Marketable Securities (Tables)

12 Months Ended

Mar. 03, 2013

Marketable Securities [Abstract]

Schedule Of Fair Value of Available-For-Sell Securities

				March 3, 2013
		Total		Level 1		Level 2		Level 3
U.S. Treasury and other
government securities	$	58,299	$	58,299	$	-	$	-
U.S. corporate debt securities		30,800		20,859		9,941	$	-
Total marketable securities	$	89,099	$	79,158	$	9,941	$	-

				February 26, 2012
		Total		Level 1		Level 2		Level 3
U.S. Treasury and other
government securities	$	93,480	$	93,480	$	-	$	-
U.S. corporate debt securities		45,802		45,802		-	$	-
Total marketable securities	$	139,282	$	139,282	$	-	$	-

Summary Of Available-For-Sale Securities

				Gross		Gross
		Unamortized		Unrealized		Unrealized
		Cost Basis		Gains		Losses
March 3, 2013:
U.S. Treasury and other
government securities	$	48,293	$	47	$	48
U.S. corporate debt securities		40,859		11		63
Total marketable securities	$	89,152	$	58	$	111
February 26, 2012:
U.S. Treasury and other
government securities	$	93,491	$	41	$	53
U.S. corporate debt securities		45,754		61		12
Total marketable securities	$	139,245	$	102	$	65

Schedule Of Realized Gains (Losses) On Investments

				Fiscal Year
		2013		2012		2011
Gross realized gains on sale	$	9	$	43	$	11
Gross realized losses on sale		35		65		47

Schedule Of Estimated Fair Values Of Securities, By Contractual Maturity

Due in one year or less	$	63,463
Due after one year through five years		25,636
	$	89,099