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Revenue - Other (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 25, 2018
Dec. 26, 2017
Revenue    
Estimated gift cards sold by Company that are never redeemed (as a percent) 4.00%  
Gift card fees $ 5,200  
Deferred revenue-gift cards 192,242 $ 156,627
Franchise royalties and fees    
Revenue    
Deferred revenue recognized $ 300  
Ongoing royalties received as a percentage of gross sales from domestic franchisees and international franchisee 4.00%  
Sales percentage, remittance to marketing and advertising 0.30%  
Gift cards    
Revenue    
Deferred revenue recognized $ 108,700  
Other Liabilities | Franchise royalties and fees    
Revenue    
Deferred revenue $ 1,800 $ 1,800