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Loans and Allowance for Credit Losses - Summary of Recorded Investment of Loans Held for Investment by Internal Loan Grade by Year of Orgination (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | $ 196,370 |  |
2022 | 863,939 |  |
2021 | 357,834 |  |
2020 | 292,593 |  |
2019 | 105,787 |  |
Prior | 334,975 |  |
Revolving Loans | 278,619 |  |
Total | 2,430,117 |  |
Current period gross charge-offs | 31,819 | $ 8,451 | $ 2,541
Current period gross charge-offs 2023 | 3,759 |  |
Current period gross charge-offs 2022 | 22,251 |  |
Current period gross charge-offs 2021 | 1,285 |  |
Current period gross charge-offs 2020 | 2,628 |  |
Current period gross charge-offs 2019 | 1,272 |  |
Current period gross charge-offs prior | 463 |  |
Current period gross charge-offs revolving | 161 |  |
Commercial And Industrial [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 42,393 |  |
2022 | 189,770 |  |
2021 | 48,823 |  |
2020 | 32,563 |  |
2019 | 9,579 |  |
Prior | 16,250 |  |
Revolving Loans | 167,180 |  |
Total | 506,558 |  |
Current period gross charge-offs | 27,839 | 4,779 | 1,098
Current period gross charge-offs 2023 | 2,266 |  |
Current period gross charge-offs 2022 | 21,086 |  |
Current period gross charge-offs 2021 | 1,067 |  |
Current period gross charge-offs 2020 | 1,920 |  |
Current period gross charge-offs 2019 | 1,211 |  |
Current period gross charge-offs prior | 164 |  |
Current period gross charge-offs revolving | 125 |  |
Paycheck Protection Program [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 2,386 |  |
Total | 2,386 |  |
Construction, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 12,865 |  |
2022 | 96,805 |  |
2021 | 34,144 |  |
2020 | 14,983 |  |
2019 | 6,358 |  |
Prior | 6,703 |  |
Revolving Loans | 8,194 |  |
Total | 180,052 |  |
Current period gross charge-offs | 36 |  |
Current period gross charge-offs 2023 | 0 |  |
Current period gross charge-offs 2019 | 8 |  |
Current period gross charge-offs prior | 28 |  |
Construction, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 33,464 |  |
2022 | 26,611 |  |
2021 | 3,867 |  |
2020 | 226 |  |
2019 | 941 |  |
Prior | 67 |  |
Revolving Loans | 10,656 |  |
Total | 75,832 |  |
Mortgage, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 17,835 |  |
2022 | 305,554 |  |
2021 | 138,497 |  |
2020 | 169,033 |  |
2019 | 55,258 |  |
Prior | 159,817 |  |
Revolving Loans | 24,546 |  |
Total | 870,540 |  |
Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 63,056 |  |
2022 | 229,954 |  |
2021 | 124,995 |  |
2020 | 72,921 |  |
2019 | 30,942 |  |
Prior | 149,575 |  |
Revolving Loans | 58,667 |  |
Total | 730,110 |  |
Current period gross charge-offs | 1,630 |  |
Current period gross charge-offs 2023 | 0 |  |
Current period gross charge-offs 2022 | 744 |  |
Current period gross charge-offs 2020 | 648 |  |
Current period gross charge-offs prior | 206 |  |
Current period gross charge-offs revolving | 32 |  |
Mortgage, Farmland [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 147 |  |
2022 | 729 |  |
2021 | 1,397 |  |
2019 | 1,520 |  |
Prior | 1,562 |  |
Revolving Loans | 115 |  |
Total | 5,470 |  |
Consumer [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 26,610 |  |
2022 | 14,516 |  |
2021 | 3,725 |  |
2020 | 2,867 |  |
2019 | 1,189 |  |
Prior | 1,001 |  |
Revolving Loans | 9,261 |  |
Total | 59,169 |  |
Current period gross charge-offs | 2,314 | $ 1,686 | $ 1,123
Current period gross charge-offs 2023 | 1,493 |  |
Current period gross charge-offs 2022 | 421 |  |
Current period gross charge-offs 2021 | 218 |  |
Current period gross charge-offs 2020 | 60 |  |
Current period gross charge-offs 2019 | 53 |  |
Current period gross charge-offs prior | 65 |  |
Current period gross charge-offs revolving | 4 |  |
Risk Grades 1 - 4 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 148,222 |  |
2022 | 736,510 |  |
2021 | 317,608 |  |
2020 | 256,565 |  |
2019 | 88,076 |  |
Prior | 278,644 |  |
Revolving Loans | 237,830 |  |
Total | 2,063,455 |  |
Risk Grades 1 - 4 | Commercial And Industrial [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 15,830 |  |
2022 | 114,291 |  |
2021 | 29,887 |  |
2020 | 25,429 |  |
2019 | 8,217 |  |
Prior | 14,200 |  |
Revolving Loans | 138,267 |  |
Total | 346,121 |  |
Risk Grades 1 - 4 | Paycheck Protection Program [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2021 | 2,386 |  |
Total | 2,386 |  |
Risk Grades 1 - 4 | Construction, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 8,533 |  |
2022 | 85,687 |  |
2021 | 33,344 |  |
2020 | 14,690 |  |
2019 | 6,358 |  |
Prior | 5,589 |  |
Revolving Loans | 4,367 |  |
Total | 158,568 |  |
Risk Grades 1 - 4 | Construction, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 31,611 |  |
2022 | 22,734 |  |
2021 | 3,867 |  |
2020 | 59 |  |
2019 | 741 |  |
Prior | 67 |  |
Revolving Loans | 10,656 |  |
Total | 69,735 |  |
Risk Grades 1 - 4 | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 14,671 |  |
2022 | 280,479 |  |
2021 | 121,257 |  |
2020 | 144,498 |  |
2019 | 42,226 |  |
Prior | 123,774 |  |
Revolving Loans | 20,332 |  |
Total | 747,237 |  |
Risk Grades 1 - 4 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 51,042 |  |
2022 | 218,375 |  |
2021 | 121,872 |  |
2020 | 69,165 |  |
2019 | 27,877 |  |
Prior | 132,986 |  |
Revolving Loans | 55,327 |  |
Total | 676,644 |  |
Risk Grades 1 - 4 | Mortgage, Farmland [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2022 | 729 |  |
2021 | 1,397 |  |
2019 | 1,520 |  |
Prior | 1,562 |  |
Revolving Loans | 115 |  |
Total | 5,323 |  |
Risk Grades 1 - 4 | Consumer [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 26,535 |  |
2022 | 14,215 |  |
2021 | 3,598 |  |
2020 | 2,724 |  |
2019 | 1,137 |  |
Prior | 466 |  |
Revolving Loans | 8,766 |  |
Total | 57,441 |  |
Risk Grades 5 - 6 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 47,325 |  |
2022 | 88,599 |  |
2021 | 23,246 |  |
2020 | 28,318 |  |
2019 | 16,070 |  |
Prior | 37,767 |  |
Revolving Loans | 31,513 |  |
Total | 272,838 |  |
Risk Grades 5 - 6 | Commercial And Industrial [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 26,563 |  |
2022 | 40,399 |  |
2021 | 12,759 |  |
2020 | 6,305 |  |
2019 | 819 |  |
Prior | 1,537 |  |
Revolving Loans | 19,722 |  |
Total | 108,104 |  |
Risk Grades 5 - 6 | Construction, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 4,213 |  |
2022 | 11,072 |  |
2021 | 760 |  |
2020 | 293 |  |
Prior | 738 |  |
Revolving Loans | 3,827 |  |
Total | 20,903 |  |
Risk Grades 5 - 6 | Construction, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 1,486 |  |
2022 | 2,672 |  |
2020 | 167 |  |
2019 | 200 |  |
Total | 4,525 |  |
Risk Grades 5 - 6 | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 2,841 |  |
2022 | 25,075 |  |
2021 | 9,038 |  |
2020 | 19,597 |  |
2019 | 12,921 |  |
Prior | 27,778 |  |
Revolving Loans | 4,214 |  |
Total | 101,464 |  |
Risk Grades 5 - 6 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 12,014 |  |
2022 | 9,339 |  |
2021 | 677 |  |
2020 | 1,944 |  |
2019 | 2,122 |  |
Prior | 7,281 |  |
Revolving Loans | 3,255 |  |
Total | 36,632 |  |
Risk Grades 5 - 6 | Mortgage, Farmland [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 147 |  |
Total | 147 |  |
Risk Grades 5 - 6 | Consumer [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 61 |  |
2022 | 42 |  |
2021 | 12 |  |
2020 | 12 |  |
2019 | 8 |  |
Prior | 433 |  |
Revolving Loans | 495 |  |
Total | 1,063 |  |
Risk Grade 7 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 823 |  |
2022 | 4,627 |  |
2021 | 14,426 |  |
2020 | 7,710 |  |
2019 | 1,641 |  |
Prior | 18,184 |  |
Revolving Loans | 9,276 |  |
Total | 56,687 |  |
Risk Grade 7 | Commercial And Industrial [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 0 |  |
2022 | 877 |  |
2021 | 3,623 |  |
2020 | 829 |  |
2019 | 543 |  |
Prior | 134 |  |
Revolving Loans | 9,191 |  |
Total | 15,197 |  |
Risk Grade 7 | Construction, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 119 |  |
2022 | 46 |  |
2021 | 40 |  |
Prior | 376 |  |
Total | 581 |  |
Risk Grade 7 | Construction, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 367 |  |
2022 | 1,205 |  |
Total | 1,572 |  |
Risk Grade 7 | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 323 |  |
2022 | 0 |  |
2021 | 8,202 |  |
2020 | 4,938 |  |
2019 | 111 |  |
Prior | 8,265 |  |
Total | 21,839 |  |
Risk Grade 7 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2022 | 2,240 |  |
2021 | 2,446 |  |
2020 | 1,812 |  |
2019 | 943 |  |
Prior | 9,307 |  |
Revolving Loans | 85 |  |
Total | 16,833 |  |
Risk Grade 7 | Consumer [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2023 | 14 |  |
2022 | 259 |  |
2021 | 115 |  |
2020 | 131 |  |
2019 | 44 |  |
Prior | 102 |  |
Total | 665 |  |
Risk Grade 8 |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2022 | 34,203 |  |
2021 | 2,554 |  |
Prior | 380 |  |
Total | 37,137 |  |
Risk Grade 8 | Commercial And Industrial [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2022 | 34,203 |  |
2021 | 2,554 |  |
2020 |  |  |
2019 |  |  |
Prior | 379 |  |
Revolving Loans |  |  |
Total | 37,136 |  |
Risk Grade 8 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Prior | 1 |  |
Total | $ 1 |  |

X
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