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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 27, 2018
Dec. 28, 2017
Dec. 29, 2016
Change in unrealized gain on available for sale investments, net of tax effect (benefit) $ 0 $ (9) $ 9
Pension gain (loss) arising during period, net of tax effect (benefit) 708 (1,685) (40)
Amortization of the net actuarial loss and prior service credit related to the pension, net of tax effect 167 142 55
Pension curtailment gain, net of tax effect 0 0 127
Fair market value adjustment of interest rate swap, net of tax benefit 115 0 95
Reclassification adjustment on interest rate swap included in interest expense, net of tax effect 59 0 25
Reclassification adjustment related to interest rate swap de-designation, net of tax effect $ 0 $ 0 $ 63