Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 630,919	$ 427,903
Accumulated depreciation	(332,853)	(282,409)
Total property, plant and equipment, net	298,066	145,494
Depreciation expense	31,300	28,500	$ 28,700
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,624	4,250
Building and leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	262,657	162,780
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 362,638	$ 260,873