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LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowances (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | $ 14,253 | $ 14,260 | $ 13,686 |  |
Charge Offs | (2,571) | (2,830) | (1,631) |  |
Recoveries | 457 | 386 | 634 |  |
Net (charge offs) recoveries | (2,114) | (2,444) | (997) |  |
Provision | 9,022 | 2,437 | 1,571 |  |
Ending balance | 21,161 | 14,253 | 14,260 |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment |  |  |  | $ 5,937 | $ 876
Collectively evaluated for impairment |  |  |  | 15,195 | 13,293
Allowance for loan losses | 14,253 | 14,260 | 13,686 | 21,161 | 14,253
Loans: |  |  |  |  |
Loans individually evaluated for impairment |  |  |  | 13,926 | 11,926
Loans collectively evaluated for impairment |  |  |  | 1,300,864 | 1,190,138
Total ending loans balance |  |  |  | 1,315,582 | 1,203,482
Commercial, and Agricultural |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 1,589 | 1,831 | 1,460 |  |
Charge Offs | (96) | (217) | (186) |  |
Recoveries | 109 | 92 | 96 |  |
Net (charge offs) recoveries | 13 | (125) | (90) |  |
Provision | 5,374 | (117) | 461 |  |
Ending balance | 6,976 | 1,589 | 1,831 |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment |  |  |  | 5,135 | 0
Collectively evaluated for impairment |  |  |  | 1,841 | 1,589
Allowance for loan losses | 1,589 | 1,831 | 1,460 | 6,976 | 1,589
Loans: |  |  |  |  |
Loans individually evaluated for impairment |  |  |  | 6,133 | 693
Loans collectively evaluated for impairment |  |  |  | 193,443 | 176,334
Total ending loans balance |  |  |  | 199,576 | 177,027
Commercial mortgages: |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 7,270 | 7,112 | 6,326 |  |
Charge Offs | (419) | (911) | (104) |  |
Recoveries | 5 | 10 | 131 |  |
Net (charge offs) recoveries | (414) | (901) | 27 |  |
Provision | 1,658 | 1,059 | 759 |  |
Ending balance | 8,514 | 7,270 | 7,112 |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment |  |  |  | 802 | 735
Collectively evaluated for impairment |  |  |  | 7,683 | 6,476
Allowance for loan losses | 7,270 | 7,112 | 6,326 | 8,514 | 7,270
Loans: |  |  |  |  |
Loans individually evaluated for impairment |  |  |  | 7,302 | 10,382
Loans collectively evaluated for impairment |  |  |  | 638,080 | 558,451
Total ending loans balance |  |  |  | 646,174 | 570,156
Residential Mortgages |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 1,523 | 1,464 | 1,572 |  |
Charge Offs | (225) | (65) | (47) |  |
Recoveries | 30 | 0 | 0 |  |
Net (charge offs) recoveries | (195) | (65) | (47) |  |
Provision | (12) | 124 | (61) |  |
Ending balance | 1,316 | 1,523 | 1,464 |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment |  |  |  | 0 | 0
Collectively evaluated for impairment |  |  |  | 1,316 | 1,498
Allowance for loan losses | 1,523 | 1,464 | 1,572 | 1,316 | 1,523
Loans: |  |  |  |  |
Loans individually evaluated for impairment |  |  |  | 427 | 396
Loans collectively evaluated for impairment |  |  |  | 194,510 | 198,474
Total ending loans balance |  |  |  | 194,937 | 198,965
Consumer Loans |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 3,871 | 3,853 | 4,328 |  |
Charge Offs | (1,831) | (1,637) | (1,294) |  |
Recoveries | 313 | 284 | 407 |  |
Net (charge offs) recoveries | (1,518) | (1,353) | (887) |  |
Provision | 2,002 | 1,371 | 412 |  |
Ending balance | 4,355 | 3,871 | 3,853 |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Individually evaluated for impairment |  |  |  | 0 | 141
Collectively evaluated for impairment |  |  |  | 4,355 | 3,730
Allowance for loan losses | 3,871 | 3,853 | $ 4,328 | 4,355 | 3,871
Loans: |  |  |  |  |
Loans individually evaluated for impairment |  |  |  | 64 | 455
Loans collectively evaluated for impairment |  |  |  | 274,831 | 256,879
Total ending loans balance |  |  |  | 274,895 | 257,334
Loans acquired with deteriorated credit quality |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 84 |  |  |  |
Ending balance | 29 | 84 |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Allowance for loan losses | 84 | 84 |  | 29 | 84
Loans: |  |  |  |  |
Total ending loans balance |  |  |  | 792 | 1,418
Loans acquired with deteriorated credit quality | Commercial, and Agricultural |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 0 |  |  |  |
Ending balance | 0 | 0 |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Allowance for loan losses | 0 | 0 |  | 0 | 0
Loans: |  |  |  |  |
Total ending loans balance |  |  |  | 0 | 0
Loans acquired with deteriorated credit quality | Commercial mortgages: |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 59 |  |  |  |
Ending balance | 29 | 59 |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Allowance for loan losses | 59 | 59 |  | 29 | 59
Loans: |  |  |  |  |
Total ending loans balance |  |  |  | 792 | 1,323
Loans acquired with deteriorated credit quality | Residential Mortgages |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 25 |  |  |  |
Ending balance | 0 | 25 |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Allowance for loan losses | 25 | 25 |  | 0 | 25
Loans: |  |  |  |  |
Total ending loans balance |  |  |  | 0 | 95
Loans acquired with deteriorated credit quality | Consumer Loans |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |
Beginning balance: | 0 |  |  |  |
Ending balance | 0 | 0 |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |
Allowance for loan losses | $ 0 | $ 0 |  | 0 | 0
Loans: |  |  |  |  |
Total ending loans balance |  |  |  | $ 0 | $ 0

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