Loans (Schedule of Financing Receivable Recorded Investment Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans	$ 1,088,982	$ 918,894
Commercial Real Estate Portfolio Segment [Member]
Loans	667,105	538,888
Commercial Real Estate Portfolio Segment [Member] | Unrated [Member]
Loans	51,503	51,924
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Loans	594,768	466,601
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Loans		250
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans	20,834	20,113
Residential First Mortgages Portfolio Segment [Member]
Loans	171,004	131,401
Residential First Mortgages Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Loans	623	1,948
Residential First Mortgages Portfolio Segment [Member] | Performing Financing Receivable [Member]
Loans	170,381	129,453
Residential Rentals Portfolio Segment [Member]
Loans	101,897	93,157
Residential Rentals Portfolio Segment [Member] | Unrated [Member]
Loans	25,563	21,585
Residential Rentals Portfolio Segment [Member] | Pass [Member]
Loans	74,989	67,926
Residential Rentals Portfolio Segment [Member] | Special Mention [Member]
Loans		845
Residential Rentals Portfolio Segment [Member] | Substandard [Member]
Loans	1,345	2,801
Construction And Land Development Portfolio Segment [Member]
Loans	36,934	36,189
Construction And Land Development Portfolio Segment [Member] | Unrated [Member]
Loans	1,632	4,399
Construction And Land Development Portfolio Segment [Member] | Pass [Member]
Loans	31,525	27,507
Construction And Land Development Portfolio Segment [Member] | Substandard [Member]
Loans	3,777	3,845
Construction And Land Development Portfolio Segment [Member] | Doubtful [Member]
Loans		438
Home Equity And Second Mortgages Portfolio Segment [Member]
Loans	21,399	21,716
Home Equity And Second Mortgages Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Loans	61	48
Home Equity And Second Mortgages Portfolio Segment [Member] | Performing Financing Receivable [Member]
Loans	21,338	21,668
Commercial Portfolio [Member]
Loans	896,157	765,411
Commercial Portfolio [Member] | Unrated [Member]
Loans	101,733	99,263
Commercial Portfolio [Member] | Pass [Member]
Loans	764,793	633,213
Commercial Portfolio [Member] | Special Mention [Member]
Loans		1,095
Commercial Portfolio [Member] | Substandard [Member]
Loans	29,494	30,979
Commercial Portfolio [Member] | Doubtful [Member]
Loans	137	861
Commercial Portfolio Segment [Member]
Loans	50,484	67,246
Commercial Portfolio Segment [Member] | Unrated [Member]
Loans	11,266	11,281
Commercial Portfolio Segment [Member] | Pass [Member]
Loans	36,221	51,569
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans	2,997	4,110
Commercial Portfolio Segment [Member] | Doubtful [Member]
Loans		286
Commercial Equipment Portfolio Segment [Member]
Loans	39,737	29,931
Commercial Equipment Portfolio Segment [Member] | Unrated [Member]
Loans	11,769	10,074
Commercial Equipment Portfolio Segment [Member] | Pass [Member]
Loans	27,290	19,610
Commercial Equipment Portfolio Segment [Member] | Substandard [Member]
Loans	541	110
Commercial Equipment Portfolio Segment [Member] | Doubtful [Member]
Loans	137	137
Consumer Portfolio Segment [Member]
Loans	422	366
Consumer Portfolio Segment [Member] | Performing Financing Receivable [Member]
Loans	$ 422	$ 366