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LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Allowance for Loan Losses Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017 | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | $ 12,859 | $ 11,484 | $ 11,484 |  |  |
Provision for loan losses | $ 500 | $ 800 | 1,750 | 2,250 | 2,850 |  |  |
Loans charged-off |  |  | (411) | (1,479) | (2,458) |  |  |
Recoveries |  |  | 243 | 273 | 983 |  |  |
Ending balance | 14,441 | 12,528 | 14,441 | 12,528 | 12,859 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | $ 454 | $ 134 | $ 520
Collectively evaluated for impairment |  |  |  |  |  | 13,987 | 12,725 | 12,008
Ending balance | 14,441 | 12,528 | 12,859 | 11,484 | 11,484 | 14,441 | 12,859 | 12,528
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 11,826 | 6,340 | 6,680
Collectively evaluated for impairment |  |  |  |  |  | 1,640,037 | 1,353,204 | 1,300,695
Ending balance |  |  |  |  |  | 1,651,863 | 1,359,544 | 1,307,375
Commercial and industrial |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 1,581 | 1,592 | 1,592 |  |  |
Provision for loan losses |  |  | 138 | 602 | 272 |  |  |
Loans charged-off |  |  | (66) | (737) | (1,080) |  |  |
Recoveries |  |  | 54 | 116 | 797 |  |  |
Ending balance | 1,707 | 1,573 | 1,707 | 1,573 | 1,581 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 315 | 17 | 19
Collectively evaluated for impairment |  |  |  |  |  | 1,392 | 1,564 | 1,554
Ending balance | 1,707 | 1,573 | 1,581 | 1,592 | 1,592 | 1,707 | 1,581 | 1,573
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 1,584 | 463 | 354
Collectively evaluated for impairment |  |  |  |  |  | 247,174 | 197,045 | 192,309
Ending balance |  |  |  |  |  | 248,758 | 197,508 | 192,663
Construction and development |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 1,724 | 1,161 | 1,161 |  |  |
Provision for loan losses |  |  | 119 | 762 | 563 |  |  |
Loans charged-off |  |  | 0 | 0 | 0 |  |  |
Recoveries |  |  | 0 | 0 | 0 |  |  |
Ending balance | 1,843 | 1,923 | 1,843 | 1,923 | 1,724 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 1,843 | 1,724 | 1,923
Ending balance | 1,843 | 1,923 | 1,724 | 1,161 | 1,161 | 1,843 | 1,724 | 1,923
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 1,684 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 227,623 | 196,774 | 201,067
Ending balance |  |  |  |  |  | 229,307 | 196,774 | 201,067
Commercial real estate |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 4,585 | 3,264 | 3,264 |  |  |
Provision for loan losses |  |  | 1,329 | 1,019 | 1,405 |  |  |
Loans charged-off |  |  | (32) | (84) | (84) |  |  |
Recoveries |  |  | 0 | 0 | 0 |  |  |
Ending balance | 5,882 | 4,199 | 5,882 | 4,199 | 4,585 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 61 | 27 | 31
Collectively evaluated for impairment |  |  |  |  |  | 5,821 | 4,558 | 4,168
Ending balance | 5,882 | 4,199 | 4,585 | 3,264 | 3,264 | 5,882 | 4,585 | 4,199
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 6,360 | 4,258 | 4,029
Collectively evaluated for impairment |  |  |  |  |  | 592,793 | 413,879 | 389,285
Ending balance |  |  |  |  |  | 599,153 | 418,137 | 393,314
Farmland |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 523 | 482 | 482 |  |  |
Provision for loan losses |  |  | 100 | (24) | 41 |  |  |
Loans charged-off |  |  | 0 | 0 | 0 |  |  |
Recoveries |  |  | 0 | 0 | 0 |  |  |
Ending balance | 623 | 458 | 623 | 458 | 523 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 74 | 85 | 85
Collectively evaluated for impairment |  |  |  |  |  | 549 | 438 | 373
Ending balance | 623 | 458 | 523 | 482 | 482 | 623 | 523 | 458
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 218 | 163 | 276
Collectively evaluated for impairment |  |  |  |  |  | 64,991 | 58,860 | 54,073
Ending balance |  |  |  |  |  | 65,209 | 59,023 | 54,349
1-4 family residential |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 3,022 | 3,960 | 3,960 |  |  |
Provision for loan losses |  |  | (161) | (585) | (418) |  |  |
Loans charged-off |  |  | (19) | (307) | (543) |  |  |
Recoveries |  |  | 49 | 21 | 23 |  |  |
Ending balance | 2,891 | 3,089 | 2,891 | 3,089 | 3,022 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 4 | 5 | 145
Collectively evaluated for impairment |  |  |  |  |  | 2,887 | 3,017 | 2,944
Ending balance | 2,891 | 3,089 | 3,022 | 3,960 | 3,960 | 2,891 | 3,022 | 3,089
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 1,571 | 842 | 1,097
Collectively evaluated for impairment |  |  |  |  |  | 390,885 | 373,529 | 364,792
Ending balance |  |  |  |  |  | 392,456 | 374,371 | 365,889
Multi-family residential |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 629 | 281 | 281 |  |  |
Provision for loan losses |  |  | 41 | (15) | 348 |  |  |
Loans charged-off |  |  | 0 | 0 | 0 |  |  |
Recoveries |  |  | 0 | 0 | 0 |  |  |
Ending balance | 670 | 266 | 670 | 266 | 629 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 670 | 629 | 266
Ending balance | 670 | 266 | 629 | 281 | 281 | 670 | 629 | 266
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 217 | 228
Collectively evaluated for impairment |  |  |  |  |  | 38,523 | 36,357 | 23,007
Ending balance |  |  |  |  |  | 38,523 | 36,574 | 23,235
Consumer |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 602 | 585 | 585 |  |  |
Provision for loan losses |  |  | 101 | 149 | 253 |  |  |
Loans charged-off |  |  | (175) | (230) | (344) |  |  |
Recoveries |  |  | 41 | 95 | 108 |  |  |
Ending balance | 569 | 599 | 569 | 599 | 602 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 569 | 602 | 599
Ending balance | 569 | 599 | 602 | 585 | 585 | 569 | 602 | 599
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 53,947 | 51,267 | 51,711
Ending balance |  |  |  |  |  | 53,947 | 51,267 | 51,711
Agricultural |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 187 | 153 | 153 |  |  |
Provision for loan losses |  |  | (3) | 258 | 276 |  |  |
Loans charged-off |  |  | (2) | (4) | (242) |  |  |
Recoveries |  |  | 65 | 0 | 0 |  |  |
Ending balance | 247 | 407 | 247 | 407 | 187 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 240
Collectively evaluated for impairment |  |  |  |  |  | 247 | 187 | 167
Ending balance | 247 | 407 | 187 | 153 | 153 | 247 | 187 | 407
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 409 | 397 | 696
Collectively evaluated for impairment |  |  |  |  |  | 23,775 | 25,199 | 23,753
Ending balance |  |  |  |  |  | 24,184 | 25,596 | 24,449
Overdrafts |  |  |  |  |  |  |  |
Allowance for loan losses: |  |  |  |  |  |  |  |
Beginning balance |  |  | 6 | 6 | 6 |  |  |
Provision for loan losses |  |  | 86 | 84 | 110 |  |  |
Loans charged-off |  |  | (117) | (117) | (165) |  |  |
Recoveries |  |  | 34 | 41 | 55 |  |  |
Ending balance | 9 | 14 | 9 | 14 | 6 |  |  |
Allowance ending balance: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 9 | 6 | 14
Ending balance | $ 9 | $ 14 | $ 6 | $ 6 | $ 6 | 9 | 6 | 14
Loans: |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  | 0 | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  | 326 | 294 | 698
Ending balance |  |  |  |  |  | $ 326 | $ 294 | $ 698

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