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Non Purchased Loans - Summary of Non-Purchased Loans and Leases (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020
--- | --- | --- | ---
Summary of loans |  |  |
Gross loans | $ 10,692,423 | $ 10,937,807 |
Unearned income | (4,015) | (4,160) |
Loans, net of unearned income | 10,688,408 | 10,933,647 | $ 9,769,377
Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 2,249,287 | 2,536,984 |
Loans, net of unearned income | 2,249,287 |  | 1,424,576
Lease financing |  |  |
Summary of loans |  |  |
Gross loans | 79,271 | 80,022 |
Loans, net of unearned income | 75,256 |  | 84,679
Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 955,918 | 858,104 |
Loans, net of unearned income | 955,918 |  | 787,895
Real estate – construction: | Residential |  |  |
Summary of loans |  |  |
Gross loans | 255,356 | 246,673 |
Real estate – construction: | Commercial |  |  |
Summary of loans |  |  |
Gross loans | 700,562 | 611,431 |
Real estate – 1-4 family mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 2,686,061 | 2,698,308 |
Loans, net of unearned income | 2,686,061 |  | 2,846,301
Real estate – 1-4 family mortgage: | Primary |  |  |
Summary of loans |  |  |
Gross loans | 1,766,751 | 1,750,951 |
Real estate – 1-4 family mortgage: | Home equity |  |  |
Summary of loans |  |  |
Gross loans | 504,620 | 513,160 |
Real estate – 1-4 family mortgage: | Rental/investment |  |  |
Summary of loans |  |  |
Gross loans | 285,779 | 296,364 |
Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 4,549,027 | 4,554,852 |
Loans, net of unearned income | 4,549,027 |  | 4,308,708
Real estate – commercial mortgage: | Owner-occupied |  |  |
Summary of loans |  |  |
Gross loans | 1,644,770 | 1,657,806 |
Real estate – commercial mortgage: | Non-owner occupied |  |  |
Summary of loans |  |  |
Gross loans | 2,767,869 | 2,747,467 |
Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | 172,859 | 209,537 |
Loans, net of unearned income | 172,859 |  | $ 317,218
Non purchased loans and leases |  |  |
Summary of loans |  |  |
Gross loans | 9,296,517 | 9,423,700 |
Unearned income | (4,015) | (4,160) |
Loans, net of unearned income | 9,292,502 | 9,419,540 |
Non purchased loans and leases | Paycheck Protection Program |  |  |
Summary of loans |  |  |
Loans, net of unearned income | 860,864 | 1,128,703 |
Non purchased loans and leases | Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 2,105,444 | 2,360,471 |
Non purchased loans and leases | Lease financing |  |  |
Summary of loans |  |  |
Gross loans | 79,271 | 80,022 |
Non purchased loans and leases | Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 933,586 | 827,152 |
Non purchased loans and leases | Real estate – construction: | Residential |  |  |
Summary of loans |  |  |
Gross loans | 252,795 | 243,814 |
Non purchased loans and leases | Real estate – construction: | Commercial |  |  |
Summary of loans |  |  |
Gross loans | 680,791 | 583,338 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 2,380,920 | 2,356,564 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Primary |  |  |
Summary of loans |  |  |
Gross loans | 1,576,212 | 1,536,181 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Home equity |  |  |
Summary of loans |  |  |
Gross loans | 432,207 | 432,768 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Rental/investment |  |  |
Summary of loans |  |  |
Gross loans | 256,979 | 264,436 |
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 115,522 | 123,179 |
Non purchased loans and leases | Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 3,676,160 | 3,649,629 |
Non purchased loans and leases | Real estate – commercial mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 110,800 | 120,125 |
Non purchased loans and leases | Real estate – commercial mortgage: | Owner-occupied |  |  |
Summary of loans |  |  |
Gross loans | 1,344,154 | 1,334,765 |
Non purchased loans and leases | Real estate – commercial mortgage: | Non-owner occupied |  |  |
Summary of loans |  |  |
Gross loans | 2,221,206 | 2,194,739 |
Non purchased loans and leases | Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | $ 121,136 | $ 149,862 |

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