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Condensed Consolidated Statement of Comprehensive Income (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Other Comprehensive Items:        
Pension and other post-retirement liability adjustments, tax effect $ 0 $ 2 $ 20 $ 10
Deferred loss on cash flow hedges, tax effect $ 3 $ 39 $ 122 $ 143