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Related Party Transactions (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
restaurant
Dec. 26, 2023
USD ($)
restaurant
Dec. 27, 2022
USD ($)
restaurant
Franchise      
Related Party Transactions      
Number of restaurants 118 106  
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      
Royalities and fees received from franchise and license restaurants | $ $ 2.1 $ 2.0 $ 1.8