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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 27, 2019
Jun. 28, 2018
Jun. 27, 2019
Jun. 28, 2018
Consolidated Statements of Comprehensive Income        
Amortization of the net actuarial loss and prior service credit related to the pension, net of tax effect $ 29 $ 42 $ 59 $ 83
Fair market value adjustment of interest rate swap, net of tax benefit (163) 63 (305) 0
Reclassification adjustment on interest rate swap included in interest expense, net of tax effect $ 4 $ 22 $ 8 $ 32