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Interest Rate Swaps - Pre-Tax Gains and Losses Derived from Interest Rate Swaps (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax $ 2,861 $ (7,056)