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LOANS AND ASSET QUALITY - Summary of recorded investment amount and related allowance for losses of impaired loans (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) borrower loan | Dec. 31, 2016 USD ($)
Impaired loans with specific reserves: |  |
Recorded Investment | $ 1,739,000 | $ 1,750,000
Principal Balance | 1,768,000 | 1,779,000
Income Recognized | 12,000 | 66,000
Specific Reserve | 810,000 | 530,000
Recorded Investment | 1,818,000 | 1,844,000
Impaired loans with no specific reserve: |  |
Recorded Investment | 3,298,000 | 3,267,000
Principal Balance | 4,106,000 | 4,159,000
Income Recognized | 42,000 | 80,000
Recorded Investment | 4,386,000 | 4,132,000
Commercial Real Estate. |  |
Impaired loans with specific reserves: |  |
Specific Reserve | 219,500 |
Real-estate - mortgage | Residential |  |
Impaired loans with specific reserves: |  |
Recorded Investment | 1,344,654 | 1,393,000
Principal Balance | 1,374,000 | 1,422,000
Income Recognized |  | 58,000
Specific Reserve | 532,378 | 252,000
Recorded Investment | 1,364,000 | 1,442,000
Impaired loans with no specific reserve: |  |
Recorded Investment | 1,203,000 | 1,479,000
Principal Balance | 2,011,000 | 2,219,000
Income Recognized | 13,000 | 21,000
Recorded Investment | 2,377,000 | 2,463,000
Real-estate - mortgage | Commercial Real Estate. |  |
Impaired loans with no specific reserve: |  |
Recorded Investment | 1,312,000 | 1,413,000
Principal Balance | 1,312,000 | 1,565,000
Income Recognized | 29,000 | 59,000
Recorded Investment | $ 1,244,000 | 1,594,000
Consumer and Indirect |  |
Financing Receivable, Impaired [Line Items] |  |
Number of loans | loan | 3 |
Number of borrowers | borrower | 3 |
Impaired loans with specific reserves: |  |
Recorded Investment | $ 174,589 | 128,000
Principal Balance | 175,000 | 128,000
Income Recognized | 4,000 |
Specific Reserve | 57,797 | 50,000
Recorded Investment | 230,000 | 167,000
Impaired loans with no specific reserve: |  |
Recorded Investment | 108,000 | 182,000
Principal Balance | 108,000 | 182,000
Recorded Investment | 104,000 | 75,000
Installment |  |
Impaired loans with no specific reserve: |  |
Recorded Investment | 146,000 | 193,000
Principal Balance | 146,000 | 193,000
Recorded Investment | 130,000 |
Commercial |  |
Impaired loans with specific reserves: |  |
Recorded Investment | 219,000 | 229,000
Principal Balance | 219,000 | 229,000
Income Recognized | 8,000 | 8,000
Specific Reserve | 220,000 | 228,000
Recorded Investment | 224,000 | $ 235,000
Impaired loans with no specific reserve: |  |
Recorded Investment | 529,000 |
Principal Balance | 529,000 |
Recorded Investment | $ 531,000 |

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