Commitments and Contingencies (ACL on Unfunded Commitments Rollforward) (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Sep. 30, 2020	Sep. 30, 2020	Jan. 01, 2020
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	[1]	$ 2,155	$ 293
Adoption of Topic 326	[1]			$ 1,483
Provision		25	404
Ending balance		2,180	2,180
Commercial Real Estate
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		887	136
Adoption of Topic 326	[1]			817
Provision		(30)	(96)
Ending balance		857	857
Commercial & Industrial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		1,207	144
Adoption of Topic 326	[1]			626
Provision		60	497
Ending balance		1,267	1,267
Total Commercial
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		2,094	280
Adoption of Topic 326	[1]			1,443
Provision		30	401
Ending balance		2,124	2,124
Residential Real Estate
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		42	6
Adoption of Topic 326	[1]			34
Provision		(5)	(3)
Ending balance		37	37
Home Equity
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		0	0
Adoption of Topic 326	[1]			0
Provision		0	0
Ending balance		0	0
Other
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		19	7
Adoption of Topic 326	[1]			6
Provision		0	6
Ending balance		19	19
Total Consumer
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance		19	7
Adoption of Topic 326	[1]			$ 6
Provision		0	6
Ending balance		$ 19	$ 19

[1] Adoption of the CECL accounting standard effective January 1, 2020.