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Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Summary of loans, by loan type |  |
Total loans | $ 8,112,481 | $ 8,058,961
Commercial, financial and agricultural |  |
Summary of loans, by loan type |  |
Total loans | 4,715,769 | 4,802,622
Real estate - mortgage |  |
Summary of loans, by loan type |  |
Total loans | 954,469 | 938,901
Obligations of states and political subdivisions |  |
Summary of loans, by loan type |  |
Total loans | 2,219,432 | 2,091,622
Consumer |  |
Summary of loans, by loan type |  |
Total loans | 46,358 | 45,121
Foreign. |  |
Summary of loans, by loan type |  |
Total loans | $ 176,453 | $ 180,695

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