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Loans - Contractual Maturity Schedule by Major Category of Loans Excluding Fair Value Adjustments (Detail) $ in Thousands | Dec. 31, 2022 USD ($)
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Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | $ 2,366,308
Consumer Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 500,407
Agricultural Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 221,938
Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 128,776
Commercial Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 1,152,864
Commercial and Industrial [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 242,996
Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 89,498
Other Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 29,829
Major Category Of Receivables Due Within One Year [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 179,080
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 | 8,890
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 | 525
Major Category Of Receivables Due Within One Year [Member] | Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 59,119
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 | 26,670
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 | 81,552
Major Category Of Receivables Due Within One Year [Member] | Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 2,089
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 | 235
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 | 583,080
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 | 34,961
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 | 7,116
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 | 47,113
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 | 336,890
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 | 108,729
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 | 47,052
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 | 1,219
Major Category Of Receivables Over Five Years [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 1,604,148
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 | 456,556
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 | 214,297
Major Category Of Receivables Over Five Years [Member] | Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 22,544
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 | 789,304
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 | 52,715
Major Category Of Receivables Over Five Years [Member] | Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | 40,357
Major Category Of Receivables Over Five Years [Member] | Other Loan [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Loans excluding fair value adjustments | $ 28,375

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