Long-lived Assets - Schedule of Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Sep. 24, 2016	Dec. 26, 2015
Property, Plant and Equipment [Line Items]
Long-lived assets, gross	$ 277,691	$ 251,435
Less: accumulated depreciation and amortization	(240,539)	(232,005)
Net long-lived assets	37,152	19,430
Construction-in-progress	5,526	4,423
Total property, plant, and equipment	42,678	23,853
Machinery and equipment
Property, Plant and Equipment [Line Items]
Long-lived assets, gross	168,164	150,983
Computer equipment and software
Property, Plant and Equipment [Line Items]
Long-lived assets, gross	30,228	27,951
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Long-lived assets, gross	6,114	5,380
Leasehold improvements
Property, Plant and Equipment [Line Items]
Long-lived assets, gross	$ 73,185	$ 67,121