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FAIR VALUE - Fair Value of Foreclosed Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016
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Carrying Value | Foreclosed assets remeasured at initial recognition |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | $ 544 | $ 78 | $ 67
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 | 180
Charge-offs | Foreclosed assets remeasured at initial recognition |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | (175) | (11) | (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) | (79)
Fair Value | Foreclosed assets remeasured at initial recognition |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Foreclosed assets | 369 | 67 | 56
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 | $ 101

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