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FAIR VALUE - Quantitative Information (Details) - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 512 | $ 1,554
Other real estate owned: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 586 | $ 517
Commercial and Industrial | Other real estate owned: | Non-recurring | Sales comparison | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 42.28% | 20.80%
Commercial and Industrial | Other real estate owned: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 42.28% | 20.80%
Commercial and Industrial | Other real estate owned: | Non-recurring | Sales comparison | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 42.28% | 20.80%
Commercial mortgages, other | Impaired Loans: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 512 | $ 1,554
Commercial mortgages, other | Impaired Loans: | Non-recurring | Sales comparison | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 13.30% | 10.00%
Commercial mortgages, other | Impaired Loans: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 13.30% | 10.00%
Commercial mortgages, other | Impaired Loans: | Non-recurring | Sales comparison | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 13.30% | 10.00%
Commercial mortgages, other | Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 416 | $ 111
Residential mortgages | Other real estate owned: | Non-recurring | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 20.80% | 20.80%
Residential mortgages | Other real estate owned: | Non-recurring | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 20.80% | 35.29%
Residential mortgages | Other real estate owned: | Non-recurring | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 20.80% | 24.09%
Residential mortgages | Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 126 | $ 284
Home equity lines and loans | Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 44 | $ 122
Home equity lines and loans | Other real estate owned: | Non-recurring | Sales comparison | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 20.80% | 20.80%
Home equity lines and loans | Other real estate owned: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 20.80% | 20.80%
Home equity lines and loans | Other real estate owned: | Non-recurring | Sales comparison | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 20.80% | 20.80%
Derivative Liabilities | Recurring | Historical trend |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Liabilities, fair value disclosure | $ 211 | $ 365
Derivative Liabilities | Recurring | Historical trend | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 0.59% | 7.30%
Derivative Liabilities | Recurring | Historical trend | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 6.59% | 7.30%
Derivative Liabilities | Recurring | Historical trend | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 1.18% | 7.30%

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