SEGMENT AND GEOGRAPHIC INFORMATION - Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 180,889	$ 112,822	$ 329,635	$ 163,956
Property and equipment, net	56,180		56,180		$ 47,357
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	142,712	92,770	261,782	131,776
Property and equipment, net	45,394		45,394		37,680
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	27,401	15,470	48,516	21,412
Property and equipment, net	4,400		4,400		3,050
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,501	3,631	12,251	7,748
Property and equipment, net	4,735		4,735		4,979
New Zealand
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,772	769	3,528	1,416
Property and equipment, net	1,651		1,651		$ 1,648
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 2,503	$ 182	$ 3,558	$ 1,604