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LOANS AND ALLOWANCE FOR LOAN LOSSES, Troubled Debt Restructuring by Portfolio Segment (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) loan | Sep. 30, 2017 USD ($) loan | Sep. 30, 2018 USD ($) loan | Sep. 30, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | loan | 2 | 3 | 3 | 5
Pre-Modification Outstanding Recorded Investment | $ 234,000 | $ 429,000 | $ 397,000 | $ 895,000
Post-Modification Outstanding Recorded Investment | 234,000 | 448,000 | 420,000 | 914,000
Specific Reserve | $ 57,000 | $ 29,000 | 96,000 | $ 44,000
Home Equity Loan |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | loan |  |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 315,000
Post-Modification Outstanding Recorded Investment |  |  |  | $ 315,000
Specific Reserve |  |  | $ 114,000 |
Residential Real Estate |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | loan | 1 | 1 | 2 | 1
Pre-Modification Outstanding Recorded Investment | $ 68,000 | $ 148,000 | $ 231,000 | $ 148,000
Post-Modification Outstanding Recorded Investment | 68,000 | 156,000 | 254,000 | 156,000
Specific Reserve | $ 12,000 | $ 29,000 | $ 51,000 | $ 29,000
Residential Real Estate | Contractual Interest Rate Reduction [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | loan |  | 1 |  | 1
Pre-Modification Outstanding Recorded Investment |  | $ 134,000 |  | $ 134,000
Post-Modification Outstanding Recorded Investment |  | $ 145,000 |  | $ 145,000
Residential Real Estate | Extended Maturity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | loan |  | 1 |  | 2
Pre-Modification Outstanding Recorded Investment |  | $ 147,000 |  | $ 298,000
Post-Modification Outstanding Recorded Investment |  | $ 147,000 |  | 298,000
Specific Reserve |  |  |  | $ 15,000
Residential Real Estate | Payment Deferral [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | loan | 1 |  | 1 |
Pre-Modification Outstanding Recorded Investment | $ 166,000 |  | $ 166,000 |
Post-Modification Outstanding Recorded Investment | 166,000 |  | 166,000 |
Specific Reserve | $ 45,000 |  | $ 45,000 |

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