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Related Party Transactions (Details)
$ in Millions
12 Months Ended
Dec. 27, 2022
USD ($)
restaurant
Dec. 28, 2021
USD ($)
restaurant
Dec. 29, 2020
USD ($)
restaurant
Franchise      
Related Party Transactions      
Number of restaurants 100 101  
Officers, directors and shareholders      
Related Party Transactions      
Number of restaurants 4 4 4
Officers, directors and shareholders | Majority-owned      
Related Party Transactions      
Number of restaurants 1 1 1
Officers, directors and shareholders | Franchise      
Related Party Transactions      
Fees received from franchise and license restaurants | $ $ 1.8 $ 1.7 $ 0.9