Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 01, 2014	Jun. 02, 2013
Net earnings	$ 8,216	$ 4,929
Other comprehensive earnings, net of tax:
Foreign currency translation	(94)	336
Unrealized gains on marketable securities:
Other comprehensive (loss) earnings	(65)	365
Total comprehensive earnings	8,151	5,294
Gains On Marketable Securities [Member]
Unrealized gains on marketable securities:
Unrealized holding gains (losses) arising during the period	32	30
Losses On Marketable Securities [Member]
Unrealized gains on marketable securities:
Unrealized holding gains (losses) arising during the period	(3)
Less: reclassification adjustment for gains included in net earnings		$ (1)