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Interest Rate Swaps Schedule of Changes in AOCI Net of Tax (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Mar. 30, 2019
Dec. 29, 2018
Dec. 30, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Cumulative adjustment as a result of ASU 2017-12 adoption         $ 0    
Other Comprehensive Income (Loss), Net of Tax $ (2,185) $ 552 $ (3,649) $ 2,384      
Beginning Balance [Member]              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Accumulated Other Comprehensive Income (Loss), Net of Tax           $ 3,814 $ 3,358
Accounting Standards Update 2017-12 [Member]              
Derivative Instruments and Hedging Activities Disclosures [Line Items]              
Cumulative adjustment as a result of ASU 2017-12 adoption $ 717 $ 0 $ 717 $ 0   $ 0