Consolidated Statements of Comprehensive Earnings (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 30, 2014	Aug. 31, 2013	Aug. 30, 2014	Aug. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 16,791	$ 6,121	$ 22,892	$ 10,280
Other comprehensive earnings:
Unrealized gain (loss) on marketable securities, net of $9, $(122), $54 and $(151) tax expense (benefit), respectively	17	(227)	99	(280)
Unrealized gain (loss) on foreign currency hedge, net of $-, $104, $(36) and $80 tax expense (benefit), respectively	0	182	(62)	141
Foreign currency translation adjustments	417	(1,869)	2,567	(1,617)
Other comprehensive earnings (loss)	434	(1,914)	2,604	(1,756)
Total comprehensive earnings	$ 17,225	$ 4,207	$ 25,496	$ 8,524