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Allowance for Credit Losses - Schedule of Accrued Interest Receivables Written off by Reversing Interest (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | $ 2,738 | $ 2,375
Construction [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | 267 | 23
Commercial Real Estate [Member] | Owner-occupied [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | 90 | 186
Commercial Real Estate [Member] | Nonowner-occupied [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | 1,481 | 853
Other Commercial [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | 82 | 736
Residential Real Estate [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | 577 | 232
Consumer [Member] | Bankcard [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | 0 | 0
Consumer [Member] | Other consumer [Member] |  |
Accrued Interest Receivables And Written Off Status [Line Items] |  |
Accrued Interest Receivables Written Off by Reversing Interest Income | $ 241 | $ 345

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