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FAIR VALUE - Fair Value of Foreclosed Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Carrying Value | Other real estate owned remeasured at initial recognition: |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | $ 1,082 | $ 78 |
Carrying Value | Foreclosed assets remeasured subsequent to initial recognition: |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | 0 | 170 | $ 167
Charge-offs | Other real estate owned remeasured at initial recognition: |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | (195) | (11) |
Charge-offs | Foreclosed assets remeasured subsequent to initial recognition: |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | 0 | (69) | (102)
Fair Value | Other real estate owned remeasured at initial recognition: |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | 887 | 67 |
Fair Value | Foreclosed assets remeasured subsequent to initial recognition: |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | $ 0 | $ 101 | $ 65

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