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Consolidated Statements of Comprehensive Earnings (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 02, 2013	Mar. 03, 2012	Feb. 26, 2011
Statement of Other Comprehensive Income [Abstract]
Unrealized loss on marketable securities, tax	$ (15)	$ (8)	$ (88)
Unrealized loss on foreign currency hedge, tax	(147)	0	0
Unrealized loss on pension obligation, tax	$ (95)	$ (759)	$ (288)

Tax effect of the increase (decrease) in the value of the projected benefit obligation and the (increase) decrease in the value of the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost.

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- Definition

Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

Tax effect of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

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