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LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | $ 8,583 | $ 9,952
Loans Past Due 90 Days or More and Still Accruing | 3 | 2
Total ending loans balance | 1,562,822 | 1,541,498
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 4,136 | 10,480
30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,587 | 4,598
60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 304 | 4,357
90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,245 | 1,525
Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,558,686 | 1,531,018
Commercial and agricultural: |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 341,994 | 370,252
Commercial and agricultural: | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,173 | 2,167
Loans Past Due 90 Days or More and Still Accruing | 3 | 2
Total ending loans balance | 341,572 | 369,968
Commercial and agricultural: | Commercial and industrial | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 854 | 564
Commercial and agricultural: | Commercial and industrial | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 829 | 520
Commercial and agricultural: | Commercial and industrial | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 14
Commercial and agricultural: | Commercial and industrial | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 25 | 30
Commercial and agricultural: | Commercial and industrial | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 340,718 | 369,404
Commercial and agricultural: | Agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 422 | 284
Commercial and agricultural: | Agricultural | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial and agricultural: | Agricultural | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial and agricultural: | Agricultural | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial and agricultural: | Agricultural | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial and agricultural: | Agricultural | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 422 | 284
Commercial mortgages: |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 767,200 | 719,145
Commercial mortgages: | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 44 | 55
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 67,968 | 62,164
Commercial mortgages: | Construction | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial mortgages: | Construction | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial mortgages: | Construction | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial mortgages: | Construction | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 0
Commercial mortgages: | Construction | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 67,968 | 62,164
Commercial mortgages: | Commercial mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 4,348 | 4,415
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 699,232 | 656,981
Commercial mortgages: | Commercial mortgages | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,061 | 5,442
Commercial mortgages: | Commercial mortgages | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 562 | 1,438
Commercial mortgages: | Commercial mortgages | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 174 | 3,696
Commercial mortgages: | Commercial mortgages | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 325 | 308
Commercial mortgages: | Commercial mortgages | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 698,171 | 651,539
Residential mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 916 | 1,632
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 247,309 | 240,013
Residential mortgages | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 751 | 1,684
Residential mortgages | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 326 | 817
Residential mortgages | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 28 | 406
Residential mortgages | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 397 | 461
Residential mortgages | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 246,558 | 238,329
Consumer loans: |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 206,319 | 212,088
Consumer loans: | Home equity lines and loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 770 | 1,159
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 74,309 | 78,761
Consumer loans: | Home equity lines and loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 662 | 1,036
Consumer loans: | Home equity lines and loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 273 | 521
Consumer loans: | Home equity lines and loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 41
Consumer loans: | Home equity lines and loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 389 | 474
Consumer loans: | Home equity lines and loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 73,647 | 77,725
Consumer loans: | Indirect consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 318 | 519
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 120,895 | 120,853
Consumer loans: | Indirect consumer loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 777 | 1,718
Consumer loans: | Indirect consumer loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 569 | 1,268
Consumer loans: | Indirect consumer loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 102 | 198
Consumer loans: | Indirect consumer loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 106 | 252
Consumer loans: | Indirect consumer loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 120,118 | 119,135
Consumer loans: | Direct consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 14 | 5
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 11,115 | 12,474
Consumer loans: | Direct consumer loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 31 | 36
Consumer loans: | Direct consumer loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 28 | 34
Consumer loans: | Direct consumer loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 0 | 2
Consumer loans: | Direct consumer loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 3 | 0
Consumer loans: | Direct consumer loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | $ 11,084 | $ 12,438

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