Fair Values of Assets and Liabilities - Fair Value Measurements, Recurring and Nonrecurring (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financial Assets:
Cash and due from banks	$ 6,712	$ 7,100
Federal Home Loan Bank stock	2,677	2,498
Bank-owned life insurance	4,811	4,768
Loans, net	435,980	435,481
Accrued interest receivable	2,154	2,103
Financial Liabilities:
Deposits	472,264	454,208
Advances from Federal Home Loan Bank	58,953	52,268
Mortgagors’ tax escrow	634	654
Accrued interest payable	494	475
Cash and due from banks [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	6,712	7,100
Federal Home Loan Bank stock [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	2,677	2,498
Bank-owned life insurance [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	4,811	4,768
Loans, net [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	401,412	397,154
Accrued interest receivable [member]
Financial Assets:
Financial Assets, Fair Value Disclosure	2,154	2,103
Deposits [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	472,225	453,890
Federal Home Loan Bank Borrowings [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	58,947	52,208
Mortgagors' tax escrow [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	634	654
Accrued interest payable [member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	494	475
Fair Value, Inputs, Level 1 [Member] \| Cash and due from banks [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	6,712	7,100
Fair Value, Inputs, Level 1 [Member] \| Accrued interest receivable [member]
Financial Assets:
Financial Assets, Fair Value Disclosure	2,154	2,103
Fair Value, Inputs, Level 1 [Member] \| Deposits [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	309,974	318,520
Fair Value, Inputs, Level 1 [Member] \| Accrued interest payable [member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	494	475
Fair Value, Inputs, Level 2 [Member] \| Federal Home Loan Bank stock [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	2,677	2,498
Fair Value, Inputs, Level 2 [Member] \| Bank-owned life insurance [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	4,811	4,768
Fair Value, Inputs, Level 2 [Member] \| Deposits [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	162,251	135,370
Fair Value, Inputs, Level 2 [Member] \| Federal Home Loan Bank Borrowings [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	58,947	52,208
Fair Value, Inputs, Level 2 [Member] \| Mortgagors' tax escrow [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	634	654
Fair Value, Inputs, Level 3 [Member] \| Loans, net [Member]
Financial Assets:
Financial Assets, Fair Value Disclosure	$ 401,412	$ 397,154

Represents mortgagors tax escrow.

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Fair value portion of asset recognized for present right to economic benefit.

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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