Loans - Summary of Loans and Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Summary of loans
Gross loans	$ 12,889,500	$ 12,358,017
Unearned income	(4,480)	(6,787)
Loans, net of unearned income	12,885,020	12,351,230
Commercial, financial, agricultural
Summary of loans
Gross loans	1,885,817	1,871,821
Loans, net of unearned income	1,885,817	1,871,821
Lease financing
Summary of loans
Gross loans	95,071	122,807
Loans, net of unearned income	90,591	116,020
Real Estate - Construction
Summary of loans
Gross loans	1,093,653	1,333,397
Loans, net of unearned income	1,093,653	1,333,397
Real Estate - Construction | Residential
Summary of loans
Gross loans	256,655	269,616
Real Estate - Construction | Commercial
Summary of loans
Gross loans	836,998	1,063,781
Real Estate - 1-4 Family Mortgage
Summary of loans
Gross loans	3,488,877	3,439,919
Loans, net of unearned income	3,488,877	3,439,919
Real Estate - 1-4 Family Mortgage | Primary
Summary of loans
Gross loans	2,428,076	2,422,482
Real Estate - 1-4 Family Mortgage | Home equity
Summary of loans
Gross loans	544,158	522,688
Real Estate - 1-4 Family Mortgage | Rental/investment
Summary of loans
Gross loans	402,938	373,755
Real Estate - 1-4 Family Mortgage | Land development
Summary of loans
Gross loans	113,705	120,994
Real Estate - 1-4 Family Mortgage | Land development
Summary of loans
Gross loans	113,705	120,994
Real Estate  - Commercial Mortgage
Summary of loans
Gross loans	6,236,068	5,486,550
Loans, net of unearned income	6,236,068	5,486,550
Real Estate  - Commercial Mortgage | Owner-occupied
Summary of loans
Gross loans	1,894,679	1,648,961
Real Estate  - Commercial Mortgage | Non-owner occupied
Summary of loans
Gross loans	4,226,937	3,733,174
Real Estate  - Commercial Mortgage | Land development
Summary of loans
Gross loans	114,452	104,415
Installment loans to individuals
Summary of loans
Gross loans	90,014	103,523
Loans, net of unearned income	$ 90,014	$ 103,523