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LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES, Primary Segments Portfolio and Accretable Yield for PCI Loans (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | $ 2,248,836 | $ 1,724,999 |  |
Allowance for Credit Losses | 21,153 | 18,552 | $ 17,304 | $ 15,815
Net loans | 2,227,683 | 1,706,447 |  |
Net unamortized loan fees and costs | 2,843 | 2,573 |  |
Real estate loans serviced for Freddie Mac and Fannie Mae | 203,709 | 187,754 |  |
Real estate loans sold to Freddie Mac and Fannie Mae without recourse | 193,548 | 177,575 |  |
Portfolio balance under MPF | 10,161 | 10,179 |  |
First-loss position for MPF maintained by FHLB | 165 |  |  |
Credit enhancement for MPF by FHLB | $ 229 |  |  |
First Mortgage [Member] | Minimum [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Period of mortgage on real estate | 15 years |  |  |
First Mortgage [Member] | Maximum [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Period of mortgage on real estate | 30 years |  |  |
Second Mortgage [Member] | Maximum [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Period of mortgage on real estate | 15 years |  |  |
Residential [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | $ 310,199 |  |  |
Commercial [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 1,092,887 |  |  |
Construction [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 195,826 |  |  |
Real Estate Loans [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Net loans |  | 296,863 |  |
Real Estate Loans [Member] | Residential [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 359,990 | 210,213 |  |
Allowance for Credit Losses | 2,354 | 1,056 | 1,147 | 1,174
Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 1,092,887 | 876,569 |  |
Allowance for Credit Losses | 9,178 | 10,120 | 8,099 | 6,216
Net loans |  | 876,569 |  |
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 314,802 | 313,614 |  |
Allowance for Credit Losses | 3,264 | 4,589 | 4,729 | 4,953
Real Estate Loans [Member] | Construction [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 195,826 | 80,691 |  |
Allowance for Credit Losses | 1,950 | 801 | 434 | 122
Net loans |  | 80,691 |  |
Consumer [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 61,316 | 86,650 |  |
Allowance for Credit Losses | 1,496 | 135 | 262 | 321
Other Commercial Loans [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 136,168 | 63,222 |  |
Allowance for Credit Losses | 2,229 | 1,040 | 1,023 | 1,226
Net loans |  | 63,222 |  |
Other Agricultural Loans [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 30,673 | 34,832 |  |
Allowance for Credit Losses | 270 | 489 | 558 | 864
Net loans |  | 34,832 |  |
State and Political Subdivision Loans [Member] |  |  |  |
Segments of loan portfolio and allowance for loan losses [Abstract] |  |  |  |
Total loans | 57,174 | 59,208 |  |
Allowance for Credit Losses | $ 45 | 322 | $ 281 | $ 479
Net loans |  | $ 59,208 |  |

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