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Property and Equipment - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 24, 2020
USD ($)
Jun. 26, 2019
USD ($)
Jun. 24, 2020
USD ($)
restaurant
Jun. 26, 2019
USD ($)
restaurant
Property, Plant and Equipment [Line Items]        
Depreciation expense $ 4,200 $ 4,500 $ 8,500 $ 9,200
Impairment of assets 52 227 1,429 227
California        
Property, Plant and Equipment [Line Items]        
Impairment of assets $ 100 $ 200 $ 1,400 $ 200
Number of restaurants primarily responsible for impairment | restaurant     3 1