Loans - Summary of loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Summary of Loans
Total loans	$ 46,766,732	$ 33,902,927
Less allowance for credit losses	(623,690)	(465,280)	$ (469,654)	$ (456,573)
Loans, net	46,143,042	33,437,647
Deferred costs	89,100	86,700
Unamortized Discounts	457,100	36,900
Accrued interest receivable (AIR)	$ 182,500	$ 133,000
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Other Assets.	Other Assets.
Construction and land development
Summary of Loans
Total loans	$ 3,497,909	$ 2,184,327
Consumer Owner-Occupied
Summary of Loans
Total loans	8,168,477	7,144,885
Home equity loans
Summary of Loans
Total loans	1,670,475	1,570,084
Commercial and industrial
Summary of Loans
Total loans	8,106,484	6,222,876
Other income producing property
Summary of Loans
Total loans	1,286,033	607,750
Consumer
Summary of Loans
Total loans	1,075,872	1,062,599
Other loans
Summary of Loans
Total loans	8,280	10,298
Commercial loans
Summary of Loans
Total loans	35,480,112	23,705,601
Commercial loans | Construction and land development
Summary of Loans
Total loans	3,154,389	1,798,096
Commercial loans | Commercial non-owner occupied
Summary of Loans
Total loans	15,536,086	9,383,732
Commercial loans | Consumer Owner-Occupied
Summary of Loans
Total loans	70,014	66,910
Commercial loans | Commercial and industrial
Summary of Loans
Total loans	8,106,484	6,222,876
Commercial loans | Other income producing property
Summary of Loans
Total loans	1,187,743	507,313
Commercial loans | Other loans
Summary of Loans
Total loans	8,280	10,298
Consumer loans
Summary of Loans
Total loans	11,286,620	10,197,326
Consumer loans | Construction and land development
Summary of Loans
Total loans	343,520	386,231
Consumer loans | Consumer Owner-Occupied
Summary of Loans
Total loans	8,098,463	7,077,975
Consumer loans | Home equity loans
Summary of Loans
Total loans	1,670,475	1,570,084
Consumer loans | Other income producing property
Summary of Loans
Total loans	98,290	100,437
Consumer loans | Consumer
Summary of Loans
Total loans	$ 1,075,872	$ 1,062,599