Loans (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) contract	Jun. 30, 2020 USD ($) contract	Jun. 30, 2021 USD ($) contract	Jun. 30, 2020 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	25		35	30
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 853		$ 1,457	$ 1,400
Financing Receivable, Troubled Debt Restructuring, Postmodification	861		1,469	1,430
Financing Receivable Modifications Recorded Investment During Period	859		1,459	$ 1,417
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	$ 0		$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract				1
Financing Receivable, Troubled Debt Restructuring, Premodification				$ 145
Financing Receivable, Troubled Debt Restructuring, Postmodification				145
Financing Receivable, Troubled Debt Restructuring		$ 145		$ 145
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	5		8	8
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 245		$ 415	$ 756
Financing Receivable, Troubled Debt Restructuring, Postmodification	245		419	786
Financing Receivable Modifications Recorded Investment During Period	$ 245		$ 416	$ 783
Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	4		4	4
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 260		$ 260	$ 55
Financing Receivable, Troubled Debt Restructuring, Postmodification	260		260	55
Financing Receivable Modifications Recorded Investment During Period	$ 258		$ 258	$ 53
Consumer, indirect
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	6		10	13
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 62		$ 140	$ 128
Financing Receivable, Troubled Debt Restructuring, Postmodification	62		140	128
Financing Receivable Modifications Recorded Investment During Period	$ 62		$ 135	$ 122
Consumer, direct
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	5		7	3
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 38		$ 50	$ 51
Financing Receivable, Troubled Debt Restructuring, Postmodification	38		50	51
Financing Receivable Modifications Recorded Investment During Period	$ 38		$ 50	$ 49
Commercial real estate, other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	1		1	1
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 23		$ 23	$ 265
Financing Receivable, Troubled Debt Restructuring, Postmodification	23		23	265
Financing Receivable, Troubled Debt Restructuring	23	$ 265	$ 23	$ 265
Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract			1
Financing Receivable, Troubled Debt Restructuring, Premodification			$ 344
Financing Receivable, Troubled Debt Restructuring, Postmodification			344
Financing Receivable, Troubled Debt Restructuring	$ 344		$ 344
Finance Leases Portfolio Segment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	4		4
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 225		$ 225
Financing Receivable, Troubled Debt Restructuring, Postmodification	233		233
Financing Receivable, Troubled Debt Restructuring	$ 233		$ 233
Originated Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		15
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 379
Financing Receivable, Troubled Debt Restructuring, Postmodification		379
Financing Receivable Modifications Recorded Investment During Period		$ 379
Originated Loans | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		5
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 303
Financing Receivable, Troubled Debt Restructuring, Postmodification		303
Financing Receivable Modifications Recorded Investment During Period		$ 303
Originated Loans | Home equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		2
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 14
Financing Receivable, Troubled Debt Restructuring, Postmodification		14
Financing Receivable Modifications Recorded Investment During Period		$ 14
Originated Loans | Consumer, indirect
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract		8
Financing Receivable, Troubled Debt Restructuring, Premodification		$ 62
Financing Receivable, Troubled Debt Restructuring, Postmodification		62
Financing Receivable Modifications Recorded Investment During Period		$ 62
Originated Loans | Consumer Loan [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract	11		17	16
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 100		$ 190	$ 179
Financing Receivable, Troubled Debt Restructuring, Postmodification	100		190	179
Financing Receivable Modifications Recorded Investment During Period	$ 100		$ 185	$ 171