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Interest Rate Swaps Tax Impact of Derivative Liability on Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jun. 25, 2016
Jul. 01, 2017
Jun. 25, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax $ (98) $ (872) $ 82 $ (872)