Fair Values of Assets and Liabilities - Fair Value Measurements, Recurring and Nonrecurring (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial Assets:
Cash and due from banks	$ 8,250	$ 6,638
Interest-bearing time deposits with other banks	747	1,245
Federal Home Loan Bank stock	3,502	1,688
Bank-owned life insurance	4,561	4,461
Loans, net	398,924	373,051
Accrued interest receivable	1,988	1,499
Financial Liabilities:
Deposits	382,363	393,243
Advances from Federal Home Loan Bank	99,397	29,462
Mortgagors’ tax escrow	938	652
Accrued interest payable	95	33
Cash and due from banks [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	8,250	6,638
Interest-bearing time deposits with other banks [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	747	1,245
Federal Home Loan Bank stock [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	3,502	1,688
Bank-owned life insurance [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	4,561	4,461
Loans, net [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	361,402	371,587
Accrued interest receivable [member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	1,988	1,499
Deposits [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	379,714	393,145
Federal Home Loan Bank Borrowings [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	97,675	29,063
Mortgagors' tax escrow [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	938	652
Accrued interest payable [member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	95	33
Fair Value, Inputs, Level 1 [Member] \| Cash and due from banks [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	8,250	6,638
Fair Value, Inputs, Level 1 [Member] \| Accrued interest receivable [member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	1,988	1,499
Fair Value, Inputs, Level 1 [Member] \| Deposits [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	320,624	334,917
Fair Value, Inputs, Level 1 [Member] \| Accrued interest payable [member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	95	33
Fair Value, Inputs, Level 2 [Member] \| Interest-bearing time deposits with other banks [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	747	1,245
Fair Value, Inputs, Level 2 [Member] \| Federal Home Loan Bank stock [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	3,502	1,688
Fair Value, Inputs, Level 2 [Member] \| Bank-owned life insurance [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	4,561	4,461
Fair Value, Inputs, Level 2 [Member] \| Deposits [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	59,090	58,228
Fair Value, Inputs, Level 2 [Member] \| Federal Home Loan Bank Borrowings [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	97,675	29,063
Fair Value, Inputs, Level 2 [Member] \| Mortgagors' tax escrow [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	938	652
Fair Value, Inputs, Level 3 [Member] \| Loans, net [Member]
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure	$ 361,402	$ 371,587

Represents mortgagors tax escrow.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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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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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
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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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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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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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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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