ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Dec. 28, 2019
Payables and Accruals [Abstract]
Accrued freight and other operating expenses	$ 13,342	$ 12,454
Contract liabilities	7,424	4,499
Customer discounts, allowances, and returns	8,485	6,976
Advertising and marketing	11,811	3,300
Warranty reserve	7,851	6,584
Interest payable	176	420
Other	7,301	7,855
Total accrued expenses and other current liabilities	$ 56,390	$ 42,088