Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Summary of loans, by loan type
Total loans	$ 8,587,025	$ 8,058,961
Commercial, financial and agricultural
Summary of loans, by loan type
Total loans	4,922,980	4,802,622
Real estate - mortgage
Summary of loans, by loan type
Total loans	983,211	938,901
Real estate - construction
Summary of loans, by loan type
Total loans	2,457,144	2,091,622
Consumer
Summary of loans, by loan type
Total loans	48,329	45,121
Foreign
Summary of loans, by loan type
Total loans	$ 175,361	$ 180,695