DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amounts (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 28,200	$ 28,540
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign currency option contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	135,700	79,400
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	23,828	27,419
Not Designated as Hedging Instrument [Member] | Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 129,352	$ 161,968