Loans And The Allowance For Loan Losses (Loans Classified As Troubled Debt Restructurings) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Modifications [Line Items]
Total	$ 7,946	$ 8,258
Related Allowance	396	47
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	2,017	2,052
Related Allowance	396	26
Consumer And Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Total		21
Related Allowance		21
Nonaccruing [Member]
Financing Receivable, Modifications [Line Items]
Total	5,489	4,027
Nonaccruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	1,781	328
Nonaccruing [Member] | Consumer And Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Total
Accruing [Member]
Financing Receivable, Modifications [Line Items]
Total	2,457	4,231
Accruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Total	236	1,724
Accruing [Member] | Consumer And Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Total		21
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	671	738
Related Allowance
Total Real Estate Loans [Member] | Nonaccruing [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	170	175
Total Real Estate Loans [Member] | Accruing [Member] | Home Equities [Member]
Financing Receivable, Modifications [Line Items]
Total	501	563
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	1,681	1,815
Related Allowance
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	3,577	3,632
Related Allowance
Mortgages [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	498	449
Mortgages [Member] | Total Real Estate Loans [Member] | Nonaccruing [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	3,040	3,075
Mortgages [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Residential Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	1,183	1,366
Mortgages [Member] | Total Real Estate Loans [Member] | Accruing [Member] | Commercial Real Estate Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Total	537	557
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
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