Fair Value of Financial Instruments (Tables)

6 Months Ended

Sep. 27, 2015

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on a Recurring Basis

A summary of the assets measured at fair value on a recurring basis as of September 27, 2015 and March 29, 2015 are as follows:

	Fair Value Measurements Using
	Level 1		Level 2		Total
	(In thousands)
September 27, 2015
Cash and cash equivalents	$	101,870	$	—	$	101,870
Marketable securities:
U.S. government and agency securities		75,389		—		75,389
Corporate debt obligations		—		89,267		89,267
Mortgage-backed securities		—		22,792		22,792
Municipal bonds		—		14,287		14,287
Other debt securities		—		4,084		4,084
		75,389		130,430		205,819
	$	177,259	$	130,430	$	307,689
March 29, 2015
Cash and cash equivalents	$	115,241	$	—	$	115,241
Marketable securities:
U.S. government and agency securities		54,440		—		54,440
Corporate debt obligations		—		99,323		99,323
Mortgage-backed securities		—		26,822		26,822
Municipal bonds		—		16,721		16,721
Other debt securities		—		3,868		3,868
		54,440		146,734		201,174
	$	169,681	$	146,734	$	316,415