Loans and Allowance for Loan Losses - Summary of Financing Receivable, Past Due (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Nonaccrual	$ 5,346	$ 6,548
Total Past Due & Nonaccrual	19,838	11,286
PCI Loans	97,892	1,085
Gross loans	2,316,726	1,025,687
Less: Deferred loan fees, net of costs	(12,184)	(4,271)
Total	2,304,542	1,021,416
30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	12,727	4,147
60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	1,758	545
Greater than 90 Days Past Due & Accruing [Member]
Financing Receivable, Past Due [Line Items]
Days past due	7	46
PCI Loans [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	97,892	1,085
Current Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	2,186,812	1,009,045
Less: Deferred loan fees, net of costs	(12,184)	(4,271)
Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	1,432	1,310
Total Past Due & Nonaccrual	2,726	2,427
PCI Loans	10,213
Gross loans	286,835	123,675
Commercial and Industrial [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	1,166	1,117
Commercial and Industrial [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	128
Commercial and Industrial [Member] \| PCI Loans [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	10,213
Commercial and Industrial [Member] \| Current Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	273,896	121,248
Paycheck Protection Program [Member]
Financing Receivable, Past Due [Line Items]
Gross loans	608,692	292,068
Paycheck Protection Program [Member] \| Current Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	608,692	292,068
Construction, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due & Nonaccrual	310
PCI Loans	31,050	35
Gross loans	155,631	54,702
Construction, Commercial [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	310
Construction, Commercial [Member] \| PCI Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	31,049	35
Construction, Commercial [Member] \| Current Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	124,272	54,667
Construction, Residential [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	262
Total Past Due & Nonaccrual	1,447	262
Gross loans	49,338	18,040
Construction, Residential [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	1,185	262
Construction, Residential [Member] \| Current Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	47,891	17,778
Mortgage, Commercial [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	2,032	3,643
Total Past Due & Nonaccrual	6,004	4,625
PCI Loans	47,519	808
Gross loans	649,474	273,499
Mortgage, Commercial [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	3,287	771
Mortgage, Commercial [Member] \| 60-89 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	685	211
Mortgage, Commercial [Member] \| PCI Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	47,520	808
Mortgage, Commercial [Member] \| Current Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	595,950	268,066
Mortgage, Residential [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	965	881
Total Past Due & Nonaccrual	7,799	1,989
PCI Loans	7,379	242
Gross loans	496,301	213,404
Mortgage, Residential [Member] \| 30-59 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	6,027	1,062
Mortgage, Residential [Member] \| 60-89 Days Past Due [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	800
Mortgage, Residential [Member] \| Greater than 90 Days Past Due & Accruing [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Days past due	7	46
Mortgage, Residential [Member] \| PCI Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	7,379	242
Mortgage, Residential [Member] \| Current Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	481,123	211,173
Mortgage, Farmland [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Gross loans	5,245	3,615
Mortgage, Farmland [Member] \| Current Loans [Member] \| Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	5,245	3,615
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual	655	714
Total Past Due & Nonaccrual	1,552	1,983
PCI Loans	1,731
Gross loans	65,210	46,684
Consumer [Member] \| 30-59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	752	935
Consumer [Member] \| 60-89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Days past due	145	334
Consumer [Member] \| PCI Loans [Member]
Financing Receivable, Past Due [Line Items]
PCI Loans	1,731
Consumer [Member] \| Current Loans [Member]
Financing Receivable, Past Due [Line Items]
Current Loans	$ 61,927	$ 44,701

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