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Non Purchased Loans - Summary of Non-Purchased Loans and Leases (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Summary of loans |  |
Gross loans | $ 11,089,067 | $ 9,693,463
Unearned income | (4,329) | (3,825)
Loans, net of unearned income | 11,084,738 | 9,689,638
Commercial, financial, agricultural |  |
Summary of loans |  |
Gross loans | 2,648,062 | 1,367,972
Loans, net of unearned income | 2,648,062 | 1,367,972
Lease financing |  |
Summary of loans |  |
Gross loans | 87,257 | 85,700
Loans, net of unearned income | 82,928 |
Real estate – construction: |  |
Summary of loans |  |
Gross loans | 773,119 | 826,483
Loans, net of unearned income | 773,119 | 826,483
Real estate – construction: | Residential |  |
Summary of loans |  |
Gross loans | 264,525 | 289,050
Real estate – construction: | Commercial |  |
Summary of loans |  |
Gross loans | 508,594 | 537,433
Real estate – 1-4 family mortgage: |  |
Summary of loans |  |
Gross loans | 2,760,394 | 2,866,613
Loans, net of unearned income | 2,760,394 | 2,866,613
Real estate – 1-4 family mortgage: | Primary |  |
Summary of loans |  |
Gross loans | 1,762,897 | 1,781,948
Real estate – 1-4 family mortgage: | Home equity |  |
Summary of loans |  |
Gross loans | 537,615 | 573,540
Real estate – 1-4 family mortgage: | Rental/investment |  |
Summary of loans |  |
Gross loans | 306,378 | 335,100
Real estate – 1-4 family mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 153,504 | 176,025
Real estate – commercial mortgage: |  |
Summary of loans |  |
Gross loans | 4,577,009 | 4,244,265
Loans, net of unearned income | 4,577,009 | 4,244,265
Real estate – commercial mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 150,366 | 156,089
Real estate – commercial mortgage: | Owner-occupied |  |
Summary of loans |  |
Gross loans | 1,672,402 | 1,637,281
Real estate – commercial mortgage: | Non-owner occupied |  |
Summary of loans |  |
Gross loans | 2,754,241 | 2,450,895
Installment loans to individuals |  |
Summary of loans |  |
Gross loans | 243,226 | 302,430
Loans, net of unearned income | 243,226 | 384,305
Non purchased loans and leases |  |
Summary of loans |  |
Gross loans | 9,428,553 | 7,591,799
Unearned income | (4,329) | (3,825)
Loans, net of unearned income | 9,424,224 | 7,587,974
Non purchased loans and leases | Commercial, financial, agricultural |  |
Summary of loans |  |
Gross loans | 2,445,294 | 1,052,353
Non purchased loans and leases | Lease financing |  |
Summary of loans |  |
Gross loans | 87,257 | 85,700
Non purchased loans and leases | Real estate – construction: |  |
Summary of loans |  |
Gross loans | 738,873 | 774,901
Non purchased loans and leases | Real estate – construction: | Residential |  |
Summary of loans |  |
Gross loans | 261,432 | 272,643
Non purchased loans and leases | Real estate – construction: | Commercial |  |
Summary of loans |  |
Gross loans | 477,441 | 502,258
Non purchased loans and leases | Real estate – 1-4 family mortgage: |  |
Summary of loans |  |
Gross loans | 2,369,292 | 2,350,126
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Primary |  |
Summary of loans |  |
Gross loans | 1,517,528 | 1,449,219
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Home equity |  |
Summary of loans |  |
Gross loans | 442,380 | 456,265
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Rental/investment |  |
Summary of loans |  |
Gross loans | 272,811 | 291,931
Non purchased loans and leases | Real estate – 1-4 family mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 136,573 | 152,711
Non purchased loans and leases | Real estate – commercial mortgage: |  |
Summary of loans |  |
Gross loans | 3,610,642 | 3,128,876
Non purchased loans and leases | Real estate – commercial mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 117,672 | 116,085
Non purchased loans and leases | Real estate – commercial mortgage: | Owner-occupied |  |
Summary of loans |  |
Gross loans | 1,316,408 | 1,209,204
Non purchased loans and leases | Real estate – commercial mortgage: | Non-owner occupied |  |
Summary of loans |  |
Gross loans | 2,176,562 | 1,803,587
Non purchased loans and leases | Installment loans to individuals |  |
Summary of loans |  |
Gross loans | $ 177,195 | $ 199,843

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