Loans And The Allowance For Loan Losses (Loans Classified As Troubled Debt Restructurings) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Total	$ 12,659	$ 5,090
Related Allowance	826	174
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	1,525	574
Related Allowance	433	147
Consumer And Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Total	25	26
Related Allowance	25	26
Nonaccruing [Member]
Financing Receivable, Modifications [Line Items]
Total	5,299	1,247
Nonaccruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	990	532
Nonaccruing [Member] | Consumer And Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Total
Accruing [Member]
Financing Receivable, Modifications [Line Items]
Total	7,360	3,843
Accruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	535	42
Accruing [Member] | Consumer And Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Total	25	26
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	625	667
Related Allowance		1
Total Real Estate Loans [Member] | Nonaccruing [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	129	175
Total Real Estate Loans [Member] | Accruing [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	496	492
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	1,664	1,949
Related Allowance
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	8,623	1,617
Related Allowance	368
Mortgages [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	265	227
Mortgages [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	3,915	313
Mortgages [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	1,399	1,722
Mortgages [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	4,708	1,304
Construction [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total
Related Allowance
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	197	257
Related Allowance
Construction [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total
Construction [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total
Construction [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total
Construction [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	$ 197	$ 257