Property, Plant, and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 786,323	$ 738,113
Less accumulated depreciation	(506,099)	(492,203)
Property, plant and equipment, net	280,224	245,910
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,046	12,198
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	128,322	120,035
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	597,209	561,093
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 47,746	$ 44,787