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LOANS AND ALLOWANCE FOR LOAN LOSSES - Troubled Debt Restructuring (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract | Dec. 31, 2017 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |  |
Total | $ 727,000 |  | $ 657,000
Specific reserves on TDRs | $ 11,000 |  | $ 17,000
Troubled Debt Restructurings: |  |  |
Number of Contracts | contract | 2 | 2 | 3
Pre-Modification Outstanding Recorded Investment | $ 93,000 | $ 45,000 | $ 392,000
Post-Modification Outstanding Recorded Investment | $ 93,000 | 26,000 | $ 375,000
Increase in allowance for loan losses due to TDRs |  | 0 |
Troubled debt restructuring charge-offs |  | $ 0 |
Commercial and industrial |  |  |
Troubled Debt Restructurings: |  |  |
Number of Contracts | contract |  | 1 | 2
Pre-Modification Outstanding Recorded Investment |  | $ 34,000 | $ 381,000
Post-Modification Outstanding Recorded Investment |  | $ 15,000 | $ 364,000
1-4 family residential |  |  |
Troubled Debt Restructurings: |  |  |
Number of Contracts | contract | 1 | 1 | 1
Pre-Modification Outstanding Recorded Investment | $ 15,000 | $ 11,000 | $ 11,000
Post-Modification Outstanding Recorded Investment | $ 15,000 | $ 11,000 | 11,000
Farmland |  |  |
Troubled Debt Restructurings: |  |  |
Number of Contracts | contract | 1 |  |
Pre-Modification Outstanding Recorded Investment | $ 78,000 |  |
Post-Modification Outstanding Recorded Investment | 78,000 |  |
Nonaccrual TDRs |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Total | 0 |  | 0
Performing TDRs |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Total | $ 727,000 |  | $ 657,000

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- Definition Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References No definition available. + Details
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