Loans And The Allowance For Loan Losses (Schedule Of Non-Performing Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2016		Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		$ 912,137		$ 773,305	$ 730,485
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		187,440		144,330	132,780
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		1,531		1,735	2,934
Non-Performing Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		14,414		15,545
Accruing loans 90+ days past due		865		497
Total Balance		$ 15,279		$ 16,042
Total non-performing loans to total assets		1.41%		1.71%
Total non-performing loans to total loans		1.67%		2.07%
Non-Performing Loans [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		$ 6,365		$ 5,312
Non-Performing Loans [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		19		14
Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		723,166		627,240
Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance	[1]	112,899			99,956
Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		546,129	[1]	460,711	434,914	[1]
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		64,138		61,042	$ 59,901
Total Real Estate Loans [Member] | Non-Performing Loans [Member] | Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		1,087		1,058
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		111,685		103,941
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		462,411		399,819
Mortgages [Member] | Total Real Estate Loans [Member] | Non-Performing Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		872		1,400
Mortgages [Member] | Total Real Estate Loans [Member] | Non-Performing Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		1,893		3,574
Construction [Member] | Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		1,214		1,546
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Balance		83,718		60,892
Construction [Member] | Total Real Estate Loans [Member] | Non-Performing Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans
Construction [Member] | Total Real Estate Loans [Member] | Non-Performing Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		$ 4,178		$ 4,187

[1] Includes construction loans