Fair Value of Financial Instruments - Estimated Fair Values and Related Carrying or Notional Amounts (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial Liabilities:
Subordinated notes, net of unamortized issuance costs	$ 34,818	$ 34,702
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	176,351	142,201
Interest-bearing time deposits	2,482	2,740
Other securities	14,400	17,138
Loans held for sale	2,996	1,576
Loans, net	2,536,043	2,556,167
Interest receivable	12,657	11,774
Financial Liabilities:
Total Deposits	2,686,765	2,607,463
Fed funds purchased and securities sold under agreement to repurchase	27,218	28,218
Federal Home Loan Bank advances	246,056	265,750
Subordinated notes, net of unamortized issuance costs	34,818	34,702
Interest payable	6,618	5,441
Fair Value [Member]
Financial Assets:
Cash and cash equivalents	176,351	142,201
Interest-bearing time deposits	2,472	2,725
Other securities	14,400	17,138
Loans held for sale	2,996	1,552
Loans, net	2,485,297	2,396,540
Interest receivable	12,657	11,774
Financial Liabilities:
Total Deposits	2,682,850	2,600,613
Fed funds purchased and securities sold under agreement to repurchase	27,218	28,218
Federal Home Loan Bank advances	245,373	260,400
Subordinated notes, net of unamortized issuance costs	31,983	30,676
Interest payable	6,618	5,441
Level 1 [Member]
Financial Assets:
Cash and cash equivalents	176,351	142,201
Financial Liabilities:
Total Deposits	516,904	528,465
Level 2 [Member]
Financial Assets:
Interest-bearing time deposits	2,472	2,725
Financial Liabilities:
Subordinated notes, net of unamortized issuance costs	31,983	30,676
Level 3 [Member]
Financial Assets:
Other securities	14,400	17,138
Loans held for sale	2,996	1,552
Loans, net	2,485,297	2,396,540
Interest receivable	12,657	11,774
Financial Liabilities:
Total Deposits	2,165,946	2,072,148
Fed funds purchased and securities sold under agreement to repurchase	27,218	28,218
Federal Home Loan Bank advances	245,373	260,400
Interest payable	6,618	5,441
Interest Bearing Deposits [Member] \| Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	1,522,280	1,415,981
Interest Bearing Deposits [Member] \| Fair Value [Member]
Financial Liabilities:
Total Deposits	1,521,097	1,416,007
Interest Bearing Deposits [Member] \| Level 3 [Member]
Financial Liabilities:
Total Deposits	1,521,097	1,416,007
Non Interest Bearing Deposits [Member] \| Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	516,904	528,465
Non Interest Bearing Deposits [Member] \| Fair Value [Member]
Financial Liabilities:
Total Deposits	516,904	528,465
Non Interest Bearing Deposits [Member] \| Level 1 [Member]
Financial Liabilities:
Total Deposits	516,904	528,465
Time Deposits [Member] \| Reported Value Measurement [Member]
Financial Liabilities:
Total Deposits	647,581	663,017
Time Deposits [Member] \| Fair Value [Member]
Financial Liabilities:
Total Deposits	644,849	656,141
Time Deposits [Member] \| Level 3 [Member]
Financial Liabilities:
Total Deposits	$ 644,849	$ 656,141

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Interest bearing time deposits fair value disclosure.

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Interest payable fair value disclosure.

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Interest receivable fair value disclosure.

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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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Fair value portion of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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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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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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