Marketable Securities (Tables)

9 Months Ended

Nov. 25, 2012

Marketable Securities [Abstract]

Summary Of Available-For-Sale Securities

		Gross		Gross
		Unrealized		Unrealized		Estimated
		Gains		Losses		Fair Value
November 25, 2012:
U.S. Treasury and other
government securities	$	37	$	25	$	85,193
U.S. corporate debt securities		-		47		35,374
Total marketable securities	$	37	$	72	$	120,567
February 26, 2012:
U.S. Treasury and other
government securities	$	41	$	53	$	93,479
U.S. corporate debt securities		61		12		45,803
Total marketable securities	$	102	$	65	$	139,282

Schedule Of Estimated Fair Values Of Securities, By Contractual Maturity

Due in one year or less	$	62,872
Due after one year through five years		57,695
	$	120,567