FAIR VALUES - Quantitative Information (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Liabilities, fair value, recurring	$ 357	$ 365
Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring		1,554
Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 237	$ 517
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%	20.80%
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	20.80%	35.29%
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	20.80%	24.09%
Sales Comparison | Commercial mortgages | Non-recurring | Impaired Loans
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring		$ 1,554
Sales Comparison | Commercial mortgages | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 111	$ 111
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		10.00%
Sales Comparison | 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	20.80%	20.80%
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		10.00%
Sales Comparison | 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	20.80%	20.80%
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		10.00%
Sales Comparison | 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	20.80%	20.80%
Sales Comparison | Residential Mortgage | Non-recurring | OREO
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value, recurring	$ 126	$ 284
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		$ 122
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%
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%
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%
Measurement Input, Discount Rate | Minimum | Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate	0.0093	0.0730
Measurement Input, Discount Rate | Maximum | Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate	0.2778	0.0730
Measurement Input, Discount Rate | Weighted Average | Recurring | Derivative liabilities
Fair Value Inputs, Liabilities, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate	0.0227	0.0730