OTHER ACCRUED EXPENSES AND CURRENT LIABILITIES - Schedule of Other Accrued Expenses and Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 24, 2025	Dec. 25, 2024
OTHER ACCRUED EXPENSES AND CURRENT LIABILITIES
Accrued sales and property taxes	$ 6,381	$ 5,349
Gift card liability	4,821	5,100
Loyalty rewards program liability	1,064	844
Accrued advertising	1,116	1,194
Accrued legal settlements and professional fees	1,902	463
Deferred franchise and development fees	544	539
Other	3,097	2,407
Total other accrued expenses and current liabilities	$ 18,925	$ 15,896