PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Dec. 30, 2018
Property, Plant and Equipment [Abstract]
Depreciation	$ 65,700	$ 61,900	$ 127,200	$ 122,600
Payments for capital projects			177,609	155,188
Transfer of property, plant and equipment			116,500	109,600
Proceeds from property disposals	1,200	200	1,740	1,205
Gain (loss) on property disposals	(300)	$ (100)	(230)	$ (239)
Assets held for sale	146		146		$ 178
Idled assets, carrying amount	41,900		41,900
Idled assets, depreciable value	137,100		137,100
Idled assets, accumulated depreciation	$ 95,200		$ 95,200