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Loans - Schedule of Non-Purchased Loans and Leases (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | ---
Summary of loans |  |  |
Gross loans | $ 12,632,494 | $ 12,358,017 |
Unearned income | (4,846) | (6,787) |
Loans, net of unearned income | 12,627,648 | 12,351,230 | $ 12,168,023
Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 1,804,961 | 1,871,821 |
Loans, net of unearned income | 1,804,961 |  | 1,819,891
Lease financing |  |  |
Summary of loans |  |  |
Gross loans | 103,005 | 122,807 |
Loans, net of unearned income | 98,159 |  | 120,724
Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 1,198,838 | 1,333,397 |
Loans, net of unearned income | 1,198,838 |  | 1,407,364
Real estate – construction: | Residential |  |  |
Summary of loans |  |  |
Gross loans | 258,356 | 269,616 |
Real estate – construction: | Commercial |  |  |
Summary of loans |  |  |
Gross loans | 940,482 | 1,063,781 |
Real estate – 1-4 family mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 3,440,038 | 3,439,919 |
Loans, net of unearned income | 3,440,038 |  | 3,398,876
Real estate – 1-4 family mortgage: | Primary |  |  |
Summary of loans |  |  |
Gross loans | 2,409,912 | 2,422,482 |
Real estate – 1-4 family mortgage: | Home equity |  |  |
Summary of loans |  |  |
Gross loans | 537,372 | 522,688 |
Real estate – 1-4 family mortgage: | Rental/investment |  |  |
Summary of loans |  |  |
Gross loans | 390,029 | 373,755 |
Real estate – 1-4 family mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 102,725 | 120,994 |
Real estate – 1-4 family mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 102,725 | 120,994 |
Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 5,995,152 | 5,486,550 |
Loans, net of unearned income | 5,995,152 |  | 5,313,166
Real estate – commercial mortgage: | Owner-occupied |  |  |
Summary of loans |  |  |
Gross loans | 1,845,791 | 1,648,961 |
Real estate – commercial mortgage: | Non-owner occupied |  |  |
Summary of loans |  |  |
Gross loans | 4,045,666 | 3,733,174 |
Real estate – commercial mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 103,695 | 104,415 |
Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | 90,500 | $ 103,523 |
Loans, net of unearned income | $ 90,500 |  | $ 108,002

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