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DERIVATIVE FINANCIAL INSTRUMENTS (Fair Value of Derivative Instruments) (Details) - Foreign Exchange Contract - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Derivatives, Fair Value [Line Items]    
Financial collateral posted $ 0  
Designated as hedging instrument | Cash flow hedging | Prepaid and Other Current Assets    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 181 $ 0
Designated as hedging instrument | Cash flow hedging | Accrued Expenses and Other Current Liabilities    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 3,475 0
Not designated as hedging instrument | Prepaid and Other Current Assets    
Derivatives, Fair Value [Line Items]    
Asset Derivatives $ 0 $ 114