Related Party Transactions (Details) $ in Millions	3 Months Ended
	Mar. 28, 2023 USD ($) restaurant	Mar. 29, 2022 USD ($) restaurant
Franchise
Related Party Transactions
Number of restaurants	93	96
Four Franchise Restaurants and One Majority-Owned Company Restaurant [Member] | Franchise fees
Related Party Transactions
Revenues | $	$ 0.5	$ 0.4
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