Related Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Loans outstanding to related parties	$ 11,696,000	$ 8,331,000
Deposits from related parties	11,652,000	10,157,000
Related Parties [Member]
Related Party Transaction [Line Items]
Loans outstanding to related parties	11,696,000	8,331,000
Design and Construction Firm [Member]
Related Party Transaction [Line Items]
Related party transaction, payment	2,180,000	5,768,000	$ 287,000
Accrued payables outstanding	$ 0	$ 0

Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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Amount of deposits held by the entity for a related party (entity, shareholder, employee).

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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.

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