Fixed Assets (Schedule Of Fixed Assets) (Details) - USD ($) $ in Thousands	Jul. 02, 2016	Jan. 02, 2016
Property, Plant and Equipment [Line Items]
Gross fixed assets	$ 901,312	$ 741,355
Accumulated depreciation	(370,844)	(339,802)
PP&E Net including assets held for sale	530,468	401,553
Fixed assets, net	530,402	401,465
Land and land improvements
Property, Plant and Equipment [Line Items]
Gross fixed assets	44,434	28,508
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Gross fixed assets	198,402	156,725
Machinery, equipment and computer systems
Property, Plant and Equipment [Line Items]
Gross fixed assets	566,545	506,649
Trucks, trailers and automobiles
Property, Plant and Equipment [Line Items]
Gross fixed assets	32,716	33,760
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross fixed assets	5,298	4,210
Construction in progress
Property, Plant and Equipment [Line Items]
Gross fixed assets	49,532	11,503
Capital Leases
Property, Plant and Equipment [Line Items]
Gross fixed assets	4,385	0
Fixed assets held for sale
Property, Plant and Equipment [Line Items]
Fixed assets held for sale	$ (66)	$ (88)