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Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 27, 2016
Dec. 29, 2015
Dec. 30, 2014
Changes in the carrying amount of goodwill      
Balance at the beginning of the period $ 116,571 $ 116,571  
Impairment 0 0 $ (600)
Balance at the end of the period 116,571 116,571 116,571
Accumulated goodwill impairment loss 4,200    
Changes in the carrying amount of intangible assets      
Balance at the beginning of the period, net 4,827 6,203  
Amortization expense (1,205) (1,376)  
Balance at the end of the period, net 3,622 4,827 $ 6,203
Gross carrying amount 15,400 15,400  
Accumulated amortization 11,753 $ 10,548  
Minimum      
Changes in the carrying amount of intangible assets      
Expected amortization expense for each of the next five years 300    
Maximum      
Changes in the carrying amount of intangible assets      
Expected amortization expense for each of the next five years $ 900