INVESTMENT SECURITIES - Unrealized Loss on Investments (Details 2) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 71,924	$ 10,682
Less than 12 Months, Unrealized Losses	(3,586)	(65)
12 Months or More Fair Value	1,268	1,197
12 Months or More Unrealized Losses	(398)	(522)
Total Fair Value	73,192	11,879
Total Unrealized Losses	(3,984)	(587)
Federal agencies
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	24,328	3,979
Less than 12 Months, Unrealized Losses	(1,146)	(21)
12 Months or More Fair Value
12 Months or More Unrealized Losses
Total Fair Value	24,328	3,979
Total Unrealized Losses	(1,146)	(21)
State and municipal
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	16,534	3,856
Less than 12 Months, Unrealized Losses	(1,309)	(34)
12 Months or More Fair Value
12 Months or More Unrealized Losses
Total Fair Value	16,534	3,856
Total Unrealized Losses	(1,309)	(34)
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	30,065	2,847
Less than 12 Months, Unrealized Losses	(1,129)	(10)
12 Months or More Fair Value
12 Months or More Unrealized Losses
Total Fair Value	30,065	2,847
Total Unrealized Losses	(1,129)	(10)
Corporate
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	997
Less than 12 Months, Unrealized Losses	(2)
12 Months or More Fair Value	1,268	1,197
12 Months or More Unrealized Losses	(398)	(522)
Total Fair Value	2,265	1,197
Total Unrealized Losses	$ (400)	$ (522)