FAIR VALUES - Quantitative Information (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Liabilities, fair value, recurring	$ 140	$ 75
Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	1,456	507
Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 574	$ 1,940
Commercial mortgages | Minimum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value		10.00%
Commercial mortgages | Maximum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value		22.95%
Commercial mortgages | Weighted Average | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value		19.75%
Residential Mortgage | Minimum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	20.80%	17.28%
Residential Mortgage | Maximum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	39.78%	27.97%
Residential Mortgage | Weighted Average | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	22.94%	20.77%
Sales Comparison | Commercial mortgages | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 1,456	$ 411
Sales Comparison | Commercial mortgages | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring		$ 1,483
Sales Comparison | Commercial mortgages | Minimum | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	11.76%	10.00%
Sales Comparison | Commercial mortgages | Maximum | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	11.76%	89.98%
Sales Comparison | Commercial mortgages | Weighted Average | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	11.76%	51.35%
Sales Comparison | Commercial and industrial | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring		$ 96
Sales Comparison | Commercial and industrial | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 213
Sales Comparison | Commercial and industrial | Minimum | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value		0.00%
Sales Comparison | Commercial and industrial | Minimum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	10.00%
Sales Comparison | Commercial and industrial | Maximum | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value		36.07%
Sales Comparison | Commercial and industrial | Maximum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	24.80%
Sales Comparison | Commercial and industrial | Weighted Average | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value		33.02%
Sales Comparison | Commercial and industrial | Weighted Average | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	17.72%
Sales Comparison | Residential Mortgage | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 204	$ 382
Sales Comparison | Home equity lines and loans | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 157	$ 75
Sales Comparison | Home equity lines and loans | Minimum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	20.80%	20.80%
Sales Comparison | Home equity lines and loans | Maximum | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	20.80%	20.80%
Sales Comparison | Home equity lines and loans | Weighted Average | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Fair value inputs, discount to appraised value	20.80%	20.80%
Measurement Input, Discount Rate | Minimum | Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate	0.0746	0.0567
Measurement Input, Discount Rate | Maximum | Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate	0.0746	0.0567
Measurement Input, Discount Rate | Weighted Average | Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate	0.0746	0.0567