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Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Other comprehensive income, net of tax:        
Foreign currency translation adjustment, tax $ (346) $ (3,054) $ (51) $ (1,376)
Net unrealized gains/(losses) on foreign currency cash flow hedges, tax 0 15 18 114
Reclassification adjustment for realized losses/(gains) in current earnings, tax $ 0 $ (22) $ (2) $ 97