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Allowance for Credit Losses - Portfolio Credit Quality (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Loan portfolio by credit quality indicator |  |  |
2024 | $ 3,472,021 |  |
2023 | 2,298,973 | $ 3,364,226 |
2022 | 1,284,843 | 1,928,023 |
2021 | 826,553 | 1,328,045 |
2020 | 404,659 | 609,341 |
2019/Prior | 522,777 | 295,840 |
Prior |  | 533,486 |
Total loans | 8,809,826 | 8,058,961 |
Current-period gross writeoffs |  |  |
Total | 36,608 | 10,184 | $ 9,479
Commercial, financial and agricultural |  |  |
Loan portfolio by credit quality indicator |  |  |
Total loans | 5,089,721 | 4,802,622 |
Commercial, financial and agricultural | Domestic | Commercial |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 995,267 |  |
2023 | 405,836 | 811,918 |
2022 | 135,176 | 305,621 |
2021 | 214,824 | 364,498 |
2020 | 37,670 | 50,602 |
2019/Prior | 63,030 | 21,468 |
Prior |  | 74,123 |
Total loans | 1,851,803 | 1,628,230 |
Current-period gross writeoffs |  |  |
2024 | 5,711 |  |
2023 | 2,689 | 7,053 |
2022 | 25,686 | 2,187 |
2021 | 44 | 155 |
2020 | 14 | 264 |
2019 |  | 2 |
Prior | 5 |  |
Prior |  | 3 |
Total | 34,149 | 9,664 | 9,050
Commercial, financial and agricultural | Domestic | Commercial | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 993,045 |  |
2023 | 343,212 | 791,233 |
2022 | 135,057 | 272,919 |
2021 | 214,702 | 364,271 |
2020 | 37,670 | 50,602 |
2019/Prior | 63,030 | 21,468 |
Prior |  | 74,119 |
Total loans | 1,786,716 | 1,574,612 |
Commercial, financial and agricultural | Domestic | Commercial | Special Mention |  |  |
Loan portfolio by credit quality indicator |  |  |
2023 |  | 7,613 |
2022 |  | 1,800 |
2021 |  | 164 |
Total loans |  | 9,577 |
Commercial, financial and agricultural | Domestic | Commercial | Watch List - Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2023 | 11,113 | 11,865 |
Total loans | 11,113 | 11,865 |
Commercial, financial and agricultural | Domestic | Commercial | Watch List - Substandard |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 1,341 |  |
2023 | 327 | 1,180 |
2022 | 74 | 92 |
2021 | 122 | 28 |
Prior |  | 4 |
Total loans | 1,864 | 1,304 |
Commercial, financial and agricultural | Domestic | Commercial | Watch List - Doubtful |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 881 |  |
2023 | 51,184 | 27 |
2022 | 45 | 30,810 |
2021 |  | 35 |
Total loans | 52,110 | 30,872 |
Commercial real estate |  |  |
Loan portfolio by credit quality indicator |  |  |
Total loans | 2,484,454 | 2,091,622 |
Commercial real estate | Domestic | Commercial real estate construction development |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 1,029,750 |  |
2023 | 937,180 | 966,695 |
2022 | 330,470 | 687,012 |
2021 | 144,221 | 324,238 |
2020 | 39,908 | 96,400 |
2019/Prior | 2,925 | 14,058 |
Prior |  | 3,219 |
Total loans | 2,484,454 | 2,091,622 |
Current-period gross writeoffs |  |  |
2023 | 1,146 |  |
2022 | 1,082 |  |
Total | 2,228 |  | 2
Commercial real estate | Domestic | Commercial real estate construction development | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 1,029,399 |  |
2023 | 921,180 | 938,739 |
2022 | 322,348 | 674,037 |
2021 | 144,221 | 324,238 |
2020 | 39,908 | 96,400 |
2019/Prior | 2,925 | 14,058 |
Prior |  | 3,219 |
Total loans | 2,459,981 | 2,050,691 |
Commercial real estate | Domestic | Commercial real estate construction development | Special Mention |  |  |
Loan portfolio by credit quality indicator |  |  |
2023 | 16,000 |  |
Total loans | 16,000 |  |
Commercial real estate | Domestic | Commercial real estate construction development | Watch List - Substandard |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 278 |  |
2023 |  | 25,230 |
Total loans | 278 | 25,230 |
Commercial real estate | Domestic | Commercial real estate construction development | Watch List - Doubtful |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 73 |  |
2023 |  | 2,726 |
2022 | 8,122 | 12,975 |
Total loans | 8,195 | 15,701 |
Commercial real estate | Domestic | Commercial real estate: farmland & commercial |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 903,313 |  |
2023 | 699,730 | 1,040,592 |
2022 | 545,802 | 631,029 |
2021 | 312,757 | 419,048 |
2020 | 220,867 | 270,009 |
2019/Prior | 245,334 | 184,248 |
Prior |  | 248,627 |
Total loans | 2,927,803 | 2,793,553 |
Current-period gross writeoffs |  |  |
Total |  |  | 16
Commercial real estate | Domestic | Commercial real estate: farmland & commercial | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 814,273 |  |
2023 | 631,806 | 888,878 |
2022 | 531,035 | 628,653 |
2021 | 312,757 | 415,458 |
2020 | 220,510 | 267,705 |
2019/Prior | 245,334 | 184,164 |
Prior |  | 248,626 |
Total loans | 2,755,715 | 2,633,484 |
Commercial real estate | Domestic | Commercial real estate: farmland & commercial | Special Mention |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 643 |  |
2023 | 67,567 | 5,205 |
2021 |  | 3,357 |
Total loans | 68,210 | 8,562 |
Commercial real estate | Domestic | Commercial real estate: farmland & commercial | Watch List - Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 16,490 |  |
2023 |  | 16,654 |
2022 |  | 87 |
2021 |  | 233 |
Total loans | 16,490 | 16,974 |
Commercial real estate | Domestic | Commercial real estate: farmland & commercial | Watch List - Substandard |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 18,934 |  |
2023 | 242 | 129,644 |
2022 | 2,122 | 2,201 |
2020 | 357 | 2,304 |
2019/Prior |  | 84 |
Prior |  | 1 |
Total loans | 21,655 | 134,234 |
Commercial real estate | Domestic | Commercial real estate: farmland & commercial | Watch List - Doubtful |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 52,973 |  |
2023 | 115 | 211 |
2022 | 12,645 | 88 |
Total loans | 65,733 | 299 |
Commercial real estate | Domestic | Commercial real estate: multifamily |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 107,993 |  |
2023 | 36,602 | 123,523 |
2022 | 108,830 | 94,647 |
2021 | 18,621 | 42,081 |
2020 | 8,198 | 73,652 |
2019/Prior | 29,871 | 10,743 |
Prior |  | 36,193 |
Total loans | 310,115 | 380,839 |
Commercial real estate | Domestic | Commercial real estate: multifamily | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 90,092 |  |
2023 | 11,538 | 123,523 |
2022 | 108,830 | 94,551 |
2021 | 18,621 | 42,081 |
2020 | 8,198 | 73,652 |
2019/Prior | 29,871 | 10,743 |
Prior |  | 36,193 |
Total loans | 267,150 | 380,743 |
Commercial real estate | Domestic | Commercial real estate: multifamily | Watch List - Doubtful |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 17,901 |  |
2023 | 25,064 |  |
2022 |  | 96 |
2021 |  |  |
2020 |  |  |
2019/Prior |  |  |
Prior |  |  |
Total loans | 42,965 | 96 |
Real estate - mortgage |  |  |
Loan portfolio by credit quality indicator |  |  |
Total loans | 999,313 | 938,901 |
Real estate - mortgage | Domestic | Residential First Lien |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 180,861 |  |
2023 | 107,100 | 180,127 |
2022 | 81,640 | 83,661 |
2021 | 57,777 | 68,409 |
2020 | 29,316 | 39,935 |
2019/Prior | 73,390 | 27,499 |
Prior |  | 78,401 |
Total loans | 530,084 | 478,032 |
Current-period gross writeoffs |  |  |
Prior | 46 |  |
Prior |  | 43 |
Total | 46 | 43 | 160
Real estate - mortgage | Domestic | Residential First Lien | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 180,743 |  |
2023 | 107,100 | 180,127 |
2022 | 81,618 | 83,568 |
2021 | 57,503 | 68,082 |
2020 | 29,316 | 39,935 |
2019/Prior | 73,390 | 27,499 |
Prior |  | 78,306 |
Total loans | 529,670 | 477,517 |
Real estate - mortgage | Domestic | Residential First Lien | Watch List - Substandard |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 95 |  |
2021 | 274 | 327 |
Prior |  | 95 |
Total loans | 369 | 422 |
Real estate - mortgage | Domestic | Residential First Lien | Watch List - Doubtful |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 23 |  |
2022 | 22 | 93 |
Total loans | 45 | 93 |
Real estate - mortgage | Domestic | Residential Junior Lien |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 91,343 |  |
2023 | 73,740 | 88,628 |
2022 | 65,144 | 76,845 |
2021 | 70,969 | 96,411 |
2020 | 65,799 | 76,490 |
2019/Prior | 102,234 | 34,870 |
Prior |  | 87,625 |
Total loans | 469,229 | 460,869 |
Current-period gross writeoffs |  |  |
Prior |  | 298 |
Total |  | 298 | 28
Real estate - mortgage | Domestic | Residential Junior Lien | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 91,202 |  |
2023 | 73,740 | 88,628 |
2022 | 65,144 | 76,845 |
2021 | 70,969 | 96,411 |
2020 | 65,799 | 76,490 |
2019/Prior | 102,234 | 34,870 |
Prior |  | 87,625 |
Total loans | 469,088 | 460,869 |
Real estate - mortgage | Domestic | Residential Junior Lien | Watch List - Doubtful |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 141 |  |
Total loans | 141 |  |
Consumer |  |  |
Loan portfolio by credit quality indicator |  |  |
Total loans | 49,777 | 45,121 |
Consumer | Domestic |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 38,778 |  |
2023 | 8,137 | 36,639 |
2022 | 904 | 5,366 |
2021 | 422 | 1,043 |
2020 | 22 | 237 |
2019/Prior | 1,514 | 157 |
Prior |  | 1,679 |
Total loans | 49,777 | 45,121 |
Current-period gross writeoffs |  |  |
2024 | 43 |  |
2023 | 120 | 54 |
2022 | 22 | 115 |
2021 |  | 9 |
2019 |  | 1 |
Total | 185 | 179 | $ 223
Consumer | Domestic | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 38,778 |  |
2023 | 8,137 | 36,639 |
2022 | 904 | 5,366 |
2021 | 422 | 1,043 |
2020 | 22 | 237 |
2019/Prior | 1,514 | 157 |
Prior |  | 1,679 |
Total loans | 49,777 | 45,121 |
Foreign |  |  |
Loan portfolio by credit quality indicator |  |  |
Total loans | 186,561 | 180,695 |
Foreign | Foreign |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 124,716 |  |
2023 | 30,648 | 116,104 |
2022 | 16,877 | 43,842 |
2021 | 6,962 | 12,317 |
2020 | 2,879 | 2,016 |
2019/Prior | 4,479 | 2,797 |
Prior |  | 3,619 |
Total loans | 186,561 | 180,695 |
Foreign | Foreign | Pass |  |  |
Loan portfolio by credit quality indicator |  |  |
2024 | 124,716 |  |
2023 | 30,648 | 116,104 |
2022 | 16,877 | 43,842 |
2021 | 6,962 | 12,317 |
2020 | 2,879 | 2,016 |
2019/Prior | 4,479 | 2,797 |
Prior |  | 3,619 |
Total loans | $ 186,561 | $ 180,695 |

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