Loans (Schedule of Financing Receivables, Non-Accrual Status) (Details) $ in Thousands	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 11,965	$ 12,787
Number of Loans | loan	13	21
Non-accrual Current Loans	$ 6,257	$ 5,070
Number of Loans | loan	17	18
Total Non-accrual Loans	$ 18,222	$ 17,857
Total Number of Loans | loan	30	39
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 11,428	$ 10,562
Number of Loans | loan	9	11
Non-accrual Current Loans	$ 5,184	$ 1,687
Number of Loans | loan	9	5
Total Non-accrual Loans	$ 16,612	$ 12,249
Total Number of Loans | loan	18	16
Residential first mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 335	$ 0
Number of Loans | loan	2
Non-accrual Current Loans	$ 459	$ 830
Number of Loans | loan	2	3
Total Non-accrual Loans	$ 794	$ 830
Total Number of Loans | loan	4	3
Residential rentals
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 0	$ 0
Non-accrual Current Loans	$ 275	$ 937
Number of Loans | loan	2	5
Total Non-accrual Loans	$ 275	$ 937
Total Number of Loans | loan	2	5
Home equity and second mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 202	$ 177
Number of Loans | loan	2	3
Non-accrual Current Loans	$ 293	$ 271
Number of Loans | loan	1	3
Total Non-accrual Loans	$ 495	$ 448
Total Number of Loans | loan	3	6
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans		$ 1,807
Number of Loans | loan		2
Non-accrual Current Loans		$ 1,320
Number of Loans | loan		1
Total Non-accrual Loans		$ 3,127
Total Number of Loans | loan		3
Commercial equipment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual Delinquent Loans	$ 0	$ 241
Number of Loans | loan		5
Non-accrual Current Loans	$ 46	$ 25
Number of Loans | loan	3	1
Total Non-accrual Loans	$ 46	$ 266
Total Number of Loans | loan	3	6