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Commitments and Contingencies - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Other Commitments [Line Items] |  |  |  |  |
Outstanding loan commitments | $ 243,600,000 |  | $ 243,600,000 |  | $ 283,200,000
Cancellable amounts | 35,500,000 |  | 35,500,000 |  | 32,900,000
Outstanding stand-by letters of credit | 9,500,000 |  | 9,500,000 |  | 12,500,000
Provision for credit losses for unfunded commitments | 0 |  | 0 |  |
Gain on sale of MSRs | 737,000 | $ (1,011,000) | 1,026,000 | $ (1,011,000) |
Future commitments outstanding related to investments | 5,200,000 |  | 5,200,000 |  | 7,100,000
MSR Assets [Member] |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Reserve | 600,000 |  | 600,000 |  | 1,800,000
Other Liabilities [Member] |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Reserves for unfunded commitments to borrowers | $ 900,000 |  | $ 900,000 |  | $ 900,000

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- Definition Future commitments outstanding related to investments. + References No definition available. + Details
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- Definition Reserves for unfunded commitments to borrowers. + References No definition available. + Details
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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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