Loans and Allowance for Credit Losses - Summary of Loans Held for Investment (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 2,430,117	$ 2,412,699
Deferred loan fees, net of costs	830	(1,640)
Total	2,430,947	2,411,059
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	506,558	590,049
Paycheck Protection Program [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	2,386	11,967
Construction, Commercial [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	180,052	183,301
Construction, Residential [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	75,832	76,599
Mortgage, Commercial [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	870,540	864,989
Mortgage, Residential [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	730,110	631,772
Mortgage, Farmland [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	5,470	6,599
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 59,169	$ 47,423

Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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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.

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