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Business Combination and Asset Purchase - Summary of Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed Recognized (Detail) - USD ($) $ in Thousands | Oct. 01, 2022 | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | --- | ---
Assets |  |  |
Goodwill |  | $ 86,358 | $ 86,358
Peoples Federal Savings And Loan [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Cash | $ 9,800 |  |
Common Shares | 13,400 |  |
Total | 23,200 |  |
Assets |  |  |
Goodwill | $ 5,900 |  |

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