RESTRUCTURING-RELATED ACTIVITIES (Costs Incurred and Cash Outlays) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 24, 2017	Sep. 30, 2018	Sep. 24, 2017
Restructuring Cost and Reserve [Line Items]
Expenses	$ 257	$ 4,147	$ 2,181	$ 8,496
Cash Outlay	327		1,971
GNP
Restructuring Cost and Reserve [Line Items]
Expenses	268		1,490
Cash Outlay	272		1,502
GNP | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Expenses	(43)		936
Cash Outlay	272		1,437
GNP | Inventory adjustments
Restructuring Cost and Reserve [Line Items]
Expenses	0		(227)
Cash Outlay	0		0
GNP | Asset impairments
Restructuring Cost and Reserve [Line Items]
Expenses	311		781
Cash Outlay	0		0
GNP | Other
Restructuring Cost and Reserve [Line Items]
Expenses	0		0
Cash Outlay	0		65
40 North Foods
Restructuring Cost and Reserve [Line Items]
Expenses	(11)		691
Cash Outlay	55		469
40 North Foods | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Expenses	0		449
Cash Outlay	38		443
40 North Foods | Inventory adjustments
Restructuring Cost and Reserve [Line Items]
Expenses	0		103
Cash Outlay	0		0
40 North Foods | Other
Restructuring Cost and Reserve [Line Items]
Expenses	(11)		139
Cash Outlay	$ 17		$ 26