DERIVATIVE INSTRUMENTS (Details) - 9 months ended Sep. 30, 2015 - Foreign exchange contracts PHP in Thousands, CAD in Thousands, $ in Thousands	USD ($)	PHP	CAD
Derivative [Line Items]
Derivatives, notional amount	$ 23,955
Minimum
Derivative [Line Items]
Derivatives, contract period	3 months
Maximum
Derivative [Line Items]
Derivatives, contract period	12 months
Canadian Dollar
Derivative [Line Items]
Derivatives, notional amount	$ 5,233		CAD 6,390
Philippine Peso
Derivative [Line Items]
Derivatives, notional amount	$ 18,722	PHP 846,330