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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Fair Value of Foreign Currency Forward Contracts    
Foreign Currency Cash Flow Hedge Asset at Fair Value $ 413 $ 153
Foreign Currency Cash Flow Hedge Liability at Fair Value (686) (264)
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value 170 155
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value (362) (302)
Foreign currency forward contracts $ (465) $ (258)