FAIR VALUE MEASUREMENTS (Details 2) (Private label CMOs, USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Activity for assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Balance at the beginning of the period	$ 44,684
Total realized in earnings	1,001
Decrease in unrealized loss in comprehensive income	(648)
Net settlements	(4,120)
Balance at the end of the period	$ 40,917
Recurring basis | Level 3 | Minimum
Information about quantitative unobservable inputs, assumptions and valuation methodology used to evaluate the fair values
Voluntary annual prepayment speeds (as a percent)	0.00%
Annual default rates (as a percent)	0.00%
Loss severity rates (as a percent)	0.00%
Discount rates (as a percent)	0.00%
Recurring basis | Level 3 | Maximum
Information about quantitative unobservable inputs, assumptions and valuation methodology used to evaluate the fair values
Voluntary annual prepayment speeds (as a percent)	30.50%
Annual default rates (as a percent)	29.50%
Loss severity rates (as a percent)	66.30%
Discount rates (as a percent)	11.90%
Recurring basis | Level 3 | Weighted average
Information about quantitative unobservable inputs, assumptions and valuation methodology used to evaluate the fair values
Voluntary annual prepayment speeds (as a percent)	9.40%
Annual default rates (as a percent)	3.20%
Loss severity rates (as a percent)	34.60%
Discount rates (as a percent)	5.20%