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Non Purchased Loans - Summary of Non-Purchased Loans and Leases (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | --- | ---
Summary of loans |  |  |
Gross loans | $ 10,021,105 | $ 10,937,807 |
Unearned income | (4,281) | (4,160) |
Loans, net of unearned income | 10,016,824 | 10,933,647 | $ 11,084,738
Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 1,436,019 | 2,536,984 |
Loans, net of unearned income | 1,436,019 |  | 2,648,062
Lease financing |  |  |
Summary of loans |  |  |
Gross loans | 83,496 | 80,022 |
Loans, net of unearned income | 79,215 |  | 82,928
Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 1,091,296 | 858,104 |
Loans, net of unearned income | 1,091,296 |  | 773,119
Real estate – construction: | Residential |  |  |
Summary of loans |  |  |
Gross loans | 307,825 | 246,673 |
Real estate – construction: | Commercial |  |  |
Summary of loans |  |  |
Gross loans | 783,471 | 611,431 |
Real estate – 1-4 family mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 2,724,743 | 2,698,308 |
Loans, net of unearned income | 2,724,743 |  | 2,760,394
Real estate – 1-4 family mortgage: | Primary |  |  |
Summary of loans |  |  |
Gross loans | 1,808,139 | 1,750,951 |
Real estate – 1-4 family mortgage: | Home equity |  |  |
Summary of loans |  |  |
Gross loans | 481,552 | 513,160 |
Real estate – 1-4 family mortgage: | Rental/investment |  |  |
Summary of loans |  |  |
Gross loans | 291,116 | 296,364 |
Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 4,535,730 | 4,554,852 |
Loans, net of unearned income | 4,535,730 |  | 4,577,009
Real estate – commercial mortgage: | Owner-occupied |  |  |
Summary of loans |  |  |
Gross loans | 1,630,227 | 1,657,806 |
Real estate – commercial mortgage: | Non-owner occupied |  |  |
Summary of loans |  |  |
Gross loans | 2,779,237 | 2,747,467 |
Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | 149,821 | 209,537 |
Loans, net of unearned income | 149,821 |  | $ 243,226
Non purchased loans and leases |  |  |
Summary of loans |  |  |
Gross loans | 8,880,161 | 9,423,700 |
Unearned income | (4,281) | (4,160) |
Loans, net of unearned income | 8,875,880 | 9,419,540 |
Non purchased loans and leases | Paycheck Protection Program |  |  |
Summary of loans |  |  |
Loans, net of unearned income | 67,462 | 1,128,703 |
Non purchased loans and leases | Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 1,321,569 | 2,360,471 |
Non purchased loans and leases | Lease financing |  |  |
Summary of loans |  |  |
Gross loans | 83,496 | 80,022 |
Non purchased loans and leases | Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 1,086,303 | 827,152 |
Non purchased loans and leases | Real estate – construction: | Residential |  |  |
Summary of loans |  |  |
Gross loans | 306,537 | 243,814 |
Non purchased loans and leases | Real estate – construction: | Commercial |  |  |
Summary of loans |  |  |
Gross loans | 779,766 | 583,338 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 2,484,396 | 2,356,564 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Primary |  |  |
Summary of loans |  |  |
Gross loans | 1,657,195 | 1,536,181 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Home equity |  |  |
Summary of loans |  |  |
Gross loans | 424,860 | 432,768 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Rental/investment |  |  |
Summary of loans |  |  |
Gross loans | 268,609 | 264,436 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 133,732 | 123,179 |
Non purchased loans and leases | Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 3,794,898 | 3,649,629 |
Non purchased loans and leases | Real estate – commercial mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 106,475 | 120,125 |
Non purchased loans and leases | Real estate – commercial mortgage: | Owner-occupied |  |  |
Summary of loans |  |  |
Gross loans | 1,365,288 | 1,334,765 |
Non purchased loans and leases | Real estate – commercial mortgage: | Non-owner occupied |  |  |
Summary of loans |  |  |
Gross loans | 2,323,135 | 2,194,739 |
Non purchased loans and leases | Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | $ 109,499 | $ 149,862 |

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