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Financial Instruments - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Carrying value of foreclosed assets held for sale | $ 0 |  | $ 0 |  |
Fair Value, Inputs, Level 3 |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Fair value of loans with specific allocated losses | 74,300,000 |  | 74,300,000 |  | $ 10,500,000
Accrued interest receivable reversed | 470,000 | $ 1,300,000 | 956,000 | $ 1,900,000 |
Fair value of foreclosed assets held for sale | $ 43,000,000.0 |  | $ 43,000,000.0 |  | $ 30,500,000

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