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v3.25.3

Fair Value Disclosures - Additional Information (Detail) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) Loans | Sep. 30, 2024 USD ($) Loans | Dec. 31, 2024 USD ($) Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets transfer between Level 2 and Level 3 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0
Other real estate owned, total | 1,870,000 | 501,000 | 1,870,000 | 501,000 | $ 811,000
Real state owned |  |  | 2,215,000 | 1,156,000 |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Real state owned | 0 | 0 | $ 0 | $ 0 |
Residential Mortgage [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Number of loans held-for-sale | Loans |  |  | 0 | 0 | 0
Recognized credit losses | $ 0 | $ 0 | $ 0 | $ 0 |
Minimum [Member] | Measurement Input, Discount Rate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt discounts, percentage | 5 |  | 5 |  |
Maximum [Member] | Measurement Input, Discount Rate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt discounts, percentage | 25 |  | 25 |  |

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