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Loans - Aging analysis of past due loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans and Allowance for Loan Losses
Non-Accruing	$ 207,296	$ 170,222
Total loans	33,902,927	32,388,489
30 days past due
Loans and Allowance for Loan Losses
Total loans	56,417	60,085
60 days past due
Loans and Allowance for Loan Losses
Total loans	16,807	18,276
90 days past due
Loans and Allowance for Loan Losses
Total loans	3,293	12,479
Total Past Due
Loans and Allowance for Loan Losses
Total loans	76,517	90,840
Current
Loans and Allowance for Loan Losses
Total loans	33,619,114	32,127,427
Construction and land development
Loans and Allowance for Loan Losses
Non-Accruing	1,458	1,433
Total loans	2,184,327	2,923,514
Construction and land development | 30 days past due
Loans and Allowance for Loan Losses
Total loans	16	624
Construction and land development | Total Past Due
Loans and Allowance for Loan Losses
Total loans	16	624
Construction and land development | Current
Loans and Allowance for Loan Losses
Total loans	2,182,853	2,921,457
Consumer Owner-Occupied
Loans and Allowance for Loan Losses
Non-Accruing	43,054	25,271
Total loans	7,144,885	6,595,005
Consumer Owner-Occupied | 30 days past due
Loans and Allowance for Loan Losses
Total loans	6,536	7,903
Consumer Owner-Occupied | 60 days past due
Loans and Allowance for Loan Losses
Total loans	444	552
Consumer Owner-Occupied | 90 days past due
Loans and Allowance for Loan Losses
Total loans		920
Consumer Owner-Occupied | Total Past Due
Loans and Allowance for Loan Losses
Total loans	6,980	9,375
Consumer Owner-Occupied | Current
Loans and Allowance for Loan Losses
Total loans	7,094,851	6,560,359
Home equity loans
Loans and Allowance for Loan Losses
Non-Accruing	10,023	4,932
Total loans	1,570,084	1,398,445
Home equity loans | 30 days past due
Loans and Allowance for Loan Losses
Total loans	4,717	6,500
Home equity loans | 60 days past due
Loans and Allowance for Loan Losses
Total loans	1,511	1,326
Home equity loans | 90 days past due
Loans and Allowance for Loan Losses
Total loans	1
Home equity loans | Total Past Due
Loans and Allowance for Loan Losses
Total loans	6,229	7,826
Home equity loans | Current
Loans and Allowance for Loan Losses
Total loans	1,553,832	1,385,687
Commercial and industrial
Loans and Allowance for Loan Losses
Non-Accruing	92,020	63,531
Total loans	6,222,876	5,504,539
Commercial and industrial | 30 days past due
Loans and Allowance for Loan Losses
Total loans	28,427	25,231
Commercial and industrial | 60 days past due
Loans and Allowance for Loan Losses
Total loans	7,700	7,194
Commercial and industrial | 90 days past due
Loans and Allowance for Loan Losses
Total loans	3,163	9,193
Commercial and industrial | Total Past Due
Loans and Allowance for Loan Losses
Total loans	39,290	41,618
Commercial and industrial | Current
Loans and Allowance for Loan Losses
Total loans	6,091,566	5,399,390
Other income producing property
Loans and Allowance for Loan Losses
Non-Accruing	2,198	3,202
Total loans	607,750	656,334
Other income producing property | 30 days past due
Loans and Allowance for Loan Losses
Total loans	237	569
Other income producing property | 60 days past due
Loans and Allowance for Loan Losses
Total loans	116	570
Other income producing property | 90 days past due
Loans and Allowance for Loan Losses
Total loans	37
Other income producing property | Total Past Due
Loans and Allowance for Loan Losses
Total loans	390	1,139
Other income producing property | Current
Loans and Allowance for Loan Losses
Total loans	605,162	651,993
Consumer
Loans and Allowance for Loan Losses
Non-Accruing	5,356	5,657
Total loans	1,062,599	1,233,650
Consumer | 30 days past due
Loans and Allowance for Loan Losses
Total loans	7,023	13,212
Consumer | 60 days past due
Loans and Allowance for Loan Losses
Total loans	3,444	7,370
Consumer | Total Past Due
Loans and Allowance for Loan Losses
Total loans	10,467	20,582
Consumer | Current
Loans and Allowance for Loan Losses
Total loans	1,046,776	1,207,411
Other loans
Loans and Allowance for Loan Losses
Total loans	10,298	7,697
Other loans | Current
Loans and Allowance for Loan Losses
Total loans	10,298	7,697
Commercial loans
Loans and Allowance for Loan Losses
Total loans	23,705,601	22,391,162
Commercial loans | Construction and land development
Loans and Allowance for Loan Losses
Total loans	1,798,096	2,207,965
Commercial loans | Commercial non-owner occupied
Loans and Allowance for Loan Losses
Non-Accruing	17,505	21,309
Total loans	9,383,732	8,571,634
Commercial loans | Commercial non-owner occupied | 30 days past due
Loans and Allowance for Loan Losses
Total loans	2,253	2,194
Commercial loans | Commercial non-owner occupied | 60 days past due
Loans and Allowance for Loan Losses
Total loans	748	123
Commercial loans | Commercial non-owner occupied | 90 days past due
Loans and Allowance for Loan Losses
Total loans		1,378
Commercial loans | Commercial non-owner occupied | Total Past Due
Loans and Allowance for Loan Losses
Total loans	3,001	3,695
Commercial loans | Commercial non-owner occupied | Current
Loans and Allowance for Loan Losses
Total loans	9,363,226	8,546,630
Commercial loans | Commercial owner-occupied
Loans and Allowance for Loan Losses
Non-Accruing	35,682	44,887
Total loans	5,716,376	5,497,671
Commercial loans | Commercial owner-occupied | 30 days past due
Loans and Allowance for Loan Losses
Total loans	7,208	3,852
Commercial loans | Commercial owner-occupied | 60 days past due
Loans and Allowance for Loan Losses
Total loans	2,844	1,141
Commercial loans | Commercial owner-occupied | 90 days past due
Loans and Allowance for Loan Losses
Total loans	92	988
Commercial loans | Commercial owner-occupied | Total Past Due
Loans and Allowance for Loan Losses
Total loans	10,144	5,981
Commercial loans | Commercial owner-occupied | Current
Loans and Allowance for Loan Losses
Total loans	5,670,550	5,446,803
Commercial loans | Consumer Owner-Occupied
Loans and Allowance for Loan Losses
Total loans	66,910	57,443
Commercial loans | Commercial and industrial
Loans and Allowance for Loan Losses
Total loans	6,222,876	5,504,539
Commercial loans | Other income producing property
Loans and Allowance for Loan Losses
Total loans	507,313	544,213
Commercial loans | Other loans
Loans and Allowance for Loan Losses
Total loans	$ 10,298	$ 7,697

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