DERIVATIVES - Additional Information (Details) (USD $)	9 Months Ended
	Sep. 30, 2014 entity	Dec. 31, 2013 entity
Derivative [Line Items]
Maximum derivative notional position as a percentage of assets	35.00%
Maximum credit exposure as a percentage of capital	3.00%
Maximum single counterparty credit risk exposure	$ 20,000,000
Inerest-bearing deposit liability	821,465,000	913,324,000
Number of counterparties	9	9
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	10,750,000	14,431,000
Outstanding liability from counterparty contracts	49,000	28,000
Credit Derivative Term	5 years
Interest Rate Cash Flow Hedge Asset at Fair Value	200,000	800,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Inerest-bearing deposit liability	250,000,000	100,000,000
Other Credit Derivatives [Member]
Derivative [Line Items]
Inerest-bearing deposit liability	32,300,000	13,300,000
Accrued interest and other liabilities | Derivative [Member]
Derivative [Line Items]
Inerest-bearing deposit liability	697,400,000	561,600,000
Derivative Financial Instruments, Liabilities, Fair Value Disclosure	$ 8,400,000	$ 9,300,000