Loans and Leases and the Allowance for Credit Losses - Schedule of Activity in Allowance by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Allowance for Credit Losses:
Balance at Beginning of Period	$ 148,528	$ 146,403	$ 146,403
Loans and Leases Charged-Off	(5,709)	(3,755)	(19,136)
Recoveries on Loans and Leases Previously Charged-Off	1,306	1,474
Net Loans and Leases Charged-Off	(4,403)	(2,281)
Provision for Credit Losses	3,582	3,542
Balance at End of Period	147,707	147,664	148,528
Commercial
Allowance for Credit Losses:
Balance at Beginning of Period	83,900	74,074	74,074
Loans and Leases Charged-Off	(1,399)	(360)	(2,609)
Recoveries on Loans and Leases Previously Charged-Off	77	116
Net Loans and Leases Charged-Off	(1,322)	(244)
Provision for Credit Losses	(1,950)	1,257
Balance at End of Period	80,628	75,087	83,900
Consumer
Allowance for Credit Losses:
Balance at Beginning of Period	64,628	72,329	72,329
Loans and Leases Charged-Off	(4,310)	(3,395)	(16,527)
Recoveries on Loans and Leases Previously Charged-Off	1,229	1,358
Net Loans and Leases Charged-Off	(3,081)	(2,037)
Provision for Credit Losses	5,532	2,285
Balance at End of Period	$ 67,079	$ 72,577	$ 64,628