DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Derivative Instruments (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Derivative Asset [Abstract]
Gross derivatives	$ 11,594,000	$ 8,626,000
Offsetting derivative assets/liabilities	(2,201,000)	(114,000)
Cash collateral received/posted	(8,306,000)	(7,900,000)
Net derivatives included in the consolidated balance sheets	1,087,000	612,000
Derivative Liability [Abstract]
Gross derivatives	3,320,000	726,000
Offsetting derivative assets/liabilities	(2,201,000)	(114,000)
Cash collateral received/posted	0	(520,000)
Net derivatives included in the consolidated balance sheets	1,119,000	92,000
Financial institution counterparties
Derivative Liability [Abstract]
Net credit exposure	0	30,000
Financial institution counterparties \| Derivatives designated as hedging instruments \| Cash Flow Hedging \| Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Notional Amount	270,000,000	240,000,000
Derivative Asset [Abstract]
Gross derivatives	9,388,000	7,922,000
Derivative Liability [Abstract]
Gross derivatives	457,000	22,000
Financial institution counterparties \| Derivatives designated as hedging instruments \| Fair Value Hedging [Member] \| Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Notional Amount	21,100,000	0
Derivative Asset [Abstract]
Gross derivatives	0	0
Derivative Liability [Abstract]
Gross derivatives	657,000	0
Financial institution counterparties \| Derivatives designated as non-hedging instruments \| Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Notional Amount	93,967,000	67,220,000
Derivative Asset [Abstract]
Gross derivatives	1,119,000	92,000
Derivative Liability [Abstract]
Gross derivatives	1,087,000	612,000
Customer counterparties
Derivative Liability [Abstract]
Net credit exposure	1,100,000	612,000
Customer counterparties \| Derivatives designated as non-hedging instruments \| Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Notional Amount	93,967,000	67,220,000
Derivative Asset [Abstract]
Gross derivatives	1,087,000	612,000
Derivative Liability [Abstract]
Gross derivatives	$ 1,119,000	$ 92,000

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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