Disclosures About Fair Value of Assets - Carrying value and estimated fair value of financial instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Financial assets:
Available-for-sale Debt Securities Fair Value	$ 68,767	$ 66,658
Held-to-maturity debt securities	7,895	8,140
Equity securities	324	325
Recurring
Financial assets:
Available-for-sale Debt Securities Fair Value	68,767	66,658
Recurring \| Carrying Value
Financial assets:
Cash and cash equivalents	18,795	16,256
Available-for-sale Debt Securities Fair Value	68,767	66,658
Held-to-maturity debt securities	7,922	8,168
Equity securities	324	325
Loans	99,576	96,274
Interest receivable	712	733
Federal Home Loan Bank Stock	347	347
Cash surrender value of bank-owned life insurance	4,005	3,979
Financial liabilities:
Deposits	166,104	159,587
Interest payable	11	7
Recurring \| Level 1
Financial assets:
Available-for-sale Debt Securities Fair Value	1,096	1,626
Recurring \| Level 1 \| Carrying Value
Financial assets:
Cash and cash equivalents	18,795	16,256
Available-for-sale Debt Securities Fair Value	1,096	1,626
Equity securities	262	263
Interest receivable	712	733
Financial liabilities:
Interest payable	11	7
Recurring \| Level 2
Financial assets:
Available-for-sale Debt Securities Fair Value	67,671	65,032
Recurring \| Level 2 \| Carrying Value
Financial assets:
Available-for-sale Debt Securities Fair Value	67,671	65,032
Held-to-maturity debt securities	7,895	8,140
Equity securities	62	62
Recurring \| Level 3 \| Carrying Value
Financial assets:
Loans	94,385	90,996
Federal Home Loan Bank Stock	347	347
Cash surrender value of bank-owned life insurance	4,005	3,979
Financial liabilities:
Deposits	$ 149,967	$ 143,604

The fair value portion of interest payable.

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The fair value portion of interest receivable.

+ References

No definition available.

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- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
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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).

+ References

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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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- Definition

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.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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