Loans (Schedule of Financing Receivables, Non-Accrual Status) (Details) $ in Thousands	Jun. 30, 2017 USD ($) loan	Dec. 31, 2016 USD ($) loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 3,782	$ 7,705
Number of loans, 90 or greater days delinquent | loan	22	27
Non-accrual performing loans | $	$ 660	$ 669
Number of loans, non-accrual performing loans | loan	2	2
Total non-accrual loans | $	$ 4,442	$ 8,374
Total number of loans | loan	24	29
Residential Rentals Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 332	$ 577
Number of loans, 90 or greater days delinquent | loan	3	4
Total non-accrual loans | $	$ 332	$ 577
Total number of loans | loan	3	4
Construction And Land Development Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 252	$ 3,048
Number of loans, 90 or greater days delinquent | loan	1	2
Total non-accrual loans | $	$ 252	$ 3,048
Total number of loans | loan	1	2
Real Estate Portfolio Segment [Member] | Residential First Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 288	$ 623
Number of loans, 90 or greater days delinquent | loan	3	4
Total non-accrual loans | $	$ 288	$ 623
Total number of loans | loan	3	4
Real Estate Portfolio Segment [Member] | Home Equity And Second Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 52	$ 61
Number of loans, 90 or greater days delinquent | loan	2	2
Total non-accrual loans | $	$ 52	$ 61
Total number of loans | loan	2	2
Commercial Portfolio Segment [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 2,015	$ 2,371
Number of loans, 90 or greater days delinquent | loan	7	7
Total non-accrual loans | $	$ 2,015	$ 2,371
Total number of loans | loan	7	7
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 376	$ 375
Number of loans, 90 or greater days delinquent | loan	3	3
Non-accrual performing loans | $	$ 660	$ 669
Number of loans, non-accrual performing loans | loan	2	2
Total non-accrual loans | $	$ 1,036	$ 1,044
Total number of loans | loan	5	5
Commercial Portfolio Segment [Member] | Commercial Equipment Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or greater days delinquent | $	$ 467	$ 650
Number of loans, 90 or greater days delinquent | loan	3	5
Total non-accrual loans | $	$ 467	$ 650
Total number of loans | loan	3	5