DERIVATIVE INSTRUMENTS Notional (Details) - Sep. 30, 2017 - Designated as Hedging Instrument - Cash Flow Hedging - Forward Contracts PHP in Thousands, CAD in Thousands, $ in Thousands	USD ($)	PHP	CAD
CAN
Derivative [Line Items]
Derivative, Notional Amount	$ 8,808		CAD 11,600
PHP
Derivative [Line Items]
Derivative, Notional Amount	29,419	PHP 1,518,100
USD
Derivative [Line Items]
Derivative, Notional Amount	$ 38,227