Loans and ACL - Summary of Amortized Cost of Loans Held for Investment (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 2,457,325	$ 2,412,699
Less: deferred loan fees, net of costs	(345)	(1,640)
Total	2,456,980	2,411,059
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	571,095	590,049
Paycheck Protection Program [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	7,988	11,967
Construction, commercial [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	180,149	183,301
Construction, Residential [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	92,403	76,599
Mortgage, Commercial [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	867,916	864,989
Mortgage, Residential [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	672,473	631,772
Mortgage, Farmland [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	6,394	6,599
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 58,907	$ 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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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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