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		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			$ 235,019
Provision for credit loss expense	$ 15,180	$ 12,148	53,922	$ 33,453
Ending balance	258,006		258,006
Loans, Excluding Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	253,537	230,389	235,019	225,231
Provision for credit loss expense	15,180	12,148	53,922	33,453
Charge-offs	(11,891)	(10,662)	(34,912)	(29,824)
Recoveries	1,180	1,348	3,977	4,363
Net (charge-offs) recoveries	(10,711)	(9,314)	(30,935)	(25,461)
Ending balance	258,006	233,223	258,006	233,223
Loans, Excluding Acquired Loans | Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	37,198	43,550	41,587	36,470
Provision for credit loss expense	7,196	8,088	13,841	26,107
Charge-offs	(8,079)	(8,235)	(20,579)	(20,071)
Recoveries	505	439	1,971	1,336
Net (charge-offs) recoveries	(7,574)	(7,796)	(18,608)	(18,735)
Ending balance	36,820	43,842	36,820	43,842
Loans, Excluding Acquired Loans | Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	203,985	175,176	181,962	177,177
Provision for credit loss expense	5,517	1,598	33,229	1,770
Charge-offs	(1,350)	(159)	(7,225)	(3,139)
Recoveries	115	403	301	1,210
Net (charge-offs) recoveries	(1,235)	244	(6,924)	(1,929)
Ending balance	208,267	177,018	208,267	177,018
Loans, Excluding Acquired Loans | Consumer: | Credit Card
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,087	5,765	6,007	5,868
Provision for credit loss expense	1,499	1,755	4,196	4,247
Charge-offs	(1,862)	(1,744)	(5,024)	(4,808)
Recoveries	257	231	802	700
Net (charge-offs) recoveries	(1,605)	(1,513)	(4,222)	(4,108)
Ending balance	5,981	6,007	5,981	6,007
Loans, Excluding Acquired Loans | Consumer: | Other Consumer and Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,267	5,898	5,463	5,716
Provision for credit loss expense	968	707	2,656	1,329
Charge-offs	(600)	(524)	(2,084)	(1,806)
Recoveries	303	275	903	1,117
Net (charge-offs) recoveries	(297)	(249)	(1,181)	(689)
Ending balance	$ 6,938	$ 6,356	$ 6,938	$ 6,356