Marketable Securities (Tables)

3 Months Ended

May 05, 2012

Marketable Securities [Abstract]

Available-for-sale marketable securities

	May 5, 2012
(in thousands)	Amortized Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate securities	$	24,930	$	234	$	(5	)	$	25,159
Government bonds		27,792		184		(3	)		27,973
Mortgage-backed securities		4,868		26		(4	)		4,890
Asset-backed securities and other		18,628		94		—			18,722
	$	76,218	$	538	$	(12	)	$	76,744
	August 27, 2011
(in thousands)	Amortized Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Corporate securities	$	26,261	$	229	$	(45	)	$	26,445
Government bonds		29,464		343		—			29,807
Mortgage-backed securities		4,291		55		—			4,346
Asset-backed securities and other		12,377		156		—			12,533
	$	72,393	$	783	$	(45	)	$	73,131