Loans And The Allowance For Loan Losses (Loans Classified As Troubled Debt Restructurings) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Total	$ 5,090	$ 5,767
Related Allowance	174	193
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	574	517
Related Allowance	147	165
Consumer And Other [Member]
Financing Receivable, Modifications [Line Items]
Total	26	28
Related Allowance	26	28
Nonaccruing [Member]
Financing Receivable, Modifications [Line Items]
Total	1,247	1,812
Nonaccruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	532	508
Nonaccruing [Member] | Consumer And Other [Member]
Financing Receivable, Modifications [Line Items]
Total
Accruing [Member]
Financing Receivable, Modifications [Line Items]
Total	3,843	3,955
Accruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	42	9
Accruing [Member] | Consumer And Other [Member]
Financing Receivable, Modifications [Line Items]
Total	26	28
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	667	867
Related Allowance	1
Total Real Estate Loans [Member] | Nonaccruing [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	175	281
Total Real Estate Loans [Member] | Accruing [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	492	586
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	1,949	1,789
Related Allowance
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	1,617	1,732
Related Allowance
Mortgages [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	227	689
Mortgages [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	313	334
Mortgages [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	1,722	1,100
Mortgages [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	1,304	1,398
Construction [Member] | Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total
Related Allowance
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	257	834
Related Allowance
Construction [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total
Construction [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total
Construction [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total
Construction [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	$ 257	$ 834