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Loans and Allowance for Loan Losses - Summary of Loan Portfolio Individually and Collectively Evaluated for Impairment (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | $ 1,777,742 | $ 728,897 |
Less: Deferred loan fees, net of costs, excluding PPP loans | (570) | 736 |
Total, excluding PPP loans | 1,777,172 | 728,161 |
Allowance for loan losses | 12,121 | 13,827 | $ 4,572
PCI Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 84,029 | 1,085 |
PCI Loans [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 8,903 |  |
PCI Loans [Member] | Construction, Commercial [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 14,754 | 35 |
PCI Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 51,872 | 808 |
PCI Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 7,621 | 242 |
PCI Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 879 |  |
Originated and Purchased Performing Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 1,693,713 | 727,812 |
Originated and Purchased Performing Loans [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 311,924 | 123,675 |
Originated and Purchased Performing Loans [Member] | Construction, Commercial [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 131,769 | 54,667 |
Originated and Purchased Performing Loans [Member] | Construction, Residential [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 58,857 | 18,040 |
Originated and Purchased Performing Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 649,631 | 272,691 |
Originated and Purchased Performing Loans [Member] | Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 486,361 | 213,162 |
Originated and Purchased Performing Loans [Member] | Mortgage, Farmland [Member] | Real Estate [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 6,173 | 3,615 |
Originated and Purchased Performing Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 48,998 | 41,962 |
Individually Evaluated for Impairment [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 9,733 | 2,331 |
Less: Deferred loan fees, net of costs, excluding PPP loans |  |  |
Total, excluding PPP loans | 9,733 | 2,331 |
Individually Evaluated for Impairment [Member] | PCI Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans |  |  |
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans |  |  |
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 |  |  |
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 |  |  |
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 |  |  |
Individually Evaluated for Impairment [Member] | PCI Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans |  |  |
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 9,733 | 2,331 |
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 | 4,612 | 234 |
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 | 527 |  |
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 |  |  |
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 | 3,194 | 1,645 |
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 | 1,400 | 452 |
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 |  |  |
Individually Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans |  |  |
Collectively Evaluated for Impairment [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 1,768,009 | 726,566 |
Less: Deferred loan fees, net of costs, excluding PPP loans | (570) | 736 |
Total, excluding PPP loans | 1,767,439 | 725,830 |
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 84,029 | 1,085 |
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 8,903 |  |
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 | 14,754 | 35 |
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 | 51,872 | 808 |
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 | 7,621 | 242 |
Collectively Evaluated for Impairment [Member] | PCI Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 879 |  |
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 1,683,980 | 725,481 |
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 | 307,312 | 123,441 |
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 | 131,242 | 54,667 |
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 | 58,857 | 18,040 |
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 | 646,437 | 271,046 |
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 | 484,961 | 212,710 |
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 | 6,173 | 3,615 |
Collectively Evaluated for Impairment [Member] | Originated and Purchased Performing Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 48,998 | 41,962 |
Related allowance for loan losses [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 12,121 | 13,827 |
Total, excluding PPP loans | 12,121 | 13,827 |
Related allowance for loan losses [Member] | PCI Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 117 |  |
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 | 117 |  |
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | 12,004 | 13,827 |
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 | 2,859 | 3,762 |
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 | 895 | 960 |
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 | 21 | 150 |
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 | 4,294 | 4,215 |
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 | 1,376 | 1,481 |
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 | 18 | 18 |
Related allowance for loan losses [Member] | Originated and Purchased Performing Loans [Member] | Consumer Loans [Member] |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Gross loans, excluding PPP loans | $ 2,541 | $ 3,241 |

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