DERIVATIVE FINANCIAL INSTRUMENTS (Details 4) (Derivative instruments not designated as hedging instruments, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative Instruments, Gain (Loss)
Total net gains (losses)	$ 772	$ (3,183)
Foreign exchange options | Foreign exchange income
Derivative Instruments, Gain (Loss)
Total net gains (losses)	199	(119)
Foreign exchange options with embedded derivatives | Other operating expense
Derivative Instruments, Gain (Loss)
Total net gains (losses)	(141)	1
Interest rate swaps and caps | Other operating income
Derivative Instruments, Gain (Loss)
Total net gains (losses)	(594)	(936)
Foreign exchange contracts | Foreign exchange income
Derivative Instruments, Gain (Loss)
Total net gains (losses)	$ 1,308	$ (2,129)