Allowance for Loan Losses (Nonaccrual and Past Due Loans By Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 2,187	$ 6,280
Current	605,128	562,958
Total Loans	607,315	569,238	$ 517,125
90 or More Days Past Due Still Accruing	695	0
Nonaccrual Loans	2,118	6,339
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,091	1,126
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	196	950
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	900	4,204
Commercial - Non Real Estate Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	127	227
Current	32,959	37,200
Total Loans	33,086	37,427
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	1,081	594
Commercial - Non Real Estate Commercial And Industrial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	127	75
Commercial - Non Real Estate Commercial And Industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	10
Commercial - Non Real Estate Commercial And Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	142
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	136,309	127,018
Total Loans	136,309	127,018
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	0	0
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Non-Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	368
Current	129,286	112,529
Total Loans	129,286	112,897
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	364	767
Commercial Real Estate Non-Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial Real Estate Non-Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	368
Commercial Real Estate Non-Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction And Farmland Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	6,706	3,214
Total Loans	6,706	3,214
90 or More Days Past Due Still Accruing	0	0
Construction And Farmland Residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction And Farmland Residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction And Farmland Residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0
Construction And Farmland Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	187
Current	55,220	48,953
Total Loans	55,220	49,140
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	0	0
Construction And Farmland Commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	187
Construction And Farmland Commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction And Farmland Commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4	19
Current	8,466	10,168
Total Loans	8,470	10,187
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	0	13
Consumer Installment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4	17
Consumer Installment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer Installment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	2
Residential Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	18
Current	32,815	32,820
Total Loans	32,815	32,838
90 or More Days Past Due Still Accruing	0	0
Nonaccrual Loans	92	44
Residential Equity Lines [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	18
Residential Equity Lines [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential Equity Lines [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential Single Family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,056	5,461
Current	186,990	184,911
Total Loans	189,046	190,372
90 or More Days Past Due Still Accruing	695	0
Nonaccrual Loans	581	4,921
Residential Single Family [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	960	829
Residential Single Family [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	196	572
Residential Single Family [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	900	4,060
Residential Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	7,923	4,095
Total Loans	7,923	4,095
90 or More Days Past Due Still Accruing	0	0
All Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	8,454	2,050
Total Loans	8,454	2,050	$ 2,259
90 or More Days Past Due Still Accruing	$ 0	$ 0