RESTRUCTURING - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	27 Months Ended
	Apr. 03, 2021	Apr. 03, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1,838	$ 54,175
Asset impairment	$ 500
Maximum
Restructuring Cost and Reserve [Line Items]
Execution period	24 months
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Execution period	12 months
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 1,322	$ 37,553
Restructuring and Impairment Costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1,800
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring gain	100
Windows
Restructuring Cost and Reserve [Line Items]
Restructuring costs	900
Siding
Restructuring Cost and Reserve [Line Items]
Restructuring costs	100
Commercial
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 700