RESTRUCTURING ACTIVITIES - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 29, 2018	Sep. 29, 2018	Dec. 29, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6,243,000	$ 17,662,000
Total cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,935,000	10,765,000
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,308,000	6,897,000
ESS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5,746,000	14,793,000
Impairments of current and other assets			$ 7,944
ESS | Total cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,438,000	8,022,000	18,380,000
ESS | Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,308,000	$ 6,771,000	$ 15,651,000