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Loans and ACL - Summary of Accrued Interest Receivable by Loan Type Reversed from Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Accrued interest receivable reversed through income | $ 97 | $ 334 | $ 231 | $ 730
Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Accrued interest receivable reversed through income | 28 | 165 | 86 | 381
Consumer [Member] |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Accrued interest receivable reversed through income | 7 | 5 | 14 | 10
Real Estate [Member] | Construction, Commercial [Member] |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Accrued interest receivable reversed through income | 0 | 35 | 0 | 60
Real Estate [Member] | Commercial [Member] |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Accrued interest receivable reversed through income | 27 | 77 | 29 | 175
Real Estate [Member] | Residential [Member] |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |
Accrued interest receivable reversed through income | $ 35 | $ 52 | $ 102 | $ 104

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