Loans and Leases (Details 6)	12 Months Ended
	Dec. 31, 2020 USD ($) Contract contract	Dec. 31, 2019 USD ($) Contract contract	Dec. 31, 2018 USD ($) Contract contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	71	51	60
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 80,190,000	$ 27,646,000	$ 101,878,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 37,441,000	$ 27,663,000	$ 90,373,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Contract	2	5	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 504,000		$ 0
Consumer Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | Contract	3		3
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 212,000		$ 673,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 212,000		$ 673,000
Asset Based [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	8	5	4
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 17,008,000	$ 3,082,000	$ 28,947,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,741,000	$ 3,082,000	$ 33,947,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Contract	0	0	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 0	$ 0
Venture Capital Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0
Venture Capital Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	2	14	14
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 2,047,000	$ 19,017,000	$ 37,416,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 2,047,000	$ 19,155,000	$ 36,919,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Contract			0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default			$ 0
Other Commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	1	4
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 92,000	$ 154,000
Other Commercial [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	37	20	19
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 41,906,000	$ 3,835,000	$ 14,399,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 27,403,000	$ 3,835,000	$ 14,027,000
Commercial Real Estate [Member] | Mortgages [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	12	3	10
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 17,201,000	$ 121,000	$ 17,181,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 4,222,000	$ 0	$ 2,604,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	1	0	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 412,000	$ 0	$ 0
Residential Real Estate [Member] | Mortgages [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	9	9	10
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 1,816,000	$ 1,591,000	$ 3,262,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,816,000	$ 1,591,000	$ 2,203,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 254,000	$ 0
Other Commercial [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		$ 408,000
Commercial Portfolio Segment [Member] | Other Commercial [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Contract			0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default			$ 0
Consumer Portfolio Segment [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Contract	0		0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0		$ 0
Finance Receivable, Modification of Modified Loan [Member] | Asset Based [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Premodification	27,300,000
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 32,300,000