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
	Mar. 31, 2026	Mar. 31, 2025
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 224,377
Provision for credit loss expense	14,622	$ 26,797
Ending balance	229,908
Loans, Excluding Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	224,377	235,019
Provision for credit loss expense	14,622	26,797
Charge-offs	(10,562)	(11,261)
Recoveries	1,471	1,613
Net (charge-offs) recoveries	(9,091)	(9,648)
Ending balance	229,908	252,168
Loans, Excluding Acquired Loans | Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	27,998	41,587
Provision for credit loss expense	3,240	1,572
Charge-offs	(1,666)	(4,243)
Recoveries	253	997
Net (charge-offs) recoveries	(1,413)	(3,246)
Ending balance	29,825	39,913
Loans, Excluding Acquired Loans | Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	183,677	181,962
Provision for credit loss expense	10,669	22,443
Charge-offs	(6,629)	(4,425)
Recoveries	449	99
Net (charge-offs) recoveries	(6,180)	(4,326)
Ending balance	188,166	200,079
Loans, Excluding Acquired Loans | Consumer | Credit Card
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,991	6,007
Provision for credit loss expense	924	1,359
Charge-offs	(1,677)	(1,460)
Recoveries	468	211
Net (charge-offs) recoveries	(1,209)	(1,249)
Ending balance	5,706	6,117
Loans, Excluding Acquired Loans | Consumer | Other Consumer and Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,711	5,463
Provision for credit loss expense	(211)	1,423
Charge-offs	(590)	(1,133)
Recoveries	301	306
Net (charge-offs) recoveries	(289)	(827)
Ending balance	$ 6,211	$ 6,059