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Consolidated Statements of Income (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Statement [Abstract]      
Accumulated other comprehensive earnings reclassifications $ (443) $ 38 $ 1,836
Income tax expense from reclassification $ (93) $ 13 $ 643