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Loans and Allowance for Credit Losses - Schedule of Information Regarding Credit Exposure (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 $ 71,442  
2022 83,396  
2021 37,408  
2020 20,355  
2019 14,764  
Prior 43,723  
Term Loans Total 271,088  
Revolving Loans 63,105  
Grand Total 334,193  
Loans 1,309,800 $ 1,189,782
Total nonaccrual loans 1,670 1,263
Agricultural [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 1,963  
2022 4,129  
2021 3,134  
2020 1,813  
2019 7,360  
Prior 18,379  
Term Loans Total 36,778  
Revolving Loans 6,512  
Grand Total 43,290  
Current year-to-date gross write-offs, 2023 0  
Current year-to-date gross write-offs, 2022 0  
Current year-to-date gross write-offs, 2021 0  
Current year-to-date gross write-offs, 2020 0  
Current year-to-date gross write-offs, 2019 0  
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total 0  
Current year-to-date gross write-offs, Term Loans Total 0  
Current year-to-date gross write-offs, Revolving Loans 0  
Current year-to-date gross write-offs, Grand Total 0  
Loans 43,290 64,159
Agricultural [Member] | Pass [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 1,963  
2022 4,129  
2021 3,134  
2020 1,813  
2019 7,184  
Prior 18,311  
Term Loans Total 36,534  
Revolving Loans 6,512  
Grand Total 43,046  
Loans   63,867
Agricultural [Member] | Special Mention [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 176  
Prior 68  
Term Loans Total 244  
Revolving Loans 0  
Grand Total 244  
Loans   289
Agricultural [Member] | Substandard [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   3
Agricultural [Member] | Doubtful [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Agricultural [Member] | Loss [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Commercial and Industrial [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 17,445  
2022 47,390  
2021 25,139  
2020 11,623  
2019 11,160  
Prior 12,989  
Term Loans Total 125,746  
Revolving Loans 96,611  
Grand Total 222,357  
Current year-to-date gross write-offs, 2023 0  
Current year-to-date gross write-offs, 2022 0  
Current year-to-date gross write-offs, 2021 0  
Current year-to-date gross write-offs, 2020 71  
Current year-to-date gross write-offs, 2019 0  
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total 0  
Current year-to-date gross write-offs, Term Loans Total 71  
Current year-to-date gross write-offs, Revolving Loans 0  
Current year-to-date gross write-offs, Grand Total 71  
Loans 222,357 210,210
Total nonaccrual loans 103  
Commercial and Industrial [Member] | Pass [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 17,445  
2022 47,330  
2021 25,078  
2020 11,584  
2019 11,077  
Prior 12,891  
Term Loans Total 125,405  
Revolving Loans 96,604  
Grand Total 222,009  
Loans   209,700
Commercial and Industrial [Member] | Special Mention [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 31  
2020 39  
2019 83  
Prior 82  
Term Loans Total 235  
Revolving Loans 7  
Grand Total 242  
Loans   400
Commercial and Industrial [Member] | Substandard [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 1,560  
Term Loans Total 1,560  
Revolving Loans 0  
Grand Total 1,560  
Loans   110
Commercial and Industrial [Member] | Doubtful [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Commercial and Industrial [Member] | Loss [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Construction Real Estate [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 777  
2022 1,089  
2021 557  
2020 0  
2019 0  
Prior 0  
Term Loans Total 2,423  
Revolving Loans 14,054  
Grand Total 16,477  
Current year-to-date gross write-offs, 2023 0  
Current year-to-date gross write-offs, 2022 0  
Current year-to-date gross write-offs, 2021 0  
Current year-to-date gross write-offs, 2020 0  
Current year-to-date gross write-offs, 2019 0  
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total 0  
Current year-to-date gross write-offs, Term Loans Total 0  
Current year-to-date gross write-offs, Revolving Loans 0  
Current year-to-date gross write-offs, Grand Total 0  
Loans 16,477 14,736
Total nonaccrual loans   0
Construction Real Estate [Member] | Performing Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 777  
2022 1,089  
2021 557  
2020 0  
2019 0  
Prior 0  
Term Loans Total 2,423  
Revolving Loans 14,054  
Grand Total 16,477  
Loans   14,736
Construction Real Estate [Member] | Nonperforming Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Construction Real Estate [Member] | Nonaccrual Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Consumer Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 8,246  
2022 14,922  
2021 7,421  
2020 3,332  
2019 1,472  
Prior 1,404  
Term Loans Total 36,797  
Revolving Loans 808  
Grand Total 37,605  
Current year-to-date gross write-offs, 2023 1  
Current year-to-date gross write-offs, 2022 13  
Current year-to-date gross write-offs, 2021 11  
Current year-to-date gross write-offs, 2020 28  
Current year-to-date gross write-offs, 2019 0  
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total 1  
Current year-to-date gross write-offs, Term Loans Total 54  
Current year-to-date gross write-offs, Revolving Loans 0  
Current year-to-date gross write-offs, Grand Total 54  
Loans 37,605 39,808
Total nonaccrual loans   0
Consumer Portfolio Segment [Member] | Performing Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 8,246  
2022 14,922  
2021 7,421  
2020 3,332  
2019 1,472  
Prior 1,404  
Term Loans Total 36,797  
Revolving Loans 808  
Grand Total 37,605  
Loans   39,808
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Consumer Portfolio Segment [Member] | Nonaccrual Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Commercial Real Estate Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 72,271  
2022 137,771  
2021 109,265  
2020 73,112  
2019 45,074  
Prior 143,397  
Term Loans Total 580,890  
Revolving Loans 129,070  
Grand Total 709,960  
Loans 709,960 630,953
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 72,271  
2022 137,771  
2021 109,265  
2020 73,112  
2019 45,074  
Prior 141,265  
Term Loans Total 578,758  
Revolving Loans 129,070  
Grand Total 707,828  
Loans   624,555
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 572  
Term Loans Total 572  
Revolving Loans 0  
Grand Total 572  
Loans   2,048
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 60  
2021 30  
2020 0  
2019 0  
Prior 16  
Term Loans Total 106  
Revolving Loans 0  
Grand Total 106  
Loans   4,350
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Commercial Real Estate Portfolio Segment [Member] | Loss [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   0
Residential Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 38,656  
2022 67,385  
2021 29,430  
2020 17,023  
2019 13,292  
Prior 42,319  
Term Loans Total 208,105  
Revolving Loans 48,243  
Grand Total 256,348  
Current year-to-date gross write-offs, 2023 0  
Current year-to-date gross write-offs, 2022 27  
Current year-to-date gross write-offs, 2021 0  
Current year-to-date gross write-offs, 2020 0  
Current year-to-date gross write-offs, 2019 0  
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total 1  
Current year-to-date gross write-offs, Term Loans Total 28  
Current year-to-date gross write-offs, Revolving Loans 0  
Current year-to-date gross write-offs, Grand Total 28  
Loans 256,348 229,916
Total nonaccrual loans 1,567 1,263
Residential Portfolio Segment [Member] | Performing Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 38,656  
2022 66,921  
2021 29,360  
2020 17,023  
2019 13,292  
Prior 41,778  
Term Loans Total 207,030  
Revolving Loans 47,751  
Grand Total 254,781  
Loans   228,653
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans   $ 0
Residential Portfolio Segment [Member] | Nonaccrual Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 464  
2021 70  
2020 0  
2019 0  
Prior 541  
Term Loans Total 1,075  
Revolving Loans 492  
Grand Total 1,567  
Loans to other financial institutions [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 23,763  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 23,763  
Revolving Loans 0  
Grand Total 23,763  
Current year-to-date gross write-offs, 2023 0  
Current year-to-date gross write-offs, 2022 0  
Current year-to-date gross write-offs, 2021 0  
Current year-to-date gross write-offs, 2020 0  
Current year-to-date gross write-offs, 2019 0  
Financing Receivable Originated Writeoffs Five or More Years Before Latest Fiscal Year, Total 0  
Current year-to-date gross write-offs, Term Loans Total 0  
Current year-to-date gross write-offs, Revolving Loans 0  
Current year-to-date gross write-offs, Grand Total 0  
Loans 23,763  
Loans to other financial institutions [Member] | Performing Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 23,763  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 23,763  
Revolving Loans 0  
Grand Total 23,763  
Loans to other financial institutions [Member] | Nonperforming Financial Instruments [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Term Loans Total 0  
Revolving Loans 0  
Grand Total 0  
Loans to other financial institutions [Member] | Nonaccrual Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
2023 0  
2022 0  
2021 0  
2020 0  
2019 0  
Prior 0  
Revolving Loans 0  
Grand Total $ 0