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Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Comprehensive Income [Abstract]      
Defined benefit pension plan, tax $ 42 $ 122 $ (272)
Cash Flow Hedges, Tax $ 1,290    
Cash flow hedges, tax   $ 4,062 $ (3,938)