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LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowances (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Dec. 31, 2016
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | $ 14,253 | $ 14,260 |  |
Charge-offs | (444) | (451) |  |
Recoveries | 111 | 123 |  |
Net recoveries (charge-offs) | (333) | (328) |  |
Provision | 1,040 | 595 |  |
Ending balance | 14,960 | 14,527 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment |  |  | $ 998 | $ 876
Collectively evaluated for impairment |  |  | 13,878 | 13,293
Total ending allowance balance | 14,253 | 14,260 | 14,960 | 14,253
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment |  |  | 13,440 | 11,926
Loans collectively evaluated for impairment |  |  | 1,222,577 | 1,190,138
Total ending loans balance |  |  | 1,237,387 | 1,203,482
Loans acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 84 |  |  |
Ending balance | 84 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Total ending allowance balance | 84 |  | 84 | 84
Loans [Abstract] |  |  |  |
Total ending loans balance |  |  | 1,370 | 1,418
Commercial and agricultural: |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 1,589 | 1,831 |  |
Charge-offs | (5) | (8) |  |
Recoveries | 24 | 32 |  |
Net recoveries (charge-offs) | 19 | 24 |  |
Provision | 42 | (60) |  |
Ending balance | 1,650 | 1,795 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment |  |  | 0 | 0
Collectively evaluated for impairment |  |  | 1,650 | 1,589
Total ending allowance balance | 1,589 | 1,831 | 1,650 | 1,589
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment |  |  | 649 | 693
Loans collectively evaluated for impairment |  |  | 177,885 | 176,334
Total ending loans balance |  |  | 178,534 | 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 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Total ending allowance balance | 0 |  | 0 | 0
Loans [Abstract] |  |  |  |
Total ending loans balance |  |  | 0 | 0
Commercial Mortgages |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 7,270 | 7,112 |  |
Charge-offs | 0 | 0 |  |
Recoveries | 1 | 7 |  |
Net recoveries (charge-offs) | 1 | 7 |  |
Provision | 478 | 413 |  |
Ending balance | 7,749 | 7,532 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment |  |  | 845 | 735
Collectively evaluated for impairment |  |  | 6,845 | 6,476
Total ending allowance balance | 7,270 | 7,112 | 7,749 | 7,270
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment |  |  | 11,969 | 10,382
Loans collectively evaluated for impairment |  |  | 590,922 | 558,451
Total ending loans balance |  |  | 604,166 | 570,156
Commercial Mortgages | Loans acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 59 |  |  |
Ending balance | 59 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Total ending allowance balance | 59 |  | 59 | 59
Loans [Abstract] |  |  |  |
Total ending loans balance |  |  | 1,275 | 1,323
Residential mortgages |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 1,523 | 1,464 |  |
Charge-offs | (12) | 0 |  |
Recoveries | 17 | 0 |  |
Net recoveries (charge-offs) | 5 | 0 |  |
Provision | (16) | 18 |  |
Ending balance | 1,512 | 1,482 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment |  |  | 0 | 0
Collectively evaluated for impairment |  |  | 1,487 | 1,498
Total ending allowance balance | 1,523 | 1,464 | 1,512 | 1,523
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment |  |  | 390 | 396
Loans collectively evaluated for impairment |  |  | 198,007 | 198,474
Total ending loans balance |  |  | 198,492 | 198,965
Residential mortgages | Loans acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 25 |  |  |
Ending balance | 25 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Total ending allowance balance | 25 |  | 25 | 25
Loans [Abstract] |  |  |  |
Total ending loans balance |  |  | 95 | 95
Consumer Loans |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |
Beginning balance | 3,871 | 3,853 |  |
Charge-offs | (427) | (443) |  |
Recoveries | 69 | 84 |  |
Net recoveries (charge-offs) | (358) | (359) |  |
Provision | 536 | 224 |  |
Ending balance | 4,049 | 3,718 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Individually evaluated for impairment |  |  | 153 | 141
Collectively evaluated for impairment |  |  | 3,896 | 3,730
Total ending allowance balance | 3,871 | $ 3,853 | 4,049 | 3,871
Loans [Abstract] |  |  |  |
Loans individually evaluated for impairment |  |  | 432 | 455
Loans collectively evaluated for impairment |  |  | 255,763 | 256,879
Total ending loans balance |  |  | 256,195 | 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 |  |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |
Total ending allowance balance | $ 0 |  | 0 | 0
Loans [Abstract] |  |  |  |
Total ending loans balance |  |  | $ 0 | $ 0

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