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Other Income (Expense), Net (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Other Income and Expenses [Abstract]        
Net gain (loss) on foreign currency exchange contracts [1] $ (1,598) $ (477) $ (1,364) $ (676)
Net gain (loss) on foreign currency exchange transactions 1,006 1,105 1,336 2,016
Other income (expense) (50) 43 (31) 51
Other income (expense), net $ (642) $ 671 $ (59) $ 1,391
[1] This represents the gains (losses) incurred on foreign currency hedging derivatives (see Note 17 for further details).