ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES - Schedule of accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands	Oct. 03, 2020	Sep. 28, 2019
Disclosure Text Block Supplement [Abstract]
Sales tax payable	$ 477	$ 1,141
Accrued wages and payroll related costs	3,302	2,942
Customer advance deposits	3,661	4,549
Accrued occupancy and other operating expenses	5,248	2,040
Accrued expenses and other current liabilities	$ 12,688	$ 10,672