PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Long-lived assets
Property, plant and equipment, at cost	$ 1,160,865	$ 1,165,687
Land and improvements
Long-lived assets
Property, plant and equipment, at cost	99,797	93,258
Buildings and improvements
Long-lived assets
Property, plant and equipment, at cost	348,836	350,937
Machinery and equipment
Long-lived assets
Property, plant and equipment, at cost	549,311	588,439
Transportation equipment
Long-lived assets
Property, plant and equipment, at cost	24,380	23,682
Office furniture and equipment
Long-lived assets
Property, plant and equipment, at cost	85,239	82,025
Construction in progress
Long-lived assets
Property, plant and equipment, at cost	$ 53,302	$ 27,346