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Subsequent Event (Details)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 29, 2021
USD ($)
restaurant
Dec. 29, 2020
restaurant
Dec. 29, 2020
USD ($)
Subsequent Events      
Number of restaurants acquired | restaurant   2  
Purchase price paid | $     $ 10.6
Subsequent Events. | Seven Franchise Restaurants [Member]      
Subsequent Events      
Number of restaurants acquired | restaurant 7    
Purchase price paid | $ $ 27.0