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Loans - Summary of Loans and Leases (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Summary of loans |  |
Gross loans | $ 11,585,458 | $ 10,024,981
Unearned income | (7,154) | (4,067)
Loans, net of unearned income | 11,578,304 | 10,020,914
Commercial, financial, agricultural |  |
Summary of loans |  |
Gross loans | 1,673,883 | 1,423,270
Loans, net of unearned income | 1,673,883 | 1,423,270
Lease financing |  |
Summary of loans |  |
Gross loans | 122,167 | 80,192
Loans, net of unearned income | 115,013 | 76,125
Real estate – construction: |  |
Summary of loans |  |
Gross loans | 1,330,337 | 1,104,896
Loans, net of unearned income | 1,330,337 | 1,104,896
Real estate – construction: | Residential |  |
Summary of loans |  |
Gross loans | 355,500 | 302,275
Real estate – construction: | Commercial |  |
Summary of loans |  |
Gross loans | 974,837 | 802,621
Real estate – 1-4 family mortgage: |  |
Summary of loans |  |
Gross loans | 3,216,263 | 2,724,246
Loans, net of unearned income | 3,216,263 | 2,724,246
Real estate – 1-4 family mortgage: | Primary |  |
Summary of loans |  |
Gross loans | 2,222,856 | 1,816,120
Real estate – 1-4 family mortgage: | Home equity |  |
Summary of loans |  |
Gross loans | 501,906 | 474,604
Real estate – 1-4 family mortgage: | Rental/investment |  |
Summary of loans |  |
Gross loans | 334,382 | 288,474
Real estate – 1-4 family mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 157,119 | 145,048
Real estate – 1-4 family mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 157,119 | 145,048
Real estate – commercial mortgage: |  |
Summary of loans |  |
Gross loans | 5,118,063 | 4,549,037
Loans, net of unearned income | 5,118,063 | 4,549,037
Real estate – commercial mortgage: | Owner-occupied |  |
Summary of loans |  |
Gross loans | 1,539,296 | 1,563,351
Real estate – commercial mortgage: | Non-owner occupied |  |
Summary of loans |  |
Gross loans | 3,452,910 | 2,856,947
Real estate – commercial mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 125,857 | 128,739
Installment loans to individuals |  |
Summary of loans |  |
Gross loans | 124,745 | 143,340
Loans, net of unearned income | $ 124,745 | $ 143,340

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