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Basis of Presentation and Summary of Significant Accounting Policies - Advertising Expenses (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Franchisor Disclosure [Line Items]      
Percentage of revenue collected for advertising fund 2.00%    
Advertising expense $ 0.1 $ 0.2 $ 0.3
Selling, General and Administrative Expenses      
Franchisor Disclosure [Line Items]      
Franchise advertising fund discretionary contributions   0.9 1.5
Cost of Sales      
Franchisor Disclosure [Line Items]      
Franchise advertising fund expenses $ 1.5 $ 1.4 $ 1.2