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Interest Rate Swap Tax Impact of Derivative Liability on Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax $ 891 $ 0 $ 0