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Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Tax Credit Carryforward [Line Items]      
Valuation allowance $ 482 $ 482  
Employee benefits 4,300    
Excess tax benefit of stock-based compensation 1,163 593 $ 749
State and Local Jurisdiction      
Tax Credit Carryforward [Line Items]      
Operating loss carryforward 23,300 $ 23,300  
Valuation allowance 443    
Domestic Tax Authority      
Tax Credit Carryforward [Line Items]      
Valuation allowance $ 39