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Loans - Contractual Maturity Schedule by Major Category of Loans Excluding Fair Value Adjustments (Detail) $ in Thousands | Dec. 31, 2021 USD ($)
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Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | $ 1,865,223
Consumer Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 400,430
Agricultural Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 198,785
Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 118,397
Commercial Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 848,681
Commercial and Industrial [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 209,040
Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 57,788
Other Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 32,102
Major Category Of Receivables Due Within One Year [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 194,950
Major Category Of Receivables Due Within One Year [Member] | Consumer Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 8,878
Major Category Of Receivables Due Within One Year [Member] | Agricultural Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 5,279
Major Category Of Receivables Due Within One Year [Member] | Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 66,872
Major Category Of Receivables Due Within One Year [Member] | Commercial Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 39,430
Major Category Of Receivables Due Within One Year [Member] | Commercial and Industrial [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 71,042
Major Category Of Receivables Due Within One Year [Member] | Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 3,202
Major Category Of Receivables Due Within One Year [Member] | Other Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 247
Major Category Of Receivables Due Within One Year to Five Years [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 512,656
Major Category Of Receivables Due Within One Year to Five Years [Member] | Consumer Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 35,921
Major Category Of Receivables Due Within One Year to Five Years [Member] | Agricultural Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 5,020
Major Category Of Receivables Due Within One Year to Five Years [Member] | Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 35,126
Major Category Of Receivables Due Within One Year to Five Years [Member] | Commercial Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 308,165
Major Category Of Receivables Due Within One Year to Five Years [Member] | Commercial and Industrial [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 87,047
Major Category Of Receivables Due Within One Year to Five Years [Member] | Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 39,746
Major Category Of Receivables Due Within One Year to Five Years [Member] | Other Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 1,631
Major Category Of Receivables Over Five Years [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 1,157,617
Major Category Of Receivables Over Five Years [Member] | Consumer Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 355,631
Major Category Of Receivables Over Five Years [Member] | Agricultural Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 188,486
Major Category Of Receivables Over Five Years [Member] | Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 16,399
Major Category Of Receivables Over Five Years [Member] | Commercial Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 501,086
Major Category Of Receivables Over Five Years [Member] | Commercial and Industrial [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 50,951
Major Category Of Receivables Over Five Years [Member] | Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 14,840
Major Category Of Receivables Over Five Years [Member] | Other Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | $ 30,224

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