Loans and Allowance for Credit Losses - Schedule of Activity in the Allowance for Loan Losses, by Portfolio Segment, for the Current Year (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			$ 235,019
Provision for credit loss expense	$ 11,945	$ 11,099	38,742	$ 21,305
Ending balance	253,537		253,537
Loans, Excluding Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	252,168	227,367	235,019	225,231
Provision for credit loss expense	11,945	11,099	38,742	21,305
Charge-offs	(11,760)	(9,334)	(23,021)	(19,162)
Recoveries	1,184	1,257	2,797	3,015
Net (charge-offs) recoveries	(10,576)	(8,077)	(20,224)	(16,147)
Ending balance	253,537	230,389	253,537	230,389
Loans, Excluding Acquired Loans | Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	39,913	35,191	41,587	36,470
Provision for credit loss expense	5,073	15,147	6,645	18,019
Charge-offs	(8,257)	(7,243)	(12,500)	(11,836)
Recoveries	469	455	1,466	897
Net (charge-offs) recoveries	(7,788)	(6,788)	(11,034)	(10,939)
Ending balance	37,198	43,550	37,198	43,550
Loans, Excluding Acquired Loans | Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	200,079	180,414	181,962	177,177
Provision for credit loss expense	5,269	(5,187)	27,712	172
Charge-offs	(1,450)	(123)	(5,875)	(2,980)
Recoveries	87	72	186	807
Net (charge-offs) recoveries	(1,363)	(51)	(5,689)	(2,173)
Ending balance	203,985	175,176	203,985	175,176
Loans, Excluding Acquired Loans | Consumer: | Credit Card
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,117	5,768	6,007	5,868
Provision for credit loss expense	1,338	1,194	2,697	2,492
Charge-offs	(1,702)	(1,418)	(3,162)	(3,064)
Recoveries	334	221	545	469
Net (charge-offs) recoveries	(1,368)	(1,197)	(2,617)	(2,595)
Ending balance	6,087	5,765	6,087	5,765
Loans, Excluding Acquired Loans | Consumer: | Other Consumer and Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,059	5,994	5,463	5,716
Provision for credit loss expense	265	(55)	1,688	622
Charge-offs	(351)	(550)	(1,484)	(1,282)
Recoveries	294	509	600	842
Net (charge-offs) recoveries	(57)	(41)	(884)	(440)
Ending balance	$ 6,267	$ 5,898	$ 6,267	$ 5,898