Loans And Leases (Credit Quality Indicator Loan Categories) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Unearned lease revenue	$ 969	$ 639
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	121,788	113,601
Commercial Real Estate: Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	89,568	92,851
Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	121,144	109,383
Commercial Real Estate: Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	7,510	6,228
Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	340,010	322,063
Consumer: Home Equity Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	31,511	27,317
Consumer: Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	52,936	53,273
Consumer: Auto Loans And Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	112,674	82,871
Consumer: Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	5,292	5,604
Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	202,413	169,065
Residential: Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	145,711	136,901
Residential: Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	12,754	9,931
Residential Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	158,465	146,832
Consumer And Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	360,878	315,897
Pass [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	120,023	112,398
Pass [Member] | Commercial Real Estate: Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	84,109	84,892
Pass [Member] | Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	113,589	103,426
Pass [Member] | Commercial Real Estate: Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	7,464	6,067
Pass [Member] | Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	325,185	306,783
Special mention [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	428	509
Special mention [Member] | Commercial Real Estate: Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	1,149	998
Special mention [Member] | Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	2,557	2,479
Special mention [Member] | Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	4,134	3,986
Substandard [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	1,337	694
Substandard [Member] | Commercial Real Estate: Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	4,310	6,961
Substandard [Member] | Commercial Real Estate: Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	4,998	3,478
Substandard [Member] | Commercial Real Estate: Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	46	161
Substandard [Member] | Commercial Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	10,691	11,294
Performing [Member] | Consumer: Home Equity Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	31,049	27,302
Performing [Member] | Consumer: Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	52,893	52,714
Performing [Member] | Consumer: Auto Loans And Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	112,598	82,860
Performing [Member] | Consumer: Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	5,292	5,604
Performing [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	201,832	168,480
Performing [Member] | Residential: Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	144,165	135,827
Performing [Member] | Residential: Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	12,754	9,931
Performing [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	156,919	145,758
Performing [Member] | Consumer And Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	358,751	314,238
Non-performing [Member] | Consumer: Home Equity Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	462	15
Non-performing [Member] | Consumer: Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	43	559
Non-performing [Member] | Consumer: Auto Loans And Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	76	11
Non-performing [Member] | Consumer Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	581	585
Non-performing [Member] | Residential: Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	1,546	1,074
Non-performing [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	1,546	1,074
Non-performing [Member] | Consumer And Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, net	$ 2,127	$ 1,659