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Loans and ACL - Summary of Amortized Cost of Loans Held for Investment by Internal Loan Grade by Year of Orgination (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | $ 153,430 |
2022 | 809,270 |
2021 | 392,148 |
2020 | 317,771 |
2019 | 116,695 |
Prior | 394,254 |
Revolving Loans | 269,560 |
Total | 2,453,128 |
Current period gross charge-offs | 1,309 | $ 2,819
Current period gross charge-offs 2023 | 38 |
Current period gross charge-offs 2022 | 97 |
Current period gross charge-offs 2021 | 703 |
Current period gross charge-offs 2020 | 12 |
Current period gross charge-offs 2019 | 36 |
Current period gross charge-offs prior | 28 |
Current period gross charge-offs revolving | 395 |
Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 46,953 |
2022 | 216,016 |
2021 | 63,738 |
2020 | 45,098 |
2019 | 17,351 |
Prior | 22,125 |
Revolving Loans | 155,617 |
Total | 566,898 |
Current period gross charge-offs | 799 | 2,401
Current period gross charge-offs 2021 | 664 |
Current period gross charge-offs prior | 9 |
Current period gross charge-offs revolving | 126 |
Paycheck Protection Program [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 7,988 |
Total | 7,988 |
Construction, commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 8,488 |
2022 | 57,929 |
2021 | 62,022 |
2020 | 17,298 |
2019 | 2,118 |
Prior | 9,803 |
Revolving Loans | 22,491 |
Total | 180,149 |
Construction, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 20,105 |
2022 | 51,254 |
2021 | 16,477 |
2020 | 1,113 |
2019 | 998 |
Revolving Loans | 2,456 |
Total | 92,403 |
Mortgage, Commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 28,993 |
2022 | 265,470 |
2021 | 128,206 |
2020 | 172,618 |
2019 | 59,121 |
Prior | 192,737 |
Revolving Loans | 20,771 |
Total | 867,916 |
Mortgage, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 30,765 |
2022 | 199,078 |
2021 | 106,718 |
2020 | 76,933 |
2019 | 33,049 |
Prior | 165,249 |
Revolving Loans | 60,681 |
Total | 672,473 |
Current period gross charge-offs | 13 |
Current period gross charge-offs prior | 13 |
Mortgage, Farmland [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 729 |
2021 | 1,328 |
2019 | 1,657 |
Prior | 2,450 |
Revolving Loans | 230 |
Total | 6,394 |
Consumer [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 18,126 |
2022 | 18,794 |
2021 | 5,671 |
2020 | 4,711 |
2019 | 2,401 |
Prior | 1,890 |
Revolving Loans | 7,314 |
Total | 58,907 |
Current period gross charge-offs | 497 | $ 279
Current period gross charge-offs 2023 | 38 |
Current period gross charge-offs 2022 | 97 |
Current period gross charge-offs 2021 | 39 |
Current period gross charge-offs 2020 | 12 |
Current period gross charge-offs 2019 | 36 |
Current period gross charge-offs prior | 6 |
Current period gross charge-offs revolving | 269 |
Risk Grades 1 - 4 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 153,257 |
2022 | 714,210 |
2021 | 363,931 |
2020 | 285,509 |
2019 | 97,783 |
Prior | 336,360 |
Revolving Loans | 222,412 |
Total | 2,173,462 |
Risk Grades 1 - 4 | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 46,836 |
2022 | 144,560 |
2021 | 54,533 |
2020 | 36,707 |
2019 | 15,681 |
Prior | 20,557 |
Revolving Loans | 120,901 |
Total | 439,775 |
Risk Grades 1 - 4 | Paycheck Protection Program [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 7,988 |
Total | 7,988 |
Risk Grades 1 - 4 | Construction, commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 8,488 |
2022 | 52,358 |
2021 | 55,721 |
2020 | 16,576 |
2019 | 2,118 |
Prior | 8,803 |
Revolving Loans | 12,209 |
Total | 156,273 |
Risk Grades 1 - 4 | Construction, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 20,084 |
2022 | 50,390 |
2021 | 15,528 |
2020 | 1,113 |
2019 | 998 |
Revolving Loans | 2,456 |
Total | 90,569 |
Risk Grades 1 - 4 | Mortgage, Commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 28,993 |
2022 | 250,028 |
2021 | 117,823 |
2020 | 153,436 |
2019 | 44,957 |
Prior | 151,324 |
Revolving Loans | 20,171 |
Total | 766,732 |
Risk Grades 1 - 4 | Mortgage, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 30,743 |
2022 | 197,427 |
2021 | 105,466 |
2020 | 73,162 |
2019 | 30,080 |
Prior | 151,984 |
Revolving Loans | 59,207 |
Total | 648,069 |
Risk Grades 1 - 4 | Mortgage, Farmland [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 729 |
2021 | 1,328 |
2019 | 1,657 |
Prior | 2,372 |
Revolving Loans | 184 |
Total | 6,270 |
Risk Grades 1 - 4 | Consumer [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 18,113 |
2022 | 18,718 |
2021 | 5,544 |
2020 | 4,515 |
2019 | 2,292 |
Prior | 1,320 |
Revolving Loans | 7,284 |
Total | 57,786 |
Risk Grades 5 - 6 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 152 |
2022 | 34,873 |
2021 | 20,536 |
2020 | 30,488 |
2019 | 16,370 |
Prior | 41,756 |
Revolving Loans | 37,678 |
Total | 181,853 |
Risk Grades 5 - 6 | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 117 |
2022 | 12,552 |
2021 | 9,205 |
2020 | 8,391 |
2019 | 467 |
Prior | 1,450 |
Revolving Loans | 25,942 |
Total | 58,124 |
Risk Grades 5 - 6 | Construction, commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 5,571 |
2021 | 6,301 |
2020 | 722 |
Prior | 710 |
Revolving Loans | 10,282 |
Total | 23,586 |
Risk Grades 5 - 6 | Construction, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 949 |
Total | 949 |
Risk Grades 5 - 6 | Mortgage, Commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 15,442 |
2021 | 4,039 |
2020 | 19,182 |
2019 | 13,390 |
Prior | 32,237 |
Revolving Loans | 500 |
Total | 84,790 |
Risk Grades 5 - 6 | Mortgage, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 22 |
2022 | 1,282 |
2021 | 24 |
2020 | 2,112 |
2019 | 2,508 |
Prior | 6,852 |
Revolving Loans | 878 |
Total | 13,678 |
Risk Grades 5 - 6 | Mortgage, Farmland [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Prior | 78 |
Revolving Loans | 46 |
Total | 124 |
Risk Grades 5 - 6 | Consumer [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 13 |
2022 | 26 |
2021 | 18 |
2020 | 81 |
2019 | 5 |
Prior | 429 |
Revolving Loans | 30 |
Total | 602 |
Risk Grade 7 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 21 |
2022 | 60,187 |
2021 | 7,681 |
2020 | 1,774 |
2019 | 2,542 |
Prior | 16,138 |
Revolving Loans | 9,470 |
Total | 97,813 |
Risk Grade 7 | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 58,904 |
2019 | 1,203 |
Prior | 118 |
Revolving Loans | 8,774 |
Total | 68,999 |
Risk Grade 7 | Construction, commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Prior | 290 |
Total | 290 |
Risk Grade 7 | Construction, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2023 | 21 |
2022 | 864 |
Total | 885 |
Risk Grade 7 | Mortgage, Commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 6,344 |
2019 | 774 |
Prior | 9,176 |
Revolving Loans | 100 |
Total | 16,394 |
Risk Grade 7 | Mortgage, Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 369 |
2021 | 1,228 |
2020 | 1,659 |
2019 | 461 |
Prior | 6,413 |
Revolving Loans | 596 |
Total | 10,726 |
Risk Grade 7 | Consumer [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2022 | 50 |
2021 | 109 |
2020 | 115 |
2019 | 104 |
Prior | 141 |
Total | $ 519 |

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