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LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | $ 8,373 | $ 9,952
Loans Past Due 90 Days or More and Still Accruing | 4 | 2
Total ending loans balance | 1,520,929 | 1,541,498
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 11,065 | 10,480
30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 5,284 | 4,598
60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 4,372 | 4,357
90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,409 | 1,525
Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,509,864 | 1,531,018
Commercial and agricultural: |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 271,872 | 370,252
Commercial and agricultural: | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,080 | 2,167
Loans Past Due 90 Days or More and Still Accruing | 4 | 2
Total ending loans balance | 271,451 | 369,968
Commercial and agricultural: | Commercial and industrial | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,530 | 564
Commercial and agricultural: | Commercial and industrial | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,110 | 520
Commercial and agricultural: | Commercial and industrial | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,375 | 14
Commercial and agricultural: | Commercial and industrial | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 45 | 30
Commercial and agricultural: | Commercial and industrial | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 268,921 | 369,404
Commercial and agricultural: | Agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 421 | 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 | 421 | 284
Commercial mortgages: |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 791,476 | 719,145
Commercial mortgages: | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 36 | 55
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 67,644 | 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 | 67,644 | 62,164
Commercial mortgages: | Commercial mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 4,212 | 4,415
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 723,832 | 656,981
Commercial mortgages: | Commercial mortgages | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 4,888 | 5,442
Commercial mortgages: | Commercial mortgages | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,056 | 1,438
Commercial mortgages: | Commercial mortgages | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,615 | 3,696
Commercial mortgages: | Commercial mortgages | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 217 | 308
Commercial mortgages: | Commercial mortgages | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 718,944 | 651,539
Residential mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 845 | 1,632
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 254,641 | 240,013
Residential mortgages | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,793 | 1,684
Residential mortgages | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,226 | 817
Residential mortgages | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 131 | 406
Residential mortgages | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 436 | 461
Residential mortgages | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 252,848 | 238,329
Consumer loans: |  |
Financing Receivable, Past Due [Line Items] |  |
Total ending loans balance | 202,940 | 212,088
Consumer loans: | Home equity lines and loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 819 | 1,159
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 72,653 | 78,761
Consumer loans: | Home equity lines and loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 818 | 1,036
Consumer loans: | Home equity lines and loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 115 | 521
Consumer loans: | Home equity lines and loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 161 | 41
Consumer loans: | Home equity lines and loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 542 | 474
Consumer loans: | Home equity lines and loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 71,835 | 77,725
Consumer loans: | Indirect consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 367 | 519
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Total ending loans balance | 120,045 | 120,853
Consumer loans: | Indirect consumer loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,008 | 1,718
Consumer loans: | Indirect consumer loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 764 | 1,268
Consumer loans: | Indirect consumer loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 83 | 198
Consumer loans: | Indirect consumer loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 161 | 252
Consumer loans: | Indirect consumer loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 119,037 | 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 | 10,242 | 12,474
Consumer loans: | Direct consumer loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 28 | 36
Consumer loans: | Direct consumer loans | 30 - 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 13 | 34
Consumer loans: | Direct consumer loans | 60 - 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 7 | 2
Consumer loans: | Direct consumer loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 8 | 0
Consumer loans: | Direct consumer loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | $ 10,214 | $ 12,438

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