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Related Party Transactions (Details)
$ in Millions
3 Months Ended
Mar. 29, 2022
USD ($)
restaurant
Mar. 30, 2021
USD ($)
restaurant
Franchise    
Related Party Transactions    
Number of restaurants 96 97
Officers, directors and shareholders | Majority-owned    
Related Party Transactions    
Number of restaurants 1 1
Officers, directors and shareholders | Franchise    
Related Party Transactions    
Number of restaurants 4 4
Fees received from franchise and license restaurants | $ $ 0.4 $ 0.4