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v3.23.2

Allowance for Credit Losses - Summary of Classes of the Loan Portfolio Summarized by the Internal Risk Rating System (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross | $ 969,170 | $ 927,615
Agriculture Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 15,591
Commercial and PPP Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 104,755
Commercial Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 540,914
Residential Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 250,832
Consumer Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross | 3,929 | 10,057
Municipal Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross | $ 11,308 | 5,466
Pass [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 912,686
Pass [Member] | Agriculture Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 15,291
Pass [Member] | Commercial and PPP Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 101,980
Pass [Member] | Commercial Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 533,864
Pass [Member] | Residential Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 246,028
Pass [Member] | Consumer Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 10,057
Pass [Member] | Municipal Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 5,466
Special Mention [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 5,444
Special Mention [Member] | Agriculture Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Special Mention [Member] | Commercial and PPP Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 2,721
Special Mention [Member] | Commercial Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 2,516
Special Mention [Member] | Residential Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 207
Special Mention [Member] | Consumer Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Special Mention [Member] | Municipal Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Substandard [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 9,485
Substandard [Member] | Agriculture Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 300
Substandard [Member] | Commercial and PPP Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 54
Substandard [Member] | Commercial Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 4,534
Substandard [Member] | Residential Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 4,597
Substandard [Member] | Consumer Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Substandard [Member] | Municipal Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] | Agriculture Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] | Commercial and PPP Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] | Commercial Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] | Residential Real Estate Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] | Consumer Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | 0
Doubtful [Member] | Municipal Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans and Leases Receivable, Gross |  | $ 0

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