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Loans and ACL - Summary of Amortized Cost of Loans Held for Investment (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 2,059,281	$ 2,110,755
Deferred costs, net of loan fees	429	1,042
Total	2,059,710	2,111,797
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	340,099	354,904
Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	103,006	114,491
Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	53,498	51,807
Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	834,223	847,842
Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	683,946	692,253
Farmland [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	4,748	5,520
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans	$ 39,761	$ 43,938

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