Loans and Leases and the Allowance for Credit Losses - Schedule of Activity in Allowance by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for Credit Losses:
Balance at Beginning of Period	$ 144,439	$ 157,821	$ 216,252
Loans and Leases Charged-Off	(14,967)	(13,342)	(17,319)
Recoveries on Loans and Leases Previously Charged-Off	7,149	8,223	11,354
Net Loans and Leases Recovered (Charged-Off)	(7,818)	(5,119)	(5,965)
Provision for Credit Losses	9,782	(8,263)	(52,466)
Balance at End of Period	146,403	144,439	157,821
Commercial
Allowance for Credit Losses:
Balance at Beginning of Period	63,900	64,950	84,847
Loans and Leases Charged-Off	(987)	(925)	(1,117)
Recoveries on Loans and Leases Previously Charged-Off	350	552	506
Net Loans and Leases Recovered (Charged-Off)	(637)	(373)	(611)
Provision for Credit Losses	10,811	(677)	(19,286)
Balance at End of Period	74,074	63,900	64,950
Consumer
Allowance for Credit Losses:
Balance at Beginning of Period	80,539	92,871	131,405
Loans and Leases Charged-Off	(13,980)	(12,417)	(16,202)
Recoveries on Loans and Leases Previously Charged-Off	6,799	7,671	10,848
Net Loans and Leases Recovered (Charged-Off)	(7,181)	(4,746)	(5,354)
Provision for Credit Losses	(1,029)	(7,586)	(33,180)
Balance at End of Period	$ 72,329	$ 80,539	$ 92,871