Loans (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) contract	Sep. 30, 2020 USD ($) contract	Sep. 30, 2021 USD ($) contract	Sep. 30, 2020 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	71		100	61
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 2,640		$ 3,984	$ 7,999
Financing Receivable, Troubled Debt Restructuring, Postmodification	2,646		4,001	8,029
Financing Receivable Modifications Recorded Investment During Period	2,639	$ 5,588	3,958	$ 6,895
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	$ 0		$ 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract			3	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default			$ 113	$ 54
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	3		3	5
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 327	3,657	$ 327	$ 3,803
Financing Receivable, Troubled Debt Restructuring, Postmodification	327	3,657	327	3,803
Financing Receivable Modifications Recorded Investment During Period	$ 327	3,658	$ 327	$ 3,804
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	46		54	16
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 1,952		$ 2,367	$ 1,237
Financing Receivable, Troubled Debt Restructuring, Postmodification	1,956		2,376	1,267
Financing Receivable Modifications Recorded Investment During Period	$ 1,955	608	$ 2,366	$ 1,261
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract			3
Financing Receivable, Troubled Debt Restructuring, Subsequent Default			$ 113
Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	5		9	7
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 55		$ 315	$ 123
Financing Receivable, Troubled Debt Restructuring, Postmodification	55		315	$ 123
Financing Receivable Modifications Recorded Investment During Period	$ 55		$ 307
Consumer, indirect
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	9		16	23
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 95		$ 200	$ 235
Financing Receivable, Troubled Debt Restructuring, Postmodification	95		200	$ 235
Financing Receivable Modifications Recorded Investment During Period	$ 95		$ 192
Consumer, direct
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	3		8	5
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 9		$ 48	$ 68
Financing Receivable, Troubled Debt Restructuring, Postmodification	9		48	68
Financing Receivable Modifications Recorded Investment During Period	$ 9		$ 45
Consumer Loan [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable Modifications Recorded Investment During Period		$ 142		$ 279
Commercial real estate, other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	2		3	5
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 14		$ 37	$ 2,533
Financing Receivable, Troubled Debt Restructuring, Postmodification	14		37	$ 2,533
Financing Receivable Modifications Recorded Investment During Period	$ 14		$ 37
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract				1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default				$ 54
Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	1		2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 6		$ 350
Financing Receivable, Troubled Debt Restructuring, Postmodification	6		350
Financing Receivable Modifications Recorded Investment During Period	$ 6		$ 350
Finance Leases Portfolio Segment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	2		5
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 182		$ 340
Financing Receivable, Troubled Debt Restructuring, Postmodification	184		348
Financing Receivable Modifications Recorded Investment During Period	$ 178		$ 334
Originated Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		33
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 6,689
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 6,689
Originated Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		4
Originated Loans | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		10
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 608
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 608
Originated Loans | Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		3
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 68
Financing Receivable, Troubled Debt Restructuring, Postmodification		68
Financing Receivable Modifications Recorded Investment During Period		$ 68		121
Originated Loans | Consumer, indirect
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		11
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 126
Financing Receivable, Troubled Debt Restructuring, Postmodification		126
Financing Receivable Modifications Recorded Investment During Period		$ 126		216
Originated Loans | Consumer, direct
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		2
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 16
Financing Receivable, Troubled Debt Restructuring, Postmodification		16
Financing Receivable Modifications Recorded Investment During Period		$ 16		$ 63
Originated Loans | Consumer Loan [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	12	13	24	28
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 104	$ 142	$ 248	$ 303
Financing Receivable, Troubled Debt Restructuring, Postmodification	104	$ 142	248	303
Financing Receivable Modifications Recorded Investment During Period	$ 104		$ 237
Originated Loans | Commercial real estate, other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		3
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 2,214
Financing Receivable, Troubled Debt Restructuring, Postmodification		2,214
Financing Receivable Modifications Recorded Investment During Period		$ 1,112		$ 1,430