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Loans and Allowance for Credit Losses - Summary of Amortized Cost of Loans Held for Investment (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 2,110,755	$ 2,430,117
Deferred costs, net of loan fees	1,042	830
Total	2,111,797	2,430,947
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	354,904	508,944
Construction, commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	114,491	180,052
Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	51,807	75,832
Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	847,842	870,540
Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	692,253	730,110
Farmland [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	5,520	5,470
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 43,938	$ 59,169

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