Loans and Leases and the Allowance for Credit Losses - Schedule of Activity in Allowance by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Allowance for Credit Losses:
Balance at Beginning of Period	$ 147,664	$ 143,577	$ 146,403	$ 144,439
Loans and Leases Charged-Off	(4,830)	(3,511)	(8,585)	(7,820)
Recoveries on Loans and Leases Previously Charged-Off	1,437	2,134	2,911	3,775
Net Loans and Leases Charged-Off	(3,393)	(1,377)	(5,674)	(4,045)
Provision for Credit Losses	3,206	3,167	6,748	4,973
Balance at End of Period	147,477	145,367	147,477	145,367
Commercial
Allowance for Credit Losses:
Balance at Beginning of Period	75,087	58,771	74,074	63,900
Loans and Leases Charged-Off	(875)	(203)	(1,235)	(464)
Recoveries on Loans and Leases Previously Charged-Off	263	103	379	153
Net Loans and Leases Charged-Off	(612)	(100)	(856)	(311)
Provision for Credit Losses	5,610	5,270	6,867	352
Balance at End of Period	80,085	63,941	80,085	63,941
Consumer
Allowance for Credit Losses:
Balance at Beginning of Period	72,577	84,806	72,329	80,539
Loans and Leases Charged-Off	(3,955)	(3,308)	(7,350)	(7,356)
Recoveries on Loans and Leases Previously Charged-Off	1,174	2,031	2,532	3,622
Net Loans and Leases Charged-Off	(2,781)	(1,277)	(4,818)	(3,734)
Provision for Credit Losses	(2,404)	(2,103)	(119)	4,621
Balance at End of Period	$ 67,392	$ 81,426	$ 67,392	$ 81,426