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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
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]        
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax $ (442) $ (752) $ (2,248) $ (1,235)