RESTRUCTURING-RELATED ACTIVITIES - Restructuring and Related Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 4,765	$ 9,775	$ 1,069
GNP
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,473
Cash Outlays	1,565
GNP | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	936
Cash Outlays	1,500
GNP | Inventory impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(227)
Cash Outlays	0
GNP | Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	781
Cash Outlays	0
GNP | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(17)
Cash Outlays	65
40 North Foods
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,140
Cash Outlays	2,043
40 North Foods | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	449
Cash Outlays	449
40 North Foods | Inventory impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	103
Cash Outlays	0
40 North Foods | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	115
Cash Outlays	$ 29
GNP
Restructuring Cost and Reserve [Line Items]
Restructuring charges		4,832
Cash Outlays		2,581
GNP | Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		3,381
Cash Outlays		2,581
GNP | Inventory impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges		699
Cash Outlays		0
GNP | Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges		752
Cash Outlays		$ 0