Loans - Additional Information (Detail) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 1,576,000	$ 827,000
Fair value adjustment of derivative	2,700,000	0
Loans	2,580,674,000	2,357,903,000
Allowance for loan losses	25,024,000	20,313,000
Increase to loan balance	411,000
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	254,935,000	242,360,000
Allowance for loan losses	$ 0
Commercial & Industrial [Member] \| PPP Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		$ 2,900,000

Fair value adjustment of derivative.

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- Definition

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+ References

No definition available.

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- Definition

Amount of increase (decrease) in amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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- Definition

Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

+ References

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