Loans And The Allowance For Loan Losses (Schedule Of Non-Performing Loans) (Details) - USD ($) $ in Thousands		Mar. 31, 2017		Dec. 31, 2016	Mar. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		$ 944,632		$ 941,729	$ 796,170
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		192,041		197,371	150,813
Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		66,229		66,234
Consumer And Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		1,344		1,417	2,172
Non-Performing Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		12,213		11,298
Accruing loans 90+ days past due		72		722
Total		$ 12,285		$ 12,020
Total non-performing loans to total assets		1.08%		1.09%
Total non-performing loans to total loans		1.30%		1.28%
Non-Performing Loans [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		$ 2,771		$ 3,106
Non-Performing Loans [Member] | Consumer And Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		11		17
Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		751,247		742,941
Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	[1]	124,973			106,694
Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		560,045	[1]	555,625	474,898	[1]
Total Real Estate Loans [Member] | Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		66,229		66,234	$ 61,593
Total Real Estate Loans [Member] | Non-Performing Loans [Member] | Home Equities [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total non-accruing loans		1,232		1,261
Mortgages [Member] | Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		122,818		118,542
Mortgages [Member] | Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		464,288		462,385
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		846		862
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		3,174		1,874
Construction [Member] | Total Real Estate Loans [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		2,155		2,540
Construction [Member] | Total Real Estate Loans [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total		95,757		93,240
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		$ 4,179		$ 4,178

[1] Includes construction loans