Disclosures About Fair Value of Assets - Carrying value and estimated fair value of financial instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial assets:
Available-for-sale Debt Securities Fair Value	$ 66,658	$ 63,513
Held-to-maturity debt securities	8,140	8,856
Equity securities	325	115
Recurring
Financial assets:
Available-for-sale Debt Securities Fair Value	66,658	63,513
Recurring \| Carrying Value
Financial assets:
Cash and cash equivalents	16,256	20,202
Available-for-sale Debt Securities Fair Value	66,658	63,513
Held-to-maturity debt securities	8,168	8,947
Equity securities	325	115
Loans	96,274	90,715
Interest receivable	733	689
Federal Home Loan Bank Stock	347	347
Cash surrender value of bank-owned life insurance	3,979	3,877
Financial liabilities:
Deposits	159,587	156,161
Interest payable	7	2
Recurring \| Level 1
Financial assets:
Available-for-sale Debt Securities Fair Value	1,626	1,562
Recurring \| Level 1 \| Carrying Value
Financial assets:
Cash and cash equivalents	16,256	20,202
Available-for-sale Debt Securities Fair Value	1,626	1,562
Equity securities	263	65
Interest receivable	733	689
Financial liabilities:
Interest payable	7	2
Recurring \| Level 2
Financial assets:
Available-for-sale Debt Securities Fair Value	65,032	61,951
Recurring \| Level 2 \| Carrying Value
Financial assets:
Available-for-sale Debt Securities Fair Value	65,032	61,951
Held-to-maturity debt securities	8,140	8,856
Equity securities	62	50
Recurring \| Level 3 \| Carrying Value
Financial assets:
Loans	90,996	83,792
Federal Home Loan Bank Stock	347	347
Cash surrender value of bank-owned life insurance	3,979	3,877
Financial liabilities:
Deposits	$ 143,604	$ 148,263

The fair value portion of interest payable.

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The fair value portion of interest receivable.

+ References

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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