Marketable Securities (Tables)

9 Months Ended

Dec. 28, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Securities

The Company’s portfolio of available-for-sale marketable securities consists of the following:

	Amortized   Cost		Gross   Unrealized   Gains		Gross   Unrealized   Losses			Estimated   Fair Value
	(In thousands)
December 28, 2014
U.S. government and agency securities	$	44,077	$	11	$	(53	)	$	44,035
Corporate debt obligations		89,843		51		(287	)		89,607
Mortgage-backed securities		30,573		155		(95	)		30,633
Municipal bonds		20,163		68		(20	)		20,211
Other debt securities		7,951		1		(14	)		7,938
	$	192,607	$	286	$	(469	)	$	192,424
March 30, 2014
U.S. government and agency securities	$	49,237	$	16	$	(55	)	$	49,198
Corporate debt obligations		74,386		200		(72	)		74,514
Mortgage-backed securities		32,778		191		(187	)		32,782
Municipal bonds		24,989		133		(9	)		25,113
Other debt securities		5,178		3		(5	)		5,176
	$	186,568	$	543	$	(328	)	$	186,783

Schedule of Amortized Cost and Estimated Fair Value of Debt Securities

The amortized cost and estimated fair value of debt securities as of December 28, 2014, by contractual maturity, are presented below. Expected maturities will differ from contractual maturities because the issuers of securities may have the right to repay obligations without prepayment penalties. Certain debt instruments, although possessing a contractual maturity greater than one year, are classified as short-term marketable securities based on their ability to be traded on active markets and availability for current operations.

	Amortized   Cost		Estimated   Fair Value
	(In thousands)
Due in one year or less	$	18,047	$	18,054
Due after one year through three years		144,154		143,896
Due after three years through five years		11,586		11,569
Due after five years		18,820		18,905
	$	192,607	$	192,424

Schedule of Unrealized Losses by Investment Category

The following table presents the Company’s marketable securities with unrealized losses by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 28, 2014 and March 30, 2014.

	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)
December 28, 2014
U.S. government and agency securities	$	31,711	$	(53	)	$	—	$	—		$	31,711	$	(53	)
Corporate debt obligations		65,215		(287	)		—		—			65,215		(287	)
Mortgage-backed securities		7,554		(29	)		6,088		(66	)		13,642		(95	)
Municipal bonds		6,111		(20	)		—		—			6,111		(20	)
Other debt securities		6,062		(14	)		—		—			6,062		(14	)
	$	116,653	$	(403	)	$	6,088	$	(66	)	$	122,741	$	(469	)
March 30, 2014
U.S. government and agency securities	$	26,879	$	(55	)	$	—	$	—		$	26,879	$	(55	)
Corporate debt obligations		19,906		(72	)		—		—			19,906		(72	)
Mortgage-backed securities		11,261		(145	)		2,838		(42	)		14,099		(187	)
Municipal bonds		3,322		(9	)		—		—			3,322		(9	)
Other debt securities		2,955		(5	)		—		—			2,955		(5	)
	$	64,323	$	(286	)	$	2,838	$	(42	)	$	67,161	$	(328	)