Allowance for Credit Losses - Schedule of Loans Modified to Borrowers Experiencing Financial Difficulty (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2024 USD ($)
Term Extension
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 13,664
Payment Deferral
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 2,949
Commercial and Agriculture [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Term Extension	6 month, 12 month and 62 month term extensions
Payment Deferral	5 month payment deferral
Commercial and Agriculture [Member] \| Term Extension
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 4,549
Percent of total loans	1.38%
Commercial and Agriculture [Member] \| Payment Deferral
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 435
Percent of total loans	0.13%
Commercial Real Estate Non Owner Occupied [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Term Extension	6 month term extension
Payment Deferral	5 month and 7.5 month payment deferral
Commercial Real Estate Non Owner Occupied [Member] \| Term Extension
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 8,000
Percent of total loans	0.65%
Commercial Real Estate Non Owner Occupied [Member] \| Payment Deferral
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 2,514
Percent of total loans	0.21%
Residential Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Term Extension	35 month term extension
Residential Real Estate [Member] \| Term Extension
Financing Receivable Recorded Investment Past Due [Line Items]
Amortized Cost Basis	$ 1,115
Percent of total loans	0.15%

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+ References

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- Definition

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+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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