Loans and Allowance for Credit Losses - Summary of Loan Portfolio Individually and Collectively Evaluated for Impairment (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		$ 2,400,732
Less: Deferred loan fees, net of costs, excluding PPP loans		(1,640)
Total, excluding PPP loans		2,399,092
Attributable to specific reserve	$ 35,893	30,740	$ 12,121	$ 13,827
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Attributable to specific reserve	27,754	27,070
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Attributable to specific reserve	$ 8,139	3,670
PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		58,748
PCI Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		1,481
PCI Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		7
PCI Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		51,223
PCI Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		5,678
PCI Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		359
Originated and Purchased Performing Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		2,341,984
Originated and Purchased Performing Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		588,568
Originated and Purchased Performing Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		183,294
Originated and Purchased Performing Loans [Member] | Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		76,599
Originated and Purchased Performing Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		813,766
Originated and Purchased Performing Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		626,094
Originated and Purchased Performing Loans [Member] | Mortgage, Farmland [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		6,599
Originated and Purchased Performing Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		47,064
Individually Evaluated for Impairment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		73,643
Less: Deferred loan fees, net of costs, excluding PPP loans		0
Total, excluding PPP loans		73,643
Individually Evaluated for Impairment [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		73,643
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		67,654
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		521
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		4,634
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		834
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Farmland [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Collectively Evaluated for Impairment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		2,327,089
Less: Deferred loan fees, net of costs, excluding PPP loans		(1,640)
Total, excluding PPP loans		2,325,449
Collectively Evaluated for Impairment [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		58,748
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		1,481
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		7
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		51,223
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		5,678
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		359
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		2,268,341
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		520,914
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		182,773
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		76,599
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		809,132
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		625,260
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Farmland [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		6,599
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		47,064
Related allowance for loan losses [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		30,740
Less: Deferred loan fees, net of costs, excluding PPP loans		0
Total, excluding PPP loans		30,740
Related allowance for loan losses [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		3
Related allowance for loan losses [Member] | PCI Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Related allowance for loan losses [Member] | PCI Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Related allowance for loan losses [Member] | PCI Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		3
Related allowance for loan losses [Member] | PCI Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Related allowance for loan losses [Member] | PCI Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		0
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		30,737
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		23,073
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Construction, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		1,637
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Construction, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		628
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		2,353
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		1,760
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Mortgage, Farmland [Member] | Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		4
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Gross loans, excluding PPP loans		$ 1,282