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Loans and Allowance for Loan Losses - Summary of Loan Portfolio Individually and Collectively Evaluated for Impairment (Detail) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | $ 1,730,389 | $ 733,619
Less: Deferred loan fees, net of costs, excluding PPP loans | (722) | (736)
Total, excluding PPP loans | 1,729,667 | 732,883
Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 1,636,226 | 732,534
PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 94,163 | 1,085
Individually Evaluated for Impairment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 7,700 | 2,331
Total, excluding PPP loans | 7,700 | 2,331
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 7,700 | 2,331
Collectively Evaluated for Impairment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 1,722,689 | 731,288
Less: Deferred loan fees, net of costs, excluding PPP loans | (722) | (736)
Total, excluding PPP loans | 1,721,967 | 730,552
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 1,628,526 | 730,203
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 94,163 | 1,085
Commercial and Industrial [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 294,943 | 123,675
Commercial and Industrial [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 9,235 |
Commercial and Industrial [Member] | Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 4,810 | 234
Commercial and Industrial [Member] | Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 290,133 | 123,441
Commercial and Industrial [Member] | Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 9,235 |
Construction, Commercial [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans |  | 35
Construction, Commercial [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 120,494 | 54,667
Construction, Commercial [Member] | Real Estate [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 22,721 |
Construction, Commercial [Member] | Individually Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 536 |
Construction, Commercial [Member] | Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans |  | 35
Construction, Commercial [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 119,958 | 54,667
Construction, Commercial [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 22,721 |
Construction, Residential [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 47,894 | 18,040
Construction, Residential [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 47,894 | 18,040
Mortgage, Commercial [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans |  | 808
Mortgage, Commercial [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 619,647 | 272,691
Mortgage, Commercial [Member] | Real Estate [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 52,945 |
Mortgage, Commercial [Member] | Individually Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 1,378 | 1,645
Mortgage, Commercial [Member] | Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans |  | 808
Mortgage, Commercial [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 618,269 | 271,046
Mortgage, Commercial [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 52,945 |
Mortgage, Residential [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans |  | 242
Mortgage, Residential [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 482,847 | 213,162
Mortgage, Residential [Member] | Real Estate [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 7,906 |
Mortgage, Residential [Member] | Individually Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 976 | 452
Mortgage, Residential [Member] | Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans |  | 242
Mortgage, Residential [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 481,871 | 212,710
Mortgage, Residential [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 7,906 |
Mortgage, Farmland [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 6,537 | 3,615
Mortgage, Farmland [Member] | Collectively Evaluated for Impairment [Member] | Real Estate [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 6,537 | 3,615
Consumer [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 63,864 | 46,684
Consumer [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 1,356 |
Consumer [Member] | Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | 63,864 | $ 46,684
Consumer [Member] | Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans, excluding PPP loans | $ 1,356 |

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