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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 | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Sep. 30, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | $ 200,569 |  | $ 200,569 |  |
2022 | 824,797 |  | 824,797 |  |
2021 | 376,282 |  | 376,282 |  |
2020 | 311,874 |  | 311,874 |  |
2019 | 110,805 |  | 110,805 |  |
Prior | 376,640 |  | 376,640 |  |
Revolving Loans | 257,637 |  | 257,637 |  |
Total | 2,458,604 |  | 2,458,604 |  |
Current period gross charge-offs | 9,020 | $ 2,791 | 10,329 | $ 5,567 |
Current period gross charge-offs 2023 |  |  | 571 |  |
Current period gross charge-offs 2022 |  |  | 1,098 |  |
Current period gross charge-offs 2021 |  |  | 170 |  |
Current period gross charge-offs 2020 |  |  | 521 |  |
Current period gross charge-offs 2019 |  |  | 666 |  |
Current period gross charge-offs prior |  |  | 78 |  |
Current period gross charge-offs revolving |  |  | 7,225 |  |
Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 65,028 |  | 65,028 |  |
2022 | 194,112 |  | 194,112 |  |
2021 | 57,103 |  | 57,103 |  |
2020 | 41,936 |  | 41,936 |  |
2019 | 14,134 |  | 14,134 |  |
Prior | 18,956 |  | 18,956 |  |
Revolving Loans | 154,652 |  | 154,652 |  |
Total | 545,921 |  | 545,921 |  |
Current period gross charge-offs | 7,326 | 1,383 | 8,095 | 3,746 |
Current period gross charge-offs 2022 |  |  | 198 |  |
Current period gross charge-offs 2021 |  |  | 39 |  |
Current period gross charge-offs 2019 |  |  | 625 |  |
Current period gross charge-offs prior |  |  | 9 |  |
Current period gross charge-offs revolving |  |  | 7,224 |  |
Paycheck Protection Program [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2021 | 7,234 |  | 7,234 |  |
Total | 7,234 |  | 7,234 |  |
Construction, commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 4,684 |  | 4,684 |  |
2022 |  | 62,760 |  | 62,760 |
2021 | 52,790 |  | 52,790 |  |
2020 | 16,725 |  | 16,725 |  |
2019 | 2,345 |  | 2,345 |  |
Prior | 9,947 |  | 9,947 |  |
Revolving Loans | 16,612 |  | 16,612 |  |
Total | 165,863 |  | 165,863 |  |
Current period gross charge-offs |  |  | 28 |  |
Construction, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 27,236 |  | 27,236 |  |
2022 | 42,009 |  | 42,009 |  |
2021 | 8,471 |  | 8,471 |  |
2020 | 932 |  | 932 |  |
2019 | 1,194 |  | 1,194 |  |
Prior | 71 |  | 71 |  |
Revolving Loans | 2,286 |  | 2,286 |  |
Total | 82,199 |  | 82,199 |  |
Mortgage, Commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 29,516 |  | 29,516 |  |
2022 | 294,156 |  | 294,156 |  |
2021 | 124,779 |  | 124,779 |  |
2020 | 172,947 |  | 172,947 |  |
2019 | 57,515 |  | 57,515 |  |
Prior | 184,987 |  | 184,987 |  |
Revolving Loans | 15,829 |  | 15,829 |  |
Total | 879,729 |  | 879,729 |  |
Mortgage, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 50,393 |  | 50,393 |  |
2022 | 213,748 |  | 213,748 |  |
2021 | 119,566 |  | 119,566 |  |
2020 | 75,270 |  | 75,270 |  |
2019 | 32,125 |  | 32,125 |  |
Prior | 159,535 |  | 159,535 |  |
Revolving Loans | 58,928 |  | 58,928 |  |
Total | 709,565 |  | 709,565 |  |
Current period gross charge-offs |  |  | 1,256 |  |
Current period gross charge-offs 2023 |  |  | 0 |  |
Current period gross charge-offs 2022 |  |  | 744 |  |
Current period gross charge-offs 2020 |  |  | 498 |  |
Current period gross charge-offs prior |  |  | 14 |  |
Mortgage, Farmland [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2022 | 729 |  | 729 |  |
2021 | 1,424 |  | 1,424 |  |
2019 | 1,549 |  | 1,549 |  |
Prior | 1,624 |  | 1,624 |  |
Revolving Loans | 257 |  | 257 |  |
Total | 5,583 |  | 5,583 |  |
Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 23,712 |  | 23,712 |  |
2022 | 17,283 |  | 17,283 |  |
2021 | 4,915 |  | 4,915 |  |
2020 | 4,064 |  | 4,064 |  |
2019 | 1,943 |  | 1,943 |  |
Prior | 1,520 |  | 1,520 |  |
Revolving Loans | 9,073 |  | 9,073 |  |
Total | 62,510 |  | 62,510 |  |
Current period gross charge-offs | 1,694 | $ 329 | 950 | $ 605 |
Current period gross charge-offs 2023 |  |  | 571 |  |
Current period gross charge-offs 2022 |  |  | 156 |  |
Current period gross charge-offs 2021 |  |  | 131 |  |
Current period gross charge-offs 2020 |  |  | 23 |  |
Current period gross charge-offs 2019 |  |  | 41 |  |
Current period gross charge-offs prior |  |  | 27 |  |
Current period gross charge-offs revolving |  |  | 1 |  |
Risk Grades 1 - 4 |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 172,079 |  | 172,079 |  |
2022 | 717,625 |  | 717,625 |  |
2021 | 343,874 |  | 343,874 |  |
2020 | 277,933 |  | 277,933 |  |
2019 | 92,868 |  | 92,868 |  |
Prior | 319,591 |  | 319,591 |  |
Revolving Loans | 226,555 |  | 226,555 |  |
Total | 2,150,525 |  | 2,150,525 |  |
Risk Grades 1 - 4 | Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 36,665 |  | 36,665 |  |
2022 | 131,441 |  | 131,441 |  |
2021 | 44,931 |  | 44,931 |  |
2020 | 31,890 |  | 31,890 |  |
2019 | 12,814 |  | 12,814 |  |
Prior | 17,085 |  | 17,085 |  |
Revolving Loans | 135,331 |  | 135,331 |  |
Total | 410,157 |  | 410,157 |  |
Risk Grades 1 - 4 | Paycheck Protection Program [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2021 | 7,234 |  | 7,234 |  |
Total | 7,234 |  | 7,234 |  |
Risk Grades 1 - 4 | Construction, commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 4,684 |  | 4,684 |  |
2022 | 56,296 |  | 56,296 |  |
2021 | 46,538 |  | 46,538 |  |
2020 | 16,193 |  | 16,193 |  |
2019 | 2,345 |  | 2,345 |  |
Prior | 8,865 |  | 8,865 |  |
Revolving Loans | 10,820 |  | 10,820 |  |
Total | 145,741 |  | 145,741 |  |
Risk Grades 1 - 4 | Construction, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 27,215 |  | 27,215 |  |
2022 | 39,151 |  | 39,151 |  |
2021 | 7,998 |  | 7,998 |  |
2020 | 347 |  | 347 |  |
2019 | 1,194 |  | 1,194 |  |
Prior | 71 |  | 71 |  |
Revolving Loans | 2,046 |  | 2,046 |  |
Total | 78,022 |  | 78,022 |  |
Risk Grades 1 - 4 | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 29,516 |  | 29,516 |  |
2022 | 268,410 |  | 268,410 |  |
2021 | 113,715 |  | 113,715 |  |
2020 | 153,897 |  | 153,897 |  |
2019 | 44,080 |  | 44,080 |  |
Prior | 144,333 |  | 144,333 |  |
Revolving Loans | 11,689 |  | 11,689 |  |
Total | 765,640 |  | 765,640 |  |
Risk Grades 1 - 4 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 50,358 |  | 50,358 |  |
2022 | 204,528 |  | 204,528 |  |
2021 | 117,255 |  | 117,255 |  |
2020 | 71,731 |  | 71,731 |  |
2019 | 29,032 |  | 29,032 |  |
Prior | 146,643 |  | 146,643 |  |
Revolving Loans | 57,415 |  | 57,415 |  |
Total | 676,962 |  | 676,962 |  |
Risk Grades 1 - 4 | Mortgage, Farmland [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2022 | 729 |  | 729 |  |
2021 | 1,424 |  | 1,424 |  |
2019 | 1,549 |  | 1,549 |  |
Prior | 1,624 |  | 1,624 |  |
Revolving Loans | 211 |  | 211 |  |
Total | 5,537 |  | 5,537 |  |
Risk Grades 1 - 4 | Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 23,641 |  | 23,641 |  |
2022 | 17,070 |  | 17,070 |  |
2021 | 4,779 |  | 4,779 |  |
2020 | 3,875 |  | 3,875 |  |
2019 | 1,854 |  | 1,854 |  |
Prior | 970 |  | 970 |  |
Revolving Loans | 9,043 |  | 9,043 |  |
Total | 61,232 |  | 61,232 |  |
Risk Grades 5 - 6 |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 28,454 |  | 28,454 |  |
2022 | 45,016 |  | 45,016 |  |
2021 | 21,481 |  | 21,481 |  |
2020 | 26,456 |  | 26,456 |  |
2019 | 16,240 |  | 16,240 |  |
Prior | 41,409 |  | 41,409 |  |
Revolving Loans | 28,714 |  | 28,714 |  |
Total | 207,770 |  | 207,770 |  |
Risk Grades 5 - 6 | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2021 | 6,252 |  | 6,252 |  |
Risk Grades 5 - 6 | Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 28,363 |  | 28,363 |  |
2022 | 1,904 |  | 1,904 |  |
2021 | 9,964 |  | 9,964 |  |
2020 | 6,793 |  | 6,793 |  |
2019 | 450 |  | 450 |  |
Prior | 1,827 |  | 1,827 |  |
Revolving Loans | 17,375 |  | 17,375 |  |
Total | 66,676 |  | 66,676 |  |
Risk Grades 5 - 6 | Construction, commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2022 | 6,464 |  | 6,464 |  |
2020 | 532 |  | 532 |  |
Prior | 840 |  | 840 |  |
Revolving Loans | 5,792 |  | 5,792 |  |
Total | 19,880 |  | 19,880 |  |
Risk Grades 5 - 6 | Construction, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2022 | 2,278 |  | 2,278 |  |
2021 | 473 |  | 473 |  |
2020 | 585 |  | 585 |  |
Revolving Loans | 240 |  | 240 |  |
Total | 3,576 |  | 3,576 |  |
Risk Grades 5 - 6 | Mortgage, Commercial [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Total | 96,542 |  | 96,542 |  |
Risk Grades 5 - 6 | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2022 | 25,746 |  | 25,746 |  |
2021 | 4,757 |  | 4,757 |  |
2020 | 16,870 |  | 16,870 |  |
2019 | 13,304 |  | 13,304 |  |
Prior | 31,823 |  | 31,823 |  |
Revolving Loans | 4,042 |  | 4,042 |  |
Total |  |  |  |  | $ 17,547
Risk Grades 5 - 6 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 35 |  | 35 |  |
2022 | 8,570 |  | 8,570 |  |
2021 | 24 |  | 24 |  |
2020 | 1,605 |  | 1,605 |  |
2019 | 2,482 |  | 2,482 |  |
Prior | 6,475 |  | 6,475 |  |
Revolving Loans | 1,189 |  | 1,189 |  |
Total | 20,380 |  | 20,380 |  |
Risk Grades 5 - 6 | Mortgage, Farmland [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Revolving Loans | 46 |  | 46 |  |
Total | 46 |  | 46 |  |
Risk Grades 5 - 6 | Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 56 |  | 56 |  |
2022 | 54 |  | 54 |  |
2021 | 11 |  | 11 |  |
2020 | 71 |  | 71 |  |
2019 | 4 |  | 4 |  |
Prior | 444 |  | 444 |  |
Revolving Loans | 30 |  | 30 |  |
Total | 670 |  | 670 |  |
Risk Grade 7 |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 36 |  | 36 |  |
2022 | 56,818 |  | 56,818 |  |
2021 | 10,891 |  | 10,891 |  |
2020 | 7,485 |  | 7,485 |  |
2019 | 1,697 |  | 1,697 |  |
Prior | 15,640 |  | 15,640 |  |
Revolving Loans | 1,989 |  | 1,989 |  |
Total | 94,556 |  | 94,556 |  |
Risk Grade 7 | Commercial and Industrial [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 0 |  | 0 |  |
2022 | 55,429 |  | 55,429 |  |
2021 | 2,172 |  | 2,172 |  |
2020 | 3,253 |  | 3,253 |  |
2019 | 870 |  | 870 |  |
Prior | 44 |  | 44 |  |
Revolving Loans | 1,567 |  | 1,567 |  |
Total | 63,335 |  | 63,335 |  |
Risk Grade 7 | Construction, commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Prior | 242 |  | 242 |  |
Total | 242 |  | 242 |  |
Risk Grade 7 | Construction, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 21 |  | 21 |  |
2022 | 580 |  | 580 |  |
Total | 601 |  | 601 |  |
Risk Grade 7 | Mortgage, Commercial [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2021 | 6,307 |  | 6,307 |  |
2020 | 2,180 |  | 2,180 |  |
2019 | 131 |  | 131 |  |
Prior | 8,831 |  | 8,831 |  |
Risk Grade 7 | Mortgage, Residential [Member] | Real Estate [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2022 | 650 |  | 650 |  |
2021 | 2,287 |  | 2,287 |  |
2020 | 1,934 |  | 1,934 |  |
2019 | 611 |  | 611 |  |
Prior | 6,417 |  | 6,417 |  |
Revolving Loans | 324 |  | 324 |  |
Total | 12,223 |  | 12,223 |  |
Risk Grade 7 | Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 15 |  | 15 |  |
2022 | 159 |  | 159 |  |
2021 | 125 |  | 125 |  |
2020 | 118 |  | 118 |  |
2019 | 85 |  | 85 |  |
Prior | 106 |  | 106 |  |
Total | 608 |  | 608 |  |
Risk Grade 8 |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
2023 | 0 |  | 0 |  |
2022 | 5,338 |  | 5,338 |  |
2021 | 36 |  | 36 |  |
2020 | 0 |  | 0 |  |
2019 | 0 |  | 0 |  |
Prior | 0 |  | 0 |  |
Revolving Loans | 379 |  | 379 |  |
Total | $ 5,753 |  | $ 5,753 |  |

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