Loans and Leases and the Allowance for Credit Losses - Schedule of Loan and Lease Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loan and lease portfolio
Loans and Leases	$ 13,646,420	$ 12,259,076
Commercial
Loan and lease portfolio
Loans and Leases	5,464,503	4,966,192
Commercial | Commercial and Industrial
Loan and lease portfolio
Loans and Leases	1,389,066	1,361,921
Commercial | Paycheck Protection Program
Loan and lease portfolio
Loans and Leases	19,579	126,779
Commercial | Commercial Mortgage
Loan and lease portfolio
Loans and Leases	3,725,542	3,152,130
Commercial | Construction
Loan and lease portfolio
Loans and Leases	260,825	220,254
Commercial | Lease Financing
Loan and lease portfolio
Loans and Leases	69,491	105,108
Consumer
Loan and lease portfolio
Loans and Leases	8,181,917	7,292,884
Consumer | Other
Loan and lease portfolio
Loans and Leases	432,499	410,129
Consumer | Residential Mortgage
Loan and lease portfolio
Loans and Leases	4,653,072	4,309,602
Consumer | Home Equity
Loan and lease portfolio
Loans and Leases	2,225,950	1,836,588
Consumer | Automobile
Loan and lease portfolio
Loans and Leases	$ 870,396	$ 736,565