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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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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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