Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 128,759	$ 126,263
Less accumulated depreciation	(102,901)	(98,333)
Property, plant and equipment, net	25,858	27,930
Depreciation and amortization	7,200	7,100	$ 9,200
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,152	2,068
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 37,841	38,471
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 53,781	51,442
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 34,985	$ 34,282
Computer equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	1 year
Computer equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years