Loans and Leases Nonaccrual (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	$ 120,604	$ 167,960	$ 167,960
Financing Receivable, Nonaccrual, No Allowance	47,159		89,433
Commercial Portfolio Segment [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	72,745	95,197	95,197
Financing Receivable, Nonaccrual, No Allowance	13,853		35,497
Commercial Portfolio Segment [Member] | Commercial non-mortgage
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	49,513	64,073	64,073
Financing Receivable, Nonaccrual, No Allowance	8,386		16,985
Commercial Portfolio Segment [Member] | Asset-based
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	2,375	2,594	2,594
Financing Receivable, Nonaccrual, No Allowance	2,375		0
Commercial Portfolio Segment [Member] | Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	12,695	21,231	21,231
Financing Receivable, Nonaccrual, No Allowance	554		15,529
Commercial Portfolio Segment [Member] | Equipment financing
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	8,162	7,299	7,299
Financing Receivable, Nonaccrual, No Allowance	2,538		2,983
Consumer Portfolio Segment [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	47,859	72,763	72,763
Financing Receivable, Nonaccrual, No Allowance	33,306		53,936
Consumer Portfolio Segment [Member] | Residential
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	21,472	41,081	41,081
Financing Receivable, Nonaccrual, No Allowance	12,680		29,843
Consumer Portfolio Segment [Member] | Home equity
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	25,975	$ 31,030	31,030
Financing Receivable, Nonaccrual, No Allowance	20,620		24,091
Consumer Portfolio Segment [Member] | Other consumer
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	412		652
Financing Receivable, Nonaccrual, No Allowance	$ 6		$ 2