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Revenues - Other (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 26, 2018
Jun. 26, 2018
Dec. 26, 2017
Revenues      
Estimated gift cards sold by Company that are never redeemed (as a percent)   4.00%  
Gift card fees, net of gift card breakage income $ 1,500 $ 3,300  
Deferred revenue-gift cards 97,545 97,545 $ 156,627
Franchise royalties and fees      
Revenues      
Deferred revenue recognized 100 $ 200  
Sales percentage, remittance to marketing and advertising   0.30%  
Franchise royalties      
Revenues      
Ongoing royalties received as a percentage of gross sales from domestic franchisees and international franchisee   4.00%  
Gift cards      
Revenues      
Deferred revenue recognized 21,800 $ 86,400  
Other Liabilities | Franchise royalties and fees      
Revenues      
Deferred revenue $ 1,200 $ 1,200 $ 1,200