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DERIVATIVE FINANCIAL INSTRUMENTS (Fair Value of Derivative Instruments) (Details) - Foreign exchange contracts - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Financial collateral (including cash collateral) required to be posted $ 0  
Designated as hedging instruments | Cash Flow Hedging | Prepaid expenses and other current assets    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 1,189 $ 181
Designated as hedging instruments | Cash Flow Hedging | Accrued expenses and other current liabilities    
Derivatives, Fair Value [Line Items]    
Liability Derivatives $ 1,291 $ 3,475