Marketable Securities (Tables)

3 Months Ended

Jul. 03, 2011

Marketable Securities

Schedule Of Available-For-Sale Securities

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(In thousands)
July 3, 2011
U.S. government and agency securities	$	71,580	$	148	$	(22	)	$	71,706
Corporate debt obligations		184,067		1,115		(145	)		185,037
Asset and mortgage-backed securities		29,159		313		(67	)		29,405
Municipal bonds		22,099		32		(4	)		22,127
Non-U.S. government and agency securities		1,651		—		—			1,651
	$	308,556	$	1,608	$	(238	)	$	309,926
April 3, 2011
U.S. government and agency securities	$	55,875	$	94	$	(216	)	$	55,753
Corporate debt obligations		137,706		1,012		(282	)		138,436
Asset and mortgage-backed securities		22,249		293		(52	)		22,490
Municipal bonds		17,941		10		(10	)		17,941
Non-U.S. government and agency securities		1,676		—		—			1,676
	$	235,447	$	1,409	$	(560	)	$	236,296

Schedule Of Amortized Cost And Estimated Fair Value Of Debt Securities

	Amortized Cost		Estimated Fair Value
	(In thousands)
Due in one year or less	$	121,395	$	121,762
Due after one year through three years		128,945		129,674
Due after three years through five years		15,676		15,708
Due after five years		42,540		42,782
	$	308,556	$	309,926

Schedule Of Unrealized Losses By Investment Category

	Less Than 12 Months					12 Months or Greater				Total
Description of Securities	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(In thousands)
July 3, 2011
U.S. government and agency securities	$	23,576	$	(22	)	$	—	$	—	$	23,576	$	(22	)
Corporate debt obligations		56,756		(145	)		—		—		56,756		(145	)
Asset and mortgage-backed securities		11,479		(67	)		—		—		11,479		(67	)
Municipal bonds		1,247		(4	)		—		—		1,247		(4	)
	$	93,058	$	(238	)	$	—	$	—	$	93,058	$	(238	)
April 3, 2011
U.S. government and agency securities	$	25,712	$	(216	)	$	—	$	—	$	25,712	$	(216	)
Corporate debt obligations		60,595		(282	)		—		—		60,595		(282	)
Asset and mortgage-backed securities		7,991		(52	)		—		—		7,991		(52	)
Municipal bonds		1,866		(10	)		—		—		1,866		(10	)
	$	96,164	$	(560	)	$	—	$	—	$	96,164	$	(560	)