Loans and Allowance for Credit Losses - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 371,337	$ 313,841	$ 353,055	$ 300,665
Loans charged-off to the allowance for credit losses	28,802	18,885	49,634	32,907
Recovery of previously charged-off loans	5,907	9,113	10,524	15,845
Provision for Loan and Lease Losses	33,159	33,390	67,656	53,856
Ending Balance	381,601	337,459	381,601	337,459
Commercial real estate - owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	29,690	23,598	28,690	26,617
Loans charged-off to the allowance for credit losses	8,810	0	8,904	0
Recovery of previously charged-off loans	125	6	142	14
Provision for Loan and Lease Losses	8,842	2,893	9,919	(134)
Ending Balance	29,847	26,497	29,847	26,497
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	151,172	153,629	148,212	144,353
Loans charged-off to the allowance for credit losses	15,961	14,179	30,769	24,828
Recovery of previously charged-off loans	3,927	4,417	6,749	8,128
Provision for Loan and Lease Losses	14,876	4,551	29,822	20,765
Ending Balance	154,014	148,418	154,014	148,418
Consumer real estate – mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	75,814	39,160	71,354	36,536
Loans charged-off to the allowance for credit losses	39	300	662	430
Recovery of previously charged-off loans	437	944	681	1,615
Provision for Loan and Lease Losses	4,035	19,570	8,874	21,653
Ending Balance	80,247	59,374	80,247	59,374
Construction and land development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	33,734	37,599	39,142	36,114
Loans charged-off to the allowance for credit losses	0	0	0	0
Recovery of previously charged-off loans	2	30	9	251
Provision for Loan and Lease Losses	(3,701)	1,226	(9,116)	2,490
Ending Balance	30,035	38,855	30,035	38,855
Consumer and other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,346	17,941	7,970	16,566
Loans charged-off to the allowance for credit losses	2,911	4,406	6,218	7,649
Recovery of previously charged-off loans	1,402	2,557	2,915	4,648
Provision for Loan and Lease Losses	1,657	(6,885)	3,827	(4,358)
Ending Balance	8,494	9,207	8,494	9,207
Commercial real estate - non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	72,581	41,914	57,687	40,479
Loans charged-off to the allowance for credit losses	1,081	0	3,081	0
Recovery of previously charged-off loans	14	1,159	28	1,189
Provision for Loan and Lease Losses	7,450	12,035	24,330	13,440
Ending Balance	$ 78,964	$ 55,108	$ 78,964	$ 55,108

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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