Loans (Troubled Debt Restructurings Subsequent Default) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring	5	0	17	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		$ 0		$ 0
Residential Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring	4	0	10	0
Home Equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring	1	0	4	0
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring	0	0	0	0
Payment Default [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring | loan	2	0	2	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 950		$ 950
Payment Default [Member] | Residential Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring | loan	1	0	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 903	$ 0	$ 903	$ 0
Payment Default [Member] | Home Equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring | loan	1	0	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 47	$ 0	$ 47	$ 0
Payment Default [Member] | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified as a troubled debt restructuring | loan	0	0	0	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 0	$ 0	$ 0