DERIVATIVE INSTRUMENTS (Details 2) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Counterparty One
Notional amount
Net liability	$ 400
Net asset		$ 2,400
Collateral posted	6,900	20,700
Counterparty Two
Notional amount
Net asset	700	1,600
Collateral held	100	100
Counterparty Three
Notional amount
Net asset	5,200	9,100
Collateral held	33,700	23,600
Free-Standing Derivatives: | Interest rate swaps
Notional amount
Notional	281,300	297,700
Free-Standing Derivatives: | Foreign exchange forward contracts and options
Notional amount
Notional amount of liability	$ 383,238	$ 375,524