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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, 2018 | Dec. 31, 2017
Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 12 | $ 507
Other real estate owned: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | 727 | 1,940
Derivative Liabilities | Recurring | Historical trend |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Liabilities, fair value disclosure | $ 13 | $ 75
Derivative Liabilities | Recurring | Historical trend | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 8.04% | 5.67%
Derivative Liabilities | Recurring | Historical trend | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 8.04% | 5.67%
Derivative Liabilities | Recurring | Historical trend | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 8.04% | 5.67%
Commercial and Industrial | Impaired Loans: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 12 | $ 96
Commercial and Industrial | Impaired Loans: | Non-recurring | Sales comparison | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 0.00% | 0.00%
Commercial and Industrial | Impaired Loans: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 0.00% | 36.07%
Commercial and Industrial | Impaired Loans: | Non-recurring | Sales comparison | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 0.00% | 33.02%
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 | 10.00% | 10.00%
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 | 22.00% | 22.95%
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 | 14.56% | 19.75%
Commercial mortgages, other | Impaired Loans: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value |  | $ 411
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 |  | 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 |  | 89.98%
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 |  | 51.35%
Commercial mortgages, other | Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 375 | $ 1,483
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% | 17.28%
Residential mortgages | Other real estate owned: | Non-recurring | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 39.78% | 27.97%
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 | 22.94% | 20.77%
Residential mortgages | Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 204 | $ 382
Home equity lines and loans | Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 148 | $ 75
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%

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