Consolidated Statements of Comprehensive (Loss) Earnings (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 02, 2014	Mar. 03, 2013	Feb. 26, 2012
Net (loss) earnings	$ (42,329)	$ 16,961	$ 23,442
Other comprehensive earnings, net of tax:
Foreign currency translation	420	75	70
Less: reclassification adjustment for foreign currency translation gains included in net earnings		(1,465)
Other comprehensive earnings (loss)	592	(1,448)	94
Total comprehensive (loss) earnings	(41,737)	15,513	23,536
Gains On Marketable Securities [Member]
Other comprehensive earnings, net of tax:
Unrealized holding gains (losses) arising during the period	117	41	60
Less: reclassification adjustment for gains (losses) included in net income	(20)	(67)	(44)
Losses On Marketable Securities [Member]
Other comprehensive earnings, net of tax:
Unrealized holding gains (losses) arising during the period	(83)	(72)	(44)
Less: reclassification adjustment for gains (losses) included in net income	$ 158	$ 40	$ 52