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Financial Instruments - Schedule of Derivative Instruments on Statement of Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Derivative Instruments Gain Loss [Line Items]    
Loss Recognized in AOCI $ (3,174) $ (794)
Loss Reclassified from AOCI into Earnings (903) (84)
Revenue, cost of revenue, operating expenses | Foreign currency forward contracts    
Derivative Instruments Gain Loss [Line Items]    
Loss Recognized in AOCI (3,174) (794)
Loss Reclassified from AOCI into Earnings $ (903) $ (84)