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Net Periodic Pension (Benefit) Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Retirement Benefits [Abstract]    
Service cost $ 0 $ 113
Interest cost on projected benefit obligation 723 1,045
Expected return on plan assets (1,210) (1,194)
Amortization of unrecognized loss 263 300
Net periodic pension (benefit) cost $ (224) $ 264