REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 357,667	$ 246,938	$ 605,221	$ 421,350
United States
Disaggregation of Revenue [Line Items]
Net sales	324,674	237,134	549,032	402,132
International
Disaggregation of Revenue [Line Items]
Net sales	32,993	9,804	56,189	19,218
Coolers & Equipment
Disaggregation of Revenue [Line Items]
Net sales	157,801	128,610	251,259	188,104
Drinkware
Disaggregation of Revenue [Line Items]
Net sales	192,882	114,326	341,761	226,943
Other
Disaggregation of Revenue [Line Items]
Net sales	6,984	4,002	12,201	6,303
Wholesale
Disaggregation of Revenue [Line Items]
Net sales	160,784	113,891	281,564	208,707
Direct-to-consumer
Disaggregation of Revenue [Line Items]
Net sales	$ 196,883	$ 133,047	$ 323,657	$ 212,643