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LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowances (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Dec. 31, 2016
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | $ 14,960 | $ 14,527 | $ 14,253 | $ 14,260 |  |
Charge-offs | (447) | (339) | (892) | (790) |  |
Recoveries | 170 | 92 | 282 | 215 |  |
Net recoveries (charge-offs) | (277) | (247) | (610) | (575) |  |
Provision | 421 | 388 | 1,461 | 983 |  |
Ending balance | 15,104 | 14,668 | 15,104 | 14,668 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | $ 970 | $ 876
Collectively evaluated for impairment |  |  |  |  | 14,104 | 13,293
Total ending allowance balance | 14,960 | 14,527 | 14,253 | 14,260 | 15,104 | 14,253
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 13,108 | 11,926
Loans collectively evaluated for impairment |  |  |  |  | 1,241,682 | 1,190,138
Total ending loans balance |  |  |  |  | 1,255,796 | 1,203,482
Loans acquired with deteriorated credit quality |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  | 84 |  |  |
Ending balance | 30 |  | 30 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Total ending allowance balance | 30 |  | 84 |  | 30 | 84
Loans [Abstract] |  |  |  |  |  |
Total ending loans balance |  |  |  |  | 1,006 | 1,418
Commercial and agricultural: |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 1,650 | 1,795 | 1,589 | 1,831 |  |
Charge-offs | (2) | (9) | (7) | (17) |  |
Recoveries | 36 | 18 | 61 | 50 |  |
Net recoveries (charge-offs) | 34 | 9 | 54 | 33 |  |
Provision | 199 | (33) | 240 | (93) |  |
Ending balance | 1,883 | 1,771 | 1,883 | 1,771 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 84 | 0
Collectively evaluated for impairment |  |  |  |  | 1,799 | 1,589
Total ending allowance balance | 1,650 | 1,795 | 1,589 | 1,831 | 1,883 | 1,589
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 772 | 693
Loans collectively evaluated for impairment |  |  |  |  | 189,167 | 176,334
Total ending loans balance |  |  |  |  | 189,939 | 177,027
Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  | 0 |  |  |
Ending balance | 0 |  | 0 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Total ending allowance balance | 0 |  | 0 |  | 0 | 0
Loans [Abstract] |  |  |  |  |  |
Total ending loans balance |  |  |  |  | 0 | 0
Commercial Mortgages |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 7,749 | 7,532 | 7,270 | 7,112 |  |
Charge-offs | 0 | 0 | 0 | 0 |  |
Recoveries | 2 | 2 | 3 | 9 |  |
Net recoveries (charge-offs) | 2 | 2 | 3 | 9 |  |
Provision | 27 | 220 | 505 | 633 |  |
Ending balance | 7,778 | 7,754 | 7,778 | 7,754 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 886 | 735
Collectively evaluated for impairment |  |  |  |  | 6,862 | 6,476
Total ending allowance balance | 7,749 | 7,532 | 7,270 | 7,112 | 7,778 | 7,270
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 11,823 | 10,382
Loans collectively evaluated for impairment |  |  |  |  | 593,413 | 558,451
Total ending loans balance |  |  |  |  | 606,242 | 570,156
Commercial Mortgages | Loans acquired with deteriorated credit quality |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  | 59 |  |  |
Ending balance | 30 |  | 30 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Total ending allowance balance | 30 |  | 59 |  | 30 | 59
Loans [Abstract] |  |  |  |  |  |
Total ending loans balance |  |  |  |  | 1,006 | 1,323
Residential mortgages |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 1,512 | 1,482 | 1,523 | 1,464 |  |
Charge-offs | (48) | (58) | (60) | (58) |  |
Recoveries | 13 | 0 | 30 | 0 |  |
Net recoveries (charge-offs) | (35) | (58) | (30) | (58) |  |
Provision | 40 | 80 | 24 | 98 |  |
Ending balance | 1,517 | 1,504 | 1,517 | 1,504 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 0 | 0
Collectively evaluated for impairment |  |  |  |  | 1,517 | 1,498
Total ending allowance balance | 1,512 | 1,482 | 1,523 | 1,464 | 1,517 | 1,523
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 443 | 396
Loans collectively evaluated for impairment |  |  |  |  | 200,674 | 198,474
Total ending loans balance |  |  |  |  | 201,117 | 198,965
Residential mortgages | Loans acquired with deteriorated credit quality |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  | 25 |  |  |
Ending balance | 0 |  | 0 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Total ending allowance balance | 0 |  | 25 |  | 0 | 25
Loans [Abstract] |  |  |  |  |  |
Total ending loans balance |  |  |  |  | 0 | 95
Consumer loans: |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 4,049 | 3,718 | 3,871 | 3,853 |  |
Charge-offs | (397) | (272) | (825) | (715) |  |
Recoveries | 119 | 72 | 188 | 156 |  |
Net recoveries (charge-offs) | (278) | (200) | (637) | (559) |  |
Provision | 155 | 121 | 692 | 345 |  |
Ending balance | 3,926 | 3,639 | 3,926 | 3,639 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 0 | 141
Collectively evaluated for impairment |  |  |  |  | 3,926 | 3,730
Total ending allowance balance | 4,049 | $ 3,718 | 3,871 | $ 3,853 | 3,926 | 3,871
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 70 | 455
Loans collectively evaluated for impairment |  |  |  |  | 258,428 | 256,879
Total ending loans balance |  |  |  |  | 258,498 | 257,334
Consumer loans: | Loans acquired with deteriorated credit quality |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  | 0 |  |  |
Ending balance | 0 |  | 0 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Total ending allowance balance | $ 0 |  | $ 0 |  | 0 | 0
Loans [Abstract] |  |  |  |  |  |
Total ending loans balance |  |  |  |  | $ 0 | $ 0

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