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Interest Rate Swap Estimated Amount to be Reclassified into Earnings Next 12 Months (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Derivative [Line Items]          
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion   $ 2,283 $ 0 $ 0  
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred $ 400        
Accumulated Other Comprehensive Income (Loss), Net of Tax $ 1,392 $ 1,392 0 0  
Beginning Balance [Member]          
Derivative [Line Items]          
Accumulated Other Comprehensive Income (Loss), Net of Tax     $ 0 $ 0 $ 0