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LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | $ 15,208 | $ 12,043
Loans Past Due 90 Days or More and Still Accruing | 36 | 13
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 14,571 | 17,873
Loans Not Past Due | 1,240,219 | 1,184,191
Total recorded investment in loans | 1,255,796 | 1,203,482
30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,802 | 4,969
60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,988 | 6,383
90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 6,781 | 6,521
Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 1,006 | 1,418
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 1,006 | 1,418
Commercial and agricultural: |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 189,939 | 177,027
Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Commercial Mortgages |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 606,242 | 570,156
Commercial Mortgages | Loans acquired with deteriorated credit quality |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 1,006 | 1,323
Commercial Mortgages | Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 1,307 | 19
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,288 | 1,177
Loans Not Past Due | 56,406 | 45,333
Total recorded investment in loans | 57,694 | 46,510
Commercial Mortgages | Construction | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Commercial Mortgages | Construction | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 1,177
Commercial Mortgages | Construction | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,288 | 0
Commercial Mortgages | Construction | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Commercial Mortgages | Commercial mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 8,752 | 5,454
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 6,248 | 7,524
Loans Not Past Due | 541,294 | 514,799
Total recorded investment in loans | 548,548 | 523,646
Commercial Mortgages | Commercial mortgages | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 493 | 652
Commercial Mortgages | Commercial mortgages | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,208 | 4,460
Commercial Mortgages | Commercial mortgages | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 2,547 | 2,412
Commercial Mortgages | Commercial mortgages | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 1,006 | 1,323
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 1,006 | 1,323
Residential mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 3,278 | 4,201
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,624 | 4,919
Loans Not Past Due | 197,493 | 193,951
Total recorded investment in loans | 201,117 | 198,965
Residential mortgages | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,373 | 2,100
Residential mortgages | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 485 | 436
Residential mortgages | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,766 | 2,383
Residential mortgages | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 95
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 95
Consumer loans: |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 258,498 | 257,334
Consumer loans: | Loans acquired with deteriorated credit quality |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Consumer loans: | Credit cards |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Loans Past Due 90 Days or More and Still Accruing | 27 | 11
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 46 | 23
Loans Not Past Due | 1,357 | 1,453
Total recorded investment in loans | 1,403 | 1,476
Consumer loans: | Credit cards | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 6 | 3
Consumer loans: | Credit cards | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 13 | 9
Consumer loans: | Credit cards | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 27 | 11
Consumer loans: | Credit cards | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Consumer loans: | Home equity lines and loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 1,181 | 1,670
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,115 | 1,376
Loans Not Past Due | 96,409 | 97,477
Total recorded investment in loans | 97,524 | 98,853
Consumer loans: | Home equity lines and loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 257 | 227
Consumer loans: | Home equity lines and loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 98 | 0
Consumer loans: | Home equity lines and loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 760 | 1,149
Consumer loans: | Home equity lines and loans | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Consumer loans: | Indirect consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 673 | 654
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 2,165 | 2,602
Loans Not Past Due | 140,967 | 137,391
Total recorded investment in loans | 143,132 | 139,993
Consumer loans: | Indirect consumer loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,616 | 1,773
Consumer loans: | Indirect consumer loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 165 | 287
Consumer loans: | Indirect consumer loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 384 | 542
Consumer loans: | Indirect consumer loans | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Consumer loans: | Direct consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 17 | 45
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 54 | 83
Loans Not Past Due | 16,385 | 16,929
Total recorded investment in loans | 16,439 | 17,012
Consumer loans: | Direct consumer loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 51 | 54
Consumer loans: | Direct consumer loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3 | 7
Consumer loans: | Direct consumer loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 22
Consumer loans: | Direct consumer loans | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Commercial and industrial | Commercial and agricultural: |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Loans Past Due 90 Days or More and Still Accruing | 9 | 2
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 31 | 169
Loans Not Past Due | 189,376 | 176,497
Total recorded investment in loans | 189,407 | 176,666
Commercial and industrial | Commercial and agricultural: | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 6 | 160
Commercial and industrial | Commercial and agricultural: | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 16 | 7
Commercial and industrial | Commercial and agricultural: | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 9 | 2
Commercial and industrial | Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 0 | 0
Agricultural | Commercial and agricultural: |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Loans Not Past Due | 532 | 361
Total recorded investment in loans | 532 | 361
Agricultural | Commercial and agricultural: | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Agricultural | Commercial and agricultural: | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Agricultural | Commercial and agricultural: | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Agricultural | Commercial and agricultural: | Loans acquired with deteriorated credit quality |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | $ 0 | $ 0

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