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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, 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 |  | $ 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%
Corporate Bonds and Notes | Recurring | Discounted cash flow | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit spread |  | 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%
Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 3,242 | $ 2,850
Other real estate owned: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | 179 | 344
Other real estate owned: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | 179 | 344
Derivative Liabilities | Recurring | Historical trend |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Liabilities, fair value disclosure | $ 71 | $ 68
Derivative Liabilities | Recurring | Historical trend | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 5.15% | 4.92%
Derivative Liabilities | Recurring | Historical trend | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 5.15% | 4.92%
Derivative Liabilities | Recurring | Historical trend | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Credit default rate | 5.15% | 4.92%
Commercial and Industrial | Impaired Loans: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 85 |
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 | 36.07% |
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 | 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 | 36.07% |
Commercial and Industrial | Impaired Loans: | Non-recurring | Income approach | Minimum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 5.00% |
Commercial and Industrial | Impaired Loans: | Non-recurring | Income approach | Maximum |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 5.00% |
Commercial and Industrial | Impaired Loans: | Non-recurring | Income approach | Weighted Average |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Discount to appraised value | 5.00% |
Commercial mortgages, other | Impaired Loans: | Non-recurring |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value |  | $ 2,631
Commercial mortgages, other | Impaired Loans: | Non-recurring | Sales comparison |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 707 |
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 | 44.52% |
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 | 20.34% |
Commercial mortgages, other | Impaired Loans: | Non-recurring | Income approach |  |
Information related to Level 3 non-recurring fair value measurement [Abstract] |  |
Fair value | $ 2,450 |
Commercial mortgages, other | 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, other | 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, other | 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 | 17.28% | 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 | 27.97% | 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 | 20.73% | 30.50%

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- Definition Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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