REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 246,938	$ 231,654	$ 421,350	$ 387,007
Sales Revenue | Customer Concentration Risk | One customer
Disaggregation of Revenue [Line Items]
Customer concentration		17.00%		16.00%
United States
Disaggregation of Revenue [Line Items]
Net sales	237,134	$ 220,978	402,132	$ 369,646
International
Disaggregation of Revenue [Line Items]
Net sales	9,804	10,676	19,218	17,361
Coolers & Equipment
Disaggregation of Revenue [Line Items]
Net sales	128,610	109,056	188,104	168,708
Drinkware
Disaggregation of Revenue [Line Items]
Net sales	114,326	116,955	226,943	207,910
Other
Disaggregation of Revenue [Line Items]
Net sales	4,002	5,643	6,303	10,389
Wholesale
Disaggregation of Revenue [Line Items]
Net sales	113,891	149,176	208,707	242,784
Direct-to-consumer
Disaggregation of Revenue [Line Items]
Net sales	$ 133,047	$ 82,478	$ 212,643	$ 144,223