Marketable Securities - Schedule of Unrealized Losses by Investment Category (Detail) - USD ($) $ in Thousands	Jul. 03, 2016	Apr. 03, 2016
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Less Than 12 Months	$ 30,395	$ 64,837
Unrealized Losses of Less Than 12 Months	(71)	(117)
Fair Value of 12 Months or Greater	5,231	2,605
Unrealized Losses of 12 Months or Greater	(29)	(22)
Fair Value, Total	35,626	67,442
Unrealized Losses, Total	(100)	(139)
U.S. Government and Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Less Than 12 Months	5,751	23,221
Unrealized Losses of Less Than 12 Months	(3)	(15)
Fair Value, Total	5,751	23,221
Unrealized Losses, Total	(3)	(15)
Corporate Debt Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Less Than 12 Months	18,592	31,438
Unrealized Losses of Less Than 12 Months	(49)	(61)
Fair Value of 12 Months or Greater	1,172	741
Unrealized Losses of 12 Months or Greater	(5)	(8)
Fair Value, Total	19,764	32,179
Unrealized Losses, Total	(54)	(69)
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Less Than 12 Months	4,297	8,171
Unrealized Losses of Less Than 12 Months	(18)	(39)
Fair Value of 12 Months or Greater	4,059	1,864
Unrealized Losses of 12 Months or Greater	(24)	(14)
Fair Value, Total	8,356	10,035
Unrealized Losses, Total	(42)	(53)
Municipal Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Less Than 12 Months		379
Unrealized Losses of Less Than 12 Months		(1)
Fair Value, Total		379
Unrealized Losses, Total		(1)
Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value of Less Than 12 Months	1,755	1,628
Unrealized Losses of Less Than 12 Months	(1)	(1)
Fair Value, Total	1,755	1,628
Unrealized Losses, Total	$ (1)	$ (1)