DERIVATIVE FINANCIAL INSTRUMENTS (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	$ (1,076)	$ 2,930
Designated as Hedging Instrument | Interest rate swaps | Interest Expense
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	(1,076)	2,930
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	856	(570)	42
Not Designated as Hedging Instrument | Equity swap agreements | Noninterest Expense
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	2	2	(138)
Not Designated as Hedging Instrument | Foreign exchange options | Noninterest Income
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	389	(392)
Not Designated as Hedging Instrument | Foreign exchange options | Noninterest Expense
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	101	16
Not Designated as Hedging Instrument | Interest rate swaps | Noninterest Income
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	592	(447)
Not Designated as Hedging Instrument | Short-term Foreign Exchange | Noninterest Income
Derivative Instruments, Gain (Loss)
Net (losses) gains on derivative instruments	$ (228)	$ 251	$ 180