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Basis Of Presentation (Tables)
 4 Months Ended
Jan. 17, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Number of Restaurants The following table summarizes the number of restaurants as of the end of each period:
January 17,
2021		January 19,
2020
Company-operated148 137 
Franchise2,089 2,107 
Total system2,237 2,244