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Fair Values of Financial Instruments - Additional Information (Detail) - USD ($) | Dec. 31, 2025 | Dec. 31, 2024
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Transfers from Level 1 to Level 3 for financial assets | $ 0 | $ 0
Transfers from Level 3 to Level 1 for financial assets | 0 | 0
Transfers from Level 2 to Level 3 for financial assets | 0 | 0
Transfers from Level 3 to Level 2 for financial assets | 0 | 0
Transfers from Level 1 to Level 3 for financial liabilities | 0 | 0
Transfers from Level 3 to Level 1 for financial liabilities | 0 | 0
Transfers from Level 2 to Level 3 for financial liabilities | 0 | 0
Transfers from Level 3 to Level 2 for financial liabilities | 0 | 0
Fair value measurement of intangible assets | 0 | 0
Loans held for sale | 31,277,000 | 44,360,000
Loans Held For Sale [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Loans held for sale | $ 0 | $ 0
Loans Held For Sale [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Sales price of loans held for sale increase percentage | 0.11% |
Loans Held For Sale [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Sales price of loans held for sale increase percentage | 0.45% |
Loans Held For Sale [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Sales price of loans held for sale increase percentage | 0.10% |
Derivatives [Member] | Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Sales price of loans held for sale increase percentage | 0.11% |
Derivatives [Member] | Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Sales price of loans held for sale increase percentage | 0.45% |
Derivatives [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Sales price of loans held for sale increase percentage | 0.10% |

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