Loans and Leases Nonaccrual (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	$ 162,676	$ 151,059	$ 151,059
Financing Receivable, Nonaccrual, No Allowance	73,770		54,926
Commercial Portfolio Segment [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	87,590		76,504
Financing Receivable, Nonaccrual, No Allowance	17,524		20,460
Commercial Portfolio Segment [Member] | Commercial non-mortgage
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	67,849	59,369	59,369
Financing Receivable, Nonaccrual, No Allowance	12,136		13,584
Commercial Portfolio Segment [Member] | Asset-based
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	3,760	139	139
Financing Receivable, Nonaccrual, No Allowance	0		0
Commercial Portfolio Segment [Member] | Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	8,799	11,563	11,563
Financing Receivable, Nonaccrual, No Allowance	2,729		4,717
Commercial Portfolio Segment [Member] | 6172 Finance Lessors
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	7,182	5,433	5,433
Financing Receivable, Nonaccrual, No Allowance	2,659		2,159
Consumer Portfolio Segment [Member]
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	75,086		74,555
Financing Receivable, Nonaccrual, No Allowance	56,246		34,466
Consumer Portfolio Segment [Member] | Residential
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	41,554	43,193	43,193
Financing Receivable, Nonaccrual, No Allowance	30,234		19,271
Consumer Portfolio Segment [Member] | Home equity
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	32,853	$ 30,170	30,170
Financing Receivable, Nonaccrual, No Allowance	25,981		15,195
Consumer Portfolio Segment [Member] | Other consumer
Financing Receivable, Nonaccrual [Line Items]
Financing Receivable, Nonaccrual	679		1,192
Financing Receivable, Nonaccrual, No Allowance	$ 31		$ 0