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Summary Of Refranchisings and Franchisee Development (Number Of Restaurants Sold And Developed By Franchisees And Related Gains And Fees Recognized) (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2020
USD ($)
Apr. 12, 2020
USD ($)
restaurant
Apr. 14, 2019
USD ($)
restaurant
Apr. 12, 2020
USD ($)
restaurant
Apr. 14, 2019
USD ($)
restaurant
Summary of Refranchisings, Franchise Development and Acquisitions [Line Items]          
Number of Company-operated restaurants sold to franchisees       0 0
Gains on the sale of company-operated restaurants | $   $ 0 $ 0 $ (1,575) $ (219)
Number of new restaurants opened by franchisees   5 2 16 11
Number of franchised restaurants closed   (2) (3) (12) (8)
Franchise Acquisitions          
Summary of Refranchisings, Franchise Development and Acquisitions [Line Items]          
Consideration transferred | $ $ 900        
Obtained Judgment          
Summary of Refranchisings, Franchise Development and Acquisitions [Line Items]          
Number of restaurants acquired from franchisees   8