Fair Value Measurements - Summary of Estimated Fair Values and Related Carrying Amounts of Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Held-to-maturity securities	$ 63,355	$ 67,505
Carrying Amount
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	148,108	157,617
Interest-bearing time deposits	100	100
Held-to-maturity securities	68,081	73,215
Federal Home Loan Bank stock	10,000	10,000
Loans, net	1,177,543	1,136,449
Loans held for sale	83
Accrued interest receivable	4,343	4,015
Bank-owned life insurance	15,061	14,945
Deposits, other than certificates of deposit	399,697	393,018
Certificates of deposit	636,923	605,515
Federal Home Loan Bank advances	234,000	234,000
Accrued interest payable	1,537	2,207
Fair Value
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	148,108	157,617
Interest-bearing time deposits	100	100
Held-to-maturity securities	63,355	67,505
Federal Home Loan Bank stock	10,000	10,000
Loans, net	1,127,467	1,079,916
Loans held for sale	83
Accrued interest receivable	4,343	4,015
Bank-owned life insurance	15,061	14,945
Deposits, other than certificates of deposit	399,697	393,018
Certificates of deposit	637,601	606,387
Federal Home Loan Bank advances	234,213	232,027
Accrued interest payable	1,537	2,207
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	148,108	157,617
Interest-bearing time deposits	0	0
Held-to-maturity securities	0	0
Federal Home Loan Bank stock	0	0
Loans, net	0	0
Loans held for sale	0
Accrued interest receivable	4,343	4,015
Bank-owned life insurance	0	0
Deposits, other than certificates of deposit	0	0
Certificates of deposit	0	0
Federal Home Loan Bank advances	0	0
Accrued interest payable	1,537	2,207
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Interest-bearing time deposits	100	100
Held-to-maturity securities	63,355	67,505
Federal Home Loan Bank stock	10,000	10,000
Loans, net	0	0
Loans held for sale	83
Accrued interest receivable	0	0
Bank-owned life insurance	15,061	14,945
Deposits, other than certificates of deposit	399,697	393,018
Certificates of deposit	637,601	606,387
Federal Home Loan Bank advances	234,213	232,027
Accrued interest payable	0	0
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Interest-bearing time deposits	0	0
Held-to-maturity securities	0	0
Federal Home Loan Bank stock	0	0
Loans, net	1,127,467	1,079,916
Loans held for sale	0
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Deposits, other than certificates of deposit	0	0
Certificates of deposit	0	0
Federal Home Loan Bank advances	0	0
Accrued interest payable	$ 0	$ 0

Accrued interest payable fair value disclosure.

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Accrued Interest Receivable Fair Value Disclosure.

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Certificates Of Deposit Fair Value Disclosure.

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Interest bearing time deposits, fair value disclosure.

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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.

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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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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.

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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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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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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 loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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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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