Property and Equipment - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) restaurant	Mar. 25, 2020 USD ($) restaurant
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 3,900	$ 4,400
Impairment of property and equipment	$ 240	1,377
Number Of Restaurants Resulting In Impairment | restaurant	1
California
Property, Plant and Equipment [Line Items]
Impairment of property and equipment	$ 200	$ 1,400
Number Of Restaurants Resulting In Impairment | restaurant	3	3