Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	12 Months Ended
	Mar. 04, 2017	Feb. 27, 2016	Feb. 28, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 85,790	$ 65,342	$ 50,516
Other comprehensive earnings (loss):
Unrealized (loss) gain on marketable securities, net of $(45), $38 and $88 of tax (benefit) expense, respectively	(83)	73	163
Unrealized loss on foreign currency hedge, net of $-, $- and $(36) of tax benefit, respectively	0	0	(62)
Unrealized gain (loss) on pension obligation, net of $74, $347 and $(830) of tax expense (benefit), respectively	130	610	(1,458)
Foreign currency translation adjustments	234	(9,734)	(8,003)
Other comprehensive earnings (loss)	281	(9,051)	(9,360)
Total comprehensive earnings	$ 86,071	$ 56,291	$ 41,156