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LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES, Past Due (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Recorded investment of past due [Abstract] |  |  |
Total past due | $ 4,637 | $ 11,046 |
Current | 1,433,094 | 1,389,360 |
PCI | 3,802 | 4,875 |
Total loan receivables | 1,441,533 | 1,405,281 |
90 Days and accruing | 46 | 525 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Total past due and non-accrual | 3,624 | 6,401 |
Current and non-accrual | 3,992 | 4,331 |
PCI Loans considered non accrual | 0 | 0 |
Financing receivable nonaccrual status | 7,616 | 10,732 |
Foregone interest income | 573 | 756 | $ 647
Financing receivables on accrual status [Abstract] |  |  |
Total past due and still accruing | 1,013 | 4,645 |
Current and still accruing | 1,429,102 | 1,385,029 |
PCI Loans still accruing | 3,802 | 4,875 |
Total financing receivables and still accruing | $ 1,433,917 | 1,394,549 |
Minimum [Member] |  |  |
Financing receivables on nonaccrual status [Abstract] |  |  |
Period of past due after which loans considered as non accrual | 90 days |  |
30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | $ 671 | 6,256 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Total past due and non-accrual | 0 | 3,032 |
Financing receivables on accrual status [Abstract] |  |  |
Total past due and still accruing | 671 | 3,224 |
60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 296 | 924 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Total past due and non-accrual | 0 | 28 |
Financing receivables on accrual status [Abstract] |  |  |
Total past due and still accruing | 296 | 896 |
90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 3,670 | 3,866 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Total past due and non-accrual | 3,624 | 3,341 |
Financing receivables on accrual status [Abstract] |  |  |
Total past due and still accruing | 46 | 525 |
Real Estate Loans [Member] | Mortgages [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 599 | 1,796 |
Current | 150,329 | 145,086 |
PCI | 14 | 20 |
Total loan receivables | 150,942 | 146,902 |
90 Days and accruing | 13 | 252 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Financing receivable nonaccrual status | 595 | 787 |
Real Estate Loans [Member] | Mortgages [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 220 | 864 |
Real Estate Loans [Member] | Mortgages [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 170 | 414 |
Real Estate Loans [Member] | Mortgages [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 209 | 518 |
Real Estate Loans [Member] | Home Equity [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 136 | 248 |
Current | 50,019 | 54,761 |
PCI | 0 | 0 |
Total loan receivables | 50,155 | 55,009 |
90 Days and accruing | 33 | 23 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Financing receivable nonaccrual status | 0 | 25 |
Real Estate Loans [Member] | Home Equity [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 103 | 152 |
Real Estate Loans [Member] | Home Equity [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 62 |
Real Estate Loans [Member] | Home Equity [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 33 | 34 |
Real Estate Loans [Member] | Commercial [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 2,211 | 3,097 |
Current | 682,982 | 590,221 |
PCI | 2,145 | 2,937 |
Total loan receivables | 687,338 | 596,255 |
90 Days and accruing | 0 | 70 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Financing receivable nonaccrual status | 2,945 | 4,529 |
Real Estate Loans [Member] | Commercial [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 127 | 836 |
Real Estate Loans [Member] | Commercial [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 115 | 439 |
Real Estate Loans [Member] | Commercial [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 1,969 | 1,822 |
Real Estate Loans [Member] | Agricultural [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 1,398 | 3,612 |
Current | 308,970 | 309,860 |
PCI | 1,643 | 1,686 |
Total loan receivables | 312,011 | 315,158 |
90 Days and accruing | 0 | 150 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Financing receivable nonaccrual status | 3,133 | 3,133 |
Real Estate Loans [Member] | Agricultural [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 31 | 2,283 |
Real Estate Loans [Member] | Agricultural [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Real Estate Loans [Member] | Agricultural [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 1,367 | 1,329 |
Real Estate Loans [Member] | Construction [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Current | 55,036 | 35,404 |
PCI | 0 | 0 |
Total loan receivables | 55,036 | 35,404 |
90 Days and accruing | 0 | 0 |
Real Estate Loans [Member] | Construction [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Real Estate Loans [Member] | Construction [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Real Estate Loans [Member] | Construction [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Consumer [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 164 | 186 |
Current | 25,694 | 30,091 |
PCI | 0 | 0 |
Total loan receivables | 25,858 | 30,277 |
90 Days and accruing | 0 | 30 |
Consumer [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 163 | 147 |
Consumer [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 1 | 9 |
Consumer [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 30 |
Other Commercial Loans [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 119 | 1,063 |
Current | 74,466 | 112,874 |
PCI | 0 | 232 |
Total loan receivables | 74,585 | 114,169 |
90 Days and accruing | 0 | 0 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Financing receivable nonaccrual status | 140 | 1,284 |
Other Commercial Loans [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 17 | 930 |
Other Commercial Loans [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 10 | 0 |
Other Commercial Loans [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 92 | 133 |
Other Agricultural Loans [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 10 | 1,044 |
Current | 39,842 | 47,735 |
PCI | 0 | 0 |
Total loan receivables | 39,852 | 48,779 |
90 Days and accruing | 0 | 0 |
Financing receivables on nonaccrual status [Abstract] |  |  |
Financing receivable nonaccrual status | 803 | 974 |
Other Agricultural Loans [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 10 | 1,044 |
Other Agricultural Loans [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Other Agricultural Loans [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
State and Political Subdivision Loans [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
Current | 45,756 | 63,328 |
PCI | 0 | 0 |
Total loan receivables | 45,756 | 63,328 |
90 Days and accruing | 0 | 0 |
State and Political Subdivision Loans [Member] | 30 to 59 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
State and Political Subdivision Loans [Member] | 60 to 89 Days Past Due [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | 0 | 0 |
State and Political Subdivision Loans [Member] | 90 Days Or Greater [Member] |  |  |
Recorded investment of past due [Abstract] |  |  |
Total past due | $ 0 | $ 0 |

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