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LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | $ 19,516 | $ 12,254
Loans Past Due 90 Days or More and Still Accruing | 57 | 19
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 12,548 | 14,367
Loans Not Past Due | 1,279,875 | 1,301,242
Total recorded investment in loans | 1,292,423 | 1,315,609
30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 7,811 | 10,688
60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 992 | 1,207
90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,745 | 2,472
Commercial and agricultural |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 207,469 | 203,412
Commercial Mortgages |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 650,602 | 662,988
Commercial Mortgages | Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 94 | 109
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Loans Not Past Due | 39,734 | 54,626
Total recorded investment in loans | 39,734 | 54,626
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 | 0
Commercial Mortgages | Construction | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Commercial Mortgages | Commercial mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 13,580 | 5,529
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 4,806 | 6,600
Loans Not Past Due | 606,062 | 601,762
Total recorded investment in loans | 610,868 | 608,362
Commercial Mortgages | Commercial mortgages | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 2,593 | 6,273
Commercial Mortgages | Commercial mortgages | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 87 | 158
Commercial Mortgages | Commercial mortgages | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 2,126 | 169
Residential mortgages |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 2,545 | 2,655
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,490 | 3,746
Loans Not Past Due | 180,857 | 179,479
Total recorded investment in loans | 184,347 | 183,225
Residential mortgages | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,894 | 2,204
Residential mortgages | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 557 | 516
Residential mortgages | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,039 | 1,026
Consumer Loans |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 250,005 | 265,984
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 | 0 | 9
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 13
Loans Not Past Due | 0 | 1,437
Total recorded investment in loans | 0 | 1,450
Consumer Loans | Credit cards | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 1
Consumer Loans | Credit cards | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 3
Consumer Loans | Credit cards | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 9
Consumer Loans | Home equity lines and loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 722 | 1,183
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,159 | 1,106
Loans Not Past Due | 93,629 | 97,360
Total recorded investment in loans | 94,788 | 98,466
Consumer Loans | Home equity lines and loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 886 | 279
Consumer Loans | Home equity lines and loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 22 | 97
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 | 251 | 730
Consumer Loans | Indirect consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 526 | 693
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,514 | 2,266
Loans Not Past Due | 137,515 | 147,540
Total recorded investment in loans | 139,029 | 149,806
Consumer Loans | Indirect consumer loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,128 | 1,511
Consumer Loans | Indirect consumer loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 185 | 319
Consumer Loans | Indirect consumer loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 201 | 436
Consumer Loans | Direct consumer loans |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 7 | 37
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 143 | 204
Loans Not Past Due | 16,045 | 16,058
Total recorded investment in loans | 16,188 | 16,262
Consumer Loans | Direct consumer loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 89 | 120
Consumer Loans | Direct consumer loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 54 | 53
Consumer Loans | Direct consumer loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 31
Commercial and industrial | Commercial and agricultural |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Non-accrual | 2,042 | 2,048
Loans Past Due 90 Days or More and Still Accruing | 57 | 10
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,436 | 416
Loans Not Past Due | 205,822 | 202,667
Total recorded investment in loans | 207,258 | 203,083
Commercial and industrial | Commercial and agricultural | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,221 | 284
Commercial and industrial | Commercial and agricultural | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 87 | 61
Commercial and industrial | Commercial and agricultural | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 128 | 71
Agricultural | Commercial and agricultural |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 16
Loans Not Past Due | 211 | 313
Total recorded investment in loans | 211 | 329
Agricultural | Commercial and agricultural | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 16
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

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