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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Credit Exposure (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | $ 1,359,544 | $ 1,243,925 | $ 1,067,377
Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 1,329,802 | 1,217,152 |
Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 23,213 | 11,885 |
Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 6,529 | 14,752 |
Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 136 |
Commercial and industrial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 197,508 | 223,712 | 181,716
Commercial and industrial | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 196,890 | 218,690 |
Commercial and industrial | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 348 | 4,299 |
Commercial and industrial | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 270 | 706 |
Commercial and industrial | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 17 |
Construction and development |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 196,774 | 129,631 | 122,904
Construction and development | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 196,515 | 127,802 |
Construction and development | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 259 | 4 |
Construction and development | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 1,825 |
Construction and development | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 0 |
Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 418,137 | 368,077 | 301,910
Commercial real estate | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 412,488 | 360,591 |
Commercial real estate | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 1,135 | 2,021 |
Commercial real estate | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 4,514 | 5,465 |
Commercial real estate | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 0 |
Farmland |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 59,023 | 62,366 | 47,668
Farmland | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 58,623 | 61,717 |
Farmland | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 226 | 248 |
Farmland | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 174 | 401 |
Farmland | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 0 |
1-4 family residential |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 374,371 | 361,665 | 312,306
1-4 family residential | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 373,154 | 352,196 |
1-4 family residential | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 442 | 4,311 |
1-4 family residential | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 775 | 5,121 |
1-4 family residential | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 37 |
Multi-family residential |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 36,574 | 26,079 | 30,395
Multi-family residential | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 16,073 | 25,871 |
Multi-family residential | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 20,284 | 0 |
Multi-family residential | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 217 | 208 |
Multi-family residential | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 0 |
Consumer and Overdrafts |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 51,561 | 53,494 |
Consumer and Overdrafts | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 51,409 | 52,320 |
Consumer and Overdrafts | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 65 | 524 |
Consumer and Overdrafts | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 87 | 568 |
Consumer and Overdrafts | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 0 | 82 |
Agricultural |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 25,596 | 18,901 | $ 19,524
Agricultural | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 24,650 | 17,965 |
Agricultural | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 454 | 478 |
Agricultural | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | 492 | 458 |
Agricultural | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans | $ 0 | $ 0 |

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