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FAIR VALUE - Quantitative Information (Details) - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Corporate Bonds and Notes | Recurring | Discounted cash flow |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Assets, fair value disclosure | $ 251 | $ 250
Corporate Bonds and Notes | Recurring | Discounted cash flow | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit spread | 1.73% | 1.73%
Corporate Bonds and Notes | Recurring | Discounted cash flow | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit spread | 1.73% | 1.73%
Corporate Bonds and Notes | Recurring | Discounted cash flow | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit spread | 1.73% | 1.73%
Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 3,344 | $ 2,850
Other real estate owned: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | 255 | 344
Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | 255 |
Derivative Liabilities | Recurring | Historical trend |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Liabilities, fair value disclosure | $ 65 | $ 68
Derivative Liabilities | Recurring | Historical trend | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 4.92% | 4.92%
Derivative Liabilities | Recurring | Historical trend | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 4.92% | 4.92%
Derivative Liabilities | Recurring | Historical trend | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 4.92% | 4.92%
Commercial mortgages | Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 2,599 | $ 2,631
Commercial mortgages | Impaired Loans: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 745 |
Commercial mortgages | 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 | Impaired Loans: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 40.04% |
Commercial mortgages | Impaired Loans: | Non-recurring | Sales comparison | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 17.05% |
Commercial mortgages | Impaired Loans: | Non-recurring | Income approach | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Capitalization Rate | 9.00% | 9.00%
Commercial mortgages | Impaired Loans: | Non-recurring | Income approach | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Capitalization Rate | 10.00% | 10.00%
Commercial mortgages | Impaired Loans: | Non-recurring | Income approach | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Capitalization Rate | 9.52% | 9.52%
Home equity lines and loans | Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value |  | $ 219
Home equity lines and loans | Impaired Loans: | Non-recurring | Sales comparison | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value |  | 22.98%
Home equity lines and loans | Impaired Loans: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value |  | 22.98%
Home equity lines and loans | Impaired Loans: | Non-recurring | Sales comparison | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value |  | 22.98%
Residential mortgages | 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%
Residential mortgages | Other real estate owned: | Non-recurring | Sales comparison | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 36.37% | 48.17%
Residential mortgages | 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 | 29.88% | 30.50%

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