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Derivatives and Hedging - Summary of Fair Value of Derivative Instruments by Contract Type and Location of Asset and/or Liability on Consolidated Condensed Balance Sheets (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Other Current Assets    
Derivatives, Fair Value [Line Items]    
Foreign currency exchange contracts, asset derivatives designated as hedging instruments, fair value $ 39 $ 2,660
Foreign currency exchange contracts, asset derivatives not designated as hedging instruments, fair value 421 864
Accounts payable and accrued expenses    
Derivatives, Fair Value [Line Items]    
Foreign currency exchange contracts, liability derivatives designated as hedging instruments, fair value 195 28
Foreign currency exchange contracts, liability derivatives not designated as hedging instruments, fair value $ 1,208 $ 57