Loans (Schedule of Financing Receivables, Non-Accrual Status) (Details) $ in Thousands	Jun. 30, 2019 USD ($) Loan	Dec. 31, 2018 USD ($) Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 10,600	$ 11,152
Number of loans, non- accrual delinquent loans | Loan	22	23
Non-accrual current loans | $	$ 2,688	$ 8,130
Number of loans, non-accrual current loans | Loan	13	15
Total non-accrual loans | $	$ 13,288	$ 19,282
Total number of loans | Loan	35	38
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 8,938	$ 8,474
Number of loans, non- accrual delinquent loans | Loan	9	11
Non-accrual current loans | $	$ 852	$ 6,158
Number of loans, non-accrual current loans | Loan	4	6
Total non-accrual loans | $	$ 9,790	$ 14,632
Total number of loans | Loan	13	17
Residential First Mortgages Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 146	$ 146
Number of loans, non- accrual delinquent loans | Loan	1	1
Non-accrual current loans | $	$ 846	$ 1,228
Number of loans, non-accrual current loans | Loan	3	4
Total non-accrual loans | $	$ 992	$ 1,374
Total number of loans | Loan	4	5
Residential Rentals Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 0	$ 260
Number of loans, non- accrual delinquent loans | Loan		2
Non-accrual current loans | $	$ 971	$ 703
Number of loans, non-accrual current loans | Loan	5	3
Total non-accrual loans | $	$ 971	$ 963
Total number of loans | Loan	5	5
Home Equity And Second Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 416	$ 147
Number of loans, non- accrual delinquent loans | Loan	5	2
Total non-accrual loans | $	$ 416	$ 147
Total number of loans | Loan	5	2
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 819	$ 866
Number of loans, non- accrual delinquent loans | Loan	2	2
Total non-accrual loans | $	$ 819	$ 866
Total number of loans | Loan	2	2
Commercial Equipment Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non- accrual delinquent loans | $	$ 281	$ 1,259
Number of loans, non- accrual delinquent loans | Loan	5	5
Non-accrual current loans | $	$ 19	$ 41
Number of loans, non-accrual current loans | Loan	1	2
Total non-accrual loans | $	$ 300	$ 1,300
Total number of loans | Loan	6	7