Property and Equipment - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Apr. 03, 2016	Mar. 29, 2015
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 278,272	$ 288,557
Less accumulated depreciation and amortization	206,534	210,056
Property and Equipment, net	71,738	78,501
Land [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	11,663	11,663
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	39,811	38,996
Production and Test Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	217,952	229,268
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 8,846	$ 8,630