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Employee Benefit Plan (Details) - USD ($)
 12 Months Ended
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Schedule of Benefit Plans Disclosure [Line Items]      
Employee age threshhold for higher annual contribution 50 years    
Employer matching percentage 50.00%    
Maximum amount of employee contribution that employer matches 6.00%    
Amount charged to operations in connection with the plan $ 324,000 $ 224,000 $ 146,000
Under the age of 50      
Schedule of Benefit Plans Disclosure [Line Items]      
Maximum amount of annual compensation that can be deferred 18,000    
Over the age fo 50      
Schedule of Benefit Plans Disclosure [Line Items]      
Maximum amount of annual compensation that can be deferred $ 24,000