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Purchased Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020
--- | --- | --- | ---
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | $ 10,688,408 | $ 10,933,647 | $ 9,769,377
Commercial, financial, agricultural |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 2,249,287 |  | 1,424,576
Real estate – construction: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 955,918 |  | 787,895
Real estate – 1-4 family mortgage |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 2,686,061 |  | 2,846,301
Real estate – commercial mortgage: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 4,549,027 |  | 4,308,708
Installment loans to individuals |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 172,859 |  | $ 317,218
Purchased loans |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 1,395,906 | 1,514,107 |
Purchased loans | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 1,366,959 | 1,483,056 |
Current Loans | 1,360,859 | 1,474,138 |
Purchased loans | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Loans past due | 5,971 | 8,651 |
Purchased loans | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Loans past due | 129 | 267 |
Purchased loans | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 28,947 | 31,051 |
Current Loans | 21,206 | 15,412 |
Purchased loans | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Loans past due | 416 | 8,671 |
Purchased loans | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Loans past due | 7,325 | 6,968 |
Purchased loans | Commercial, financial, agricultural |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 143,843 | 176,513 |
Purchased loans | Commercial, financial, agricultural | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 133,655 | 163,658 |
Loans, net of unearned income | 133,870 | 164,577 |
Purchased loans | Commercial, financial, agricultural | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 213 | 818 |
Purchased loans | Commercial, financial, agricultural | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 2 | 101 |
Purchased loans | Commercial, financial, agricultural | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 8,146 | 9,838 |
Loans, net of unearned income | 9,973 | 11,936 |
Purchased loans | Commercial, financial, agricultural | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 65 | 74 |
Purchased loans | Commercial, financial, agricultural | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 1,762 | 2,024 |
Purchased loans | Real estate – construction: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 22,332 | 30,952 |
Purchased loans | Real estate – construction: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 22,332 | 30,952 |
Loans, net of unearned income | 22,332 | 30,952 |
Purchased loans | Real estate – construction: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Real estate – construction: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Real estate – construction: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 0 | 0 |
Loans, net of unearned income | 0 | 0 |
Purchased loans | Real estate – construction: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Real estate – construction: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Real estate – 1-4 family mortgage |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 305,141 | 341,744 |
Purchased loans | Real estate – 1-4 family mortgage | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 293,109 | 330,536 |
Loans, net of unearned income | 297,018 | 333,644 |
Purchased loans | Real estate – 1-4 family mortgage | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 3,877 | 2,977 |
Purchased loans | Real estate – 1-4 family mortgage | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 32 | 131 |
Purchased loans | Real estate – 1-4 family mortgage | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 3,297 | 3,212 |
Loans, net of unearned income | 8,123 | 8,100 |
Purchased loans | Real estate – 1-4 family mortgage | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 339 | 691 |
Purchased loans | Real estate – 1-4 family mortgage | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 4,487 | 4,197 |
Purchased loans | Real estate – commercial mortgage: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 872,867 | 905,223 |
Purchased loans | Real estate – commercial mortgage: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 861,610 | 891,653 |
Loans, net of unearned income | 862,246 | 894,483 |
Purchased loans | Real estate – commercial mortgage: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 586 | 2,830 |
Purchased loans | Real estate – commercial mortgage: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 50 | 0 |
Purchased loans | Real estate – commercial mortgage: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 9,663 | 2,254 |
Loans, net of unearned income | 10,621 | 10,740 |
Purchased loans | Real estate – commercial mortgage: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 7,875 |
Purchased loans | Real estate – commercial mortgage: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 958 | 611 |
Purchased loans | Installment loans to individuals |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 51,723 | 59,675 |
Purchased loans | Installment loans to individuals | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 50,153 | 57,339 |
Loans, net of unearned income | 51,493 | 59,400 |
Purchased loans | Installment loans to individuals | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 1,295 | 2,026 |
Purchased loans | Installment loans to individuals | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 45 | 35 |
Purchased loans | Installment loans to individuals | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 100 | 108 |
Loans, net of unearned income | 230 | 275 |
Purchased loans | Installment loans to individuals | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 12 | 31 |
Purchased loans | Installment loans to individuals | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 118 | 136 |
Purchased loans | Residential | Real estate – construction: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 2,561 | 2,859 |
Purchased loans | Residential | Real estate – construction: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 2,561 | 2,859 |
Loans, net of unearned income | 2,561 | 2,859 |
Purchased loans | Residential | Real estate – construction: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Residential | Real estate – construction: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Residential | Real estate – construction: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 0 | 0 |
Loans, net of unearned income | 0 | 0 |
Purchased loans | Residential | Real estate – construction: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Residential | Real estate – construction: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Commercial | Real estate – construction: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 19,771 | 28,093 |
Purchased loans | Commercial | Real estate – construction: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 19,771 | 28,093 |
Loans, net of unearned income | 19,771 | 28,093 |
Purchased loans | Commercial | Real estate – construction: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Commercial | Real estate – construction: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Commercial | Real estate – construction: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 0 | 0 |
Loans, net of unearned income | 0 | 0 |
Purchased loans | Commercial | Real estate – construction: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Commercial | Real estate – construction: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Primary | Real estate – 1-4 family mortgage |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 190,539 | 214,770 |
Purchased loans | Primary | Real estate – 1-4 family mortgage | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 181,372 | 206,635 |
Loans, net of unearned income | 184,202 | 209,103 |
Purchased loans | Primary | Real estate – 1-4 family mortgage | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 2,819 | 2,394 |
Purchased loans | Primary | Real estate – 1-4 family mortgage | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 11 | 74 |
Purchased loans | Primary | Real estate – 1-4 family mortgage | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 2,528 | 2,181 |
Loans, net of unearned income | 6,337 | 5,667 |
Purchased loans | Primary | Real estate – 1-4 family mortgage | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 339 | 687 |
Purchased loans | Primary | Real estate – 1-4 family mortgage | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 3,470 | 2,799 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 72,413 | 80,392 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 70,110 | 78,739 |
Loans, net of unearned income | 70,988 | 79,076 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 857 | 294 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 21 | 43 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 665 | 638 |
Loans, net of unearned income | 1,425 | 1,316 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 4 |
Purchased loans | Home equity | Real estate – 1-4 family mortgage | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 760 | 674 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 28,800 | 31,928 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 28,338 | 30,931 |
Loans, net of unearned income | 28,473 | 31,125 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 135 | 180 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 14 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 70 | 79 |
Loans, net of unearned income | 327 | 803 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Rental/investment | Real estate – 1-4 family mortgage | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 257 | 724 |
Purchased loans | Land development | Real estate – 1-4 family mortgage |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 13,389 | 14,654 |
Purchased loans | Land development | Real estate – 1-4 family mortgage | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 13,289 | 14,231 |
Loans, net of unearned income | 13,355 | 14,340 |
Purchased loans | Land development | Real estate – 1-4 family mortgage | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 66 | 109 |
Purchased loans | Land development | Real estate – 1-4 family mortgage | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Land development | Real estate – 1-4 family mortgage | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 34 | 314 |
Loans, net of unearned income | 34 | 314 |
Purchased loans | Land development | Real estate – 1-4 family mortgage | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Land development | Real estate – 1-4 family mortgage | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Land development | Real estate – commercial mortgage: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 25,588 | 29,454 |
Purchased loans | Land development | Real estate – commercial mortgage: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 25,245 | 28,962 |
Loans, net of unearned income | 25,245 | 29,074 |
Purchased loans | Land development | Real estate – commercial mortgage: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 112 |
Purchased loans | Land development | Real estate – commercial mortgage: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Land development | Real estate – commercial mortgage: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 205 | 216 |
Loans, net of unearned income | 343 | 380 |
Purchased loans | Land development | Real estate – commercial mortgage: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Land development | Real estate – commercial mortgage: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 138 | 164 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 300,616 | 323,041 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 297,666 | 317,997 |
Loans, net of unearned income | 298,302 | 320,508 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 586 | 2,511 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 50 | 0 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 1,639 | 1,893 |
Loans, net of unearned income | 2,314 | 2,533 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 193 |
Purchased loans | Owner-occupied | Real estate – commercial mortgage: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 675 | 447 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: |  |  |
Past due and nonaccrual loans |  |  |
Loans, net of unearned income | 546,663 | 552,728 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: | Accruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 538,699 | 544,694 |
Loans, net of unearned income | 538,699 | 544,901 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: | Accruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 207 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: | Accruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 0 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: | Nonaccruing loans |  |  |
Past due and nonaccrual loans |  |  |
Current, gross | 7,819 | 145 |
Loans, net of unearned income | 7,964 | 7,827 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: | Nonaccruing loans | 30-89 Days Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | 0 | 7,682 |
Purchased loans | Non-owner occupied | Real estate – commercial mortgage: | Nonaccruing loans | 90 Days or More Past Due |  |  |
Past due and nonaccrual loans |  |  |
Past due, gross | $ 145 | $ 0 |

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