feb. 28, 2015	29,050
Beginning balance at Feb. 28, 2015		$ 9,683	$ 138,575	$ 256,538	$ (801)	$ 801	$ (22,320)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 26,886			26,886
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	$ (63)						(63)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent						0	(5,151)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	101
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			4,858
Outstanding shares awards exercised	177
Stock Issued During Period, Value, Stock Options Exercised		59	1,322
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		34	(67)		(18)	18
Stock Repurchased and Retired During Period, Shares	(88)
Stock Repurchased and Retired During Period, Value		(29)	(438)	(4,228)
Dividends, Common Stock, Cash				(6,431)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			2,414
Ending balance at Aug. 29, 2015		9,747	146,664	272,765	(819)	819	(27,534)
Ending balance (in shares) at Aug. 29, 2015	29,240
Beginning balance (in shares) at Feb. 27, 2016	28,684
Beginning balance at Feb. 27, 2016	$ 406,195	9,561	145,528	282,477	(837)	837	(31,371)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	40,119			40,119
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	$ 65						65
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent						0	4,525
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures	139
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net			506
Outstanding shares awards exercised	125
Stock Issued During Period, Value, Stock Options Exercised		42	1,211
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		46	49		(16)	16
Stock Repurchased and Retired During Period, Shares	(52)
Stock Repurchased and Retired During Period, Value		(17)	(273)	(2,014)
Dividends, Common Stock, Cash				(7,133)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition			2,935
Ending balance at Aug. 27, 2016	$ 446,256	$ 9,632	$ 149,956	$ 313,449	$ (853)	$ 853	$ (26,781)
Ending balance (in shares) at Aug. 27, 2016	28,896