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Condensed Consolidated Statement of Comprehensive Income (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 02, 2021
Sep. 26, 2020
Oct. 02, 2021
Sep. 26, 2020
Other Comprehensive Items:        
Post-retirement liability adjustments, net, tax $ 9 $ (6) $ 21 $ 14
Deferred gain (loss) on cash flow hedges, tax $ 20 $ 19 $ 60 $ (103)