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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Fair Value of Derivative Instruments in the Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Fair Value of Derivative Instruments
Derivative Assets	$ 3,799		$ 3,799		$ 2,758
Derivative Liabilities	137		137		401
Foreign Exchange Contract, Amount of Gain (Loss) Recognized in Income on Derivative, not designated as hedging instruments	(940)	$ (251)	807	$ (514)
Foreign Exchange Contracts
Fair Value of Derivative Instruments
Aggregate amount of forward exchange contracts	49,400		49,400
Foreign Exchange Contract, Amount of Gain (Loss) Recognized in Income on Derivative, not designated as hedging instruments	(940)	$ (251)	807	$ (514)
Derivative Contracts Not Designated as Hedging Instruments
Fair Value of Derivative Instruments
Derivative Assets	747		747		206
Derivative Liabilities	137		137		401
Derivative Contracts Not Designated as Hedging Instruments \| Foreign Exchange Contracts \| Prepaid and other
Fair Value of Derivative Instruments
Derivative Assets	747		747		206
Derivative Contracts Not Designated as Hedging Instruments \| Foreign Exchange Contracts \| Accounts payable and accrued liabilities
Fair Value of Derivative Instruments
Derivative Liabilities	137		137		401
Derivative Contracts Designated as Hedging Instruments
Fair Value of Derivative Instruments
Derivative Assets	3,052		3,052		2,552
Derivative Contracts Designated as Hedging Instruments \| Cross Currency Swap Contract \| Prepaid and other
Fair Value of Derivative Instruments
Derivative Assets	$ 3,052		$ 3,052		$ 2,552