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Interest Rate Swaps Schedule of Changes in AOCL Net of Tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Derivative Instruments, Gain Recognized in Other Comprehensive Income (Loss), Effective Portion $ 612 $ 2,240 $ 2,283
Other Comprehensive Income (Loss), Net of Tax 456 1,966 $ 1,392
Ending fiscal year AOCI balance $ 3,814 $ 3,358