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Loans Receivable and Allowance for Loan Losses (Classes of the Loan Portfolio Summarized by the Aggregate Risk Rating) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | $ 934,425 | $ 914,610
Pass [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 925,329 | 900,036
Special Mention [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 4,722 | 5,555
Substandard [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 4,374 | 8,747
Doubtful Or Loss [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount |  | 272
Summarized by Performance of Individual Credits [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 498,442 | 441,430
Summarized by Performance of Individual Credits [Member] | Performing [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 497,836 | 440,906
Summarized by Performance of Individual Credits [Member] | Nonperforming [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 606 | 524
Commercial Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 644,607 | 628,724
Commercial Real Estate Loans [Member] | Pass [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 639,609 | 618,541
Commercial Real Estate Loans [Member] | Special Mention [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 1,284 | 5,146
Commercial Real Estate Loans [Member] | Substandard [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 3,714 | 4,765
Commercial Real Estate Loans [Member] | Doubtful Or Loss [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount |  | 272
Agricultural Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 69,356 | 61,925
Agricultural Real Estate Loans [Member] | Pass [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 66,813 | 60,193
Agricultural Real Estate Loans [Member] | Special Mention [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 2,543 |
Agricultural Real Estate Loans [Member] | Substandard [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount |  | 1,732
Commercial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 184,729 | 186,031
Commercial [Member] | Pass [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 184,474 | 185,729
Commercial [Member] | Special Mention [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 187 | 199
Commercial [Member] | Substandard [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 68 | 103
Other Agricultural Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 35,733 | 37,930
Other Agricultural Loans [Member] | Pass [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 34,433 | 35,573
Other Agricultural Loans [Member] | Special Mention [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 708 | 210
Other Agricultural Loans [Member] | Substandard [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 592 | 2,147
Residential Real Estate Loans [Member] | Summarized by Performance of Individual Credits [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 295,125 | 273,040
Residential Real Estate Loans [Member] | Summarized by Performance of Individual Credits [Member] | Performing [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 294,684 | 272,571
Residential Real Estate Loans [Member] | Summarized by Performance of Individual Credits [Member] | Nonperforming [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 441 | 469
Construction Real Estate Loans [Member] | Summarized by Performance of Individual Credits [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 26,637 | 21,990
Construction Real Estate Loans [Member] | Summarized by Performance of Individual Credits [Member] | Performing [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 26,637 | 21,990
Consumer Loans To Individuals [Member] | Summarized by Performance of Individual Credits [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 176,680 | 146,400
Consumer Loans To Individuals [Member] | Summarized by Performance of Individual Credits [Member] | Performing [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | 176,515 | 146,345
Consumer Loans To Individuals [Member] | Summarized by Performance of Individual Credits [Member] | Nonperforming [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Carrying Amount | $ 165 | $ 55

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