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Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Summary of loans, by loan type |  |
Total loans | $ 7,430,603 | $ 7,209,151
Commercial, financial and agricultural |  |
Summary of loans, by loan type |  |
Total loans | 4,373,373 | 4,497,444
Real estate - mortgage |  |
Summary of loans, by loan type |  |
Total loans | 865,994 | 867,831
Obligations of states and political subdivisions |  |
Summary of loans, by loan type |  |
Total loans | 1,989,669 | 1,668,113
Consumer |  |
Summary of loans, by loan type |  |
Total loans | 41,592 | 40,966
Foreign. |  |
Summary of loans, by loan type |  |
Total loans | $ 159,975 | $ 134,797

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