Supplemental Financial Information - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 28, 2021	Dec. 29, 2020
Supplemental Financial Information [Abstract]
Gift card liability	$ 2,189	$ 2,551
Occupancy related	2,109	1,322
Utilities	1,412	1,338
Current portion of finance lease liability	1,957	1,800
Accrued interest	316	375
Insurance liabilities	404	398
Other restaurant expense accruals	1,170	1,079
Other corporate expense accruals	2,884	2,769
Accrued expenses and other current liabilities	$ 12,441	$ 11,632