Consolidated Statements of Comprehensive Earnings (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Nov. 30, 2013	Dec. 01, 2012
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 9,668	$ 8,052	$ 19,948	$ 14,715
Other comprehensive earnings:
Unrealized gain (loss) on marketable securities, net of $56, $(-), $(95) and $5 tax expense (benefit), respectively	105	(2)	(175)	9
Unrealized gain on foreign currency hedge, net of $184 and $264 tax expense	322	0	463	0
Foreign currency translation adjustments	(1,045)	(116)	(2,662)	(1,644)
Other comprehensive earnings (loss)	(618)	(118)	(2,374)	(1,635)
Total comprehensive earnings	$ 9,050	$ 7,934	$ 17,574	$ 13,080