OTHER ACCRUED EXPENSES AND CURRENT LIABILITIES - Schedule of Other Accrued Expenses and Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 25, 2024	Dec. 27, 2023
OTHER ACCRUED EXPENSES AND CURRENT LIABILITIES
Accrued sales and property taxes	$ 5,867	$ 5,229
Gift card liability	4,454	4,877
Loyalty rewards program liability	801	687
Accrued advertising	7,195	3,010
Accrued legal settlements and professional fees	516	720
Deferred franchise and development fees	537	586
Other	3,914	3,252
Total other accrued expenses and current liabilities	$ 23,284	$ 18,361