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Loans - Distribution of Fixed Rate Loans and Variable Rate Loans by Major Loan Category (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Consumer Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | $ 350,541 | $ 354,420
Distribution of variable rate loans by major loan category, Variable Rate | 152,433 | 140,003
Agricultural Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | 144,890 | 144,702
Distribution of variable rate loans by major loan category, Variable Rate | 83,007 | 76,117
Agricultural [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | 52,394 | 52,867
Distribution of variable rate loans by major loan category, Variable Rate | 79,073 | 75,866
Commercial Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | 970,161 | 941,927
Distribution of variable rate loans by major loan category, Variable Rate | 255,154 | 210,676
Commercial and Industrial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | 136,702 | 130,513
Distribution of variable rate loans by major loan category, Variable Rate | 104,896 | 111,847
Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | 89,520 | 88,972
Distribution of variable rate loans by major loan category, Variable Rate | 68 | 175
Other Loan [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Distribution of fixed rate loans by major loan category, Fixed Rate | 19,620 | 20,029
Distribution of variable rate loans by major loan category, Variable Rate | $ 9,696 | $ 9,789

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- Definition Amount of loan with fixed rate of interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 + Details
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