Loans (Schedule of Financing Receivable Recorded Investment Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Loans	$ 1,363,176	$ 1,346,922	$ 1,279,655
Unrated [Member]
Loans	332,345	333,349
Pass [Member]
Loans	1,006,554	981,347
Substandard [Member]
Loans	24,277	32,226
Total Commercial Portfolios [Member]
Loans	1,168,926	1,153,901
Total Commercial Portfolios [Member] | Unrated [Member]
Loans	184,268	186,460
Total Commercial Portfolios [Member] | Pass [Member]
Loans	961,603	936,906
Total Commercial Portfolios [Member] | Substandard [Member]
Loans	23,055	30,535
Commercial Real Estate Portfolio Segment [Member]
Loans	891,165	878,016	817,576
Commercial Real Estate Portfolio Segment [Member] | Unrated [Member]
Loans	109,399	112,280
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Loans	762,790	741,037
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans	18,976	24,699
Construction And Land Development Portfolio Segment [Member]
Loans	32,798	29,705	28,226
Construction And Land Development Portfolio Segment [Member] | Unrated [Member]
Loans	1,616	2,172
Construction And Land Development Portfolio Segment [Member] | Pass [Member]
Loans	31,182	26,805
Construction And Land Development Portfolio Segment [Member] | Substandard [Member]
Loans		728
Residential Rentals Portfolio Segment [Member]
Loans	124,518	124,298	129,026
Residential Rentals Portfolio Segment [Member] | Unrated [Member]
Loans	37,865	37,478
Residential Rentals Portfolio Segment [Member] | Pass [Member]
Loans	85,407	85,551
Residential Rentals Portfolio Segment [Member] | Substandard [Member]
Loans	1,246	1,269
Commercial Portfolio Segment [Member]
Loans	70,725	71,680	52,198
Commercial Portfolio Segment [Member] | Unrated [Member]
Loans	19,657	19,157
Commercial Portfolio Segment [Member] | Pass [Member]
Loans	48,409	49,828
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans	2,659	2,695
Commercial Equipment Portfolio Segment [Member]
Loans	49,720	50,202	45,905
Commercial Equipment Portfolio Segment [Member] | Unrated [Member]
Loans	15,731	15,373
Commercial Equipment Portfolio Segment [Member] | Pass [Member]
Loans	33,815	33,685
Commercial Equipment Portfolio Segment [Member] | Substandard [Member]
Loans	174	1,144
Consumer Portfolio Segment [Member]
Loans	851	751	853
Consumer Portfolio Segment [Member] | Performing Financing Receivable [Member]
Loans	851	751
Residential First Mortgages Portfolio Segment [Member]
Loans	156,653	156,709	166,390
Residential First Mortgages Portfolio Segment [Member] | Performing Financing Receivable [Member]
Loans	156,504	156,563
Residential First Mortgages Portfolio Segment [Member] | Nonperforming Financing Receivable [Member]
Loans	149	146
Home Equity And Second Mortgage Loans [Member]
Loans	36,746	35,561	$ 39,481
Home Equity And Second Mortgage Loans [Member] | Performing Financing Receivable [Member]
Loans	36,552	35,414
Home Equity And Second Mortgage Loans [Member] | Nonperforming Financing Receivable [Member]
Loans	194	147
Non Commercial Portfolio Segment [Member]
Loans	194,250	193,021
Non Commercial Portfolio Segment [Member] | Unrated [Member]
Loans	148,077	146,889
Non Commercial Portfolio Segment [Member] | Pass [Member]
Loans	44,951	44,441
Non Commercial Portfolio Segment [Member] | Substandard [Member]
Loans	$ 1,222	$ 1,691