Loans and ACL - Summary of Amortized Cost of Loans Held for Investment (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 2,258,443	$ 2,430,117
Deferred loan fees, net of costs	836	830
Total	2,259,279	2,430,947
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	401,589	508,944
Construction, commercial [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	135,517	180,052
Construction, Residential [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	55,849	75,832
Commercial [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	879,098	870,540
Residential [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	727,246	730,110
Farmland [Member] \| Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	5,717	5,470
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 53,427	$ 59,169

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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