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Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation and Summary of Significant Accounting Policies - Consideration from Vendors (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Franchisor Disclosure [Line Items]      
Incentives From Vendors Recognized $ 6.5 $ 4.8 $ 4.7
Cost of Sales      
Franchisor Disclosure [Line Items]      
Incentives From Vendors Recognized $ 1.0 $ 0.7 $ 1.2