Loans and Allowance for Loan Losses - Summary of Financing Receivable, Past Due (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 12,777	$ 6,548
Total Past Due & Nonaccrual	24,091	11,286
PCI Loans	84,044	1,085
Gross loans	1,800,541	1,025,687
Less: Deferred loan fees, net of costs	(1,440)	(4,271)
Total	1,799,101	1,021,416
30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	6,731	4,147
60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	2,205	545
Greater than 90 Days Past Due & Accruing [Member]
Financing Receivable, Past Due [Line Items]
Days past due	2,378	46
PCI Loans [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	84,044	1,085
Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	1,690,966	1,009,045
Less: Deferred loan fees, net of costs	(1,440)	(4,271)
Financial Asset, Not Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans		17,778
Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	6,270	1,310
Total Past Due & Nonaccrual	6,940	2,427
PCI Loans	8,947
Gross loans	309,058	123,675
Commercial and Industrial [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	338	1,117
Commercial and Industrial [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	332
Commercial and Industrial [Member] \| PCI Loans [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	8,947
Commercial and Industrial [Member] \| Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	293,171	121,248
Paycheck Protection Program [Member]
Financing Receivable, Past Due [Line Items]
Gross loans	47,325	292,068
Paycheck Protection Program [Member] \| Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	47,325	292,068
Construction, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	88
Total Past Due & Nonaccrual	2,870
PCI Loans	14,015	35
Gross loans	139,286	54,702
Construction, Commercial [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	2,696
Construction, Commercial [Member] \| 60-89 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	21
Construction, Commercial [Member] \| Greater than 90 Days Past Due & Accruing [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	65
Construction, Commercial [Member] \| PCI Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	14,015	35
Construction, Commercial [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	122,401	54,667
Construction, Residential [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	254
Total Past Due & Nonaccrual	705	262
Gross loans	51,098	18,040
Construction, Residential [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due		262
Construction, Residential [Member] \| Greater than 90 Days Past Due & Accruing [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	451
Construction, Residential [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	50,393
Mortgage, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	3,191	3,643
Total Past Due & Nonaccrual	5,236	4,625
PCI Loans	52,371	808
Gross loans	680,309	273,499
Mortgage, Commercial [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	2,006	771
Mortgage, Commercial [Member] \| 60-89 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	15	211
Mortgage, Commercial [Member] \| Greater than 90 Days Past Due & Accruing [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	24
Mortgage, Commercial [Member] \| PCI Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	52,371	808
Mortgage, Commercial [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	622,702	268,066
Mortgage, Residential [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	2,605	881
Total Past Due & Nonaccrual	6,921	1,989
PCI Loans	7,671	242
Gross loans	499,361	213,404
Mortgage, Residential [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	989	1,062
Mortgage, Residential [Member] \| 60-89 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	1,601
Mortgage, Residential [Member] \| Greater than 90 Days Past Due & Accruing [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	1,726	46
Mortgage, Residential [Member] \| PCI Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	7,671	242
Mortgage, Residential [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	484,769	211,173
Mortgage, Farmland [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Gross loans	6,317	3,615
Mortgage, Farmland [Member] \| Financial Asset, Not Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	6,317	3,615
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	369	714
Total Past Due & Nonaccrual	1,419	1,983
PCI Loans	1,040
Gross loans	67,787	46,684
Consumer [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	702	935
Consumer [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	236	334
Consumer [Member] \| Greater than 90 Days Past Due & Accruing [Member]
Financing Receivable, Past Due [Line Items]
Days past due	112
Consumer [Member] \| PCI Loans [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	1,040
Consumer [Member] \| Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	$ 65,328	$ 44,701

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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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