Loans (Schedule Of Loans Outstanding) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 826,656		$ 782,016
Less: Allowance for loan losses	(10,318)	$ (10,342)	(10,086)	$ (9,450)	$ (9,210)	$ (9,111)
Net Loans	816,338		771,930
Change Amount	$ 44,640
Change %	5.70%
Allowance for loan losses, Change Amount	$ (232)
Allowance for loan losses, Change %	2.30%
Net Loans, Change Amount	$ 44,408
Net Loans, Change %	5.80%
Net unamortized deferred loan fees	$ 225		436
Loans pledged as collateral for borrowings and commitments from: FHLB	583,567		643,449
Loans pledged as collateral for borrowings and commitments from :Federal Reserve Bank	42,060		45,111
Total loans pledged as collateral	625,627		688,560
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	215,551		212,391
Change Amount	$ 3,160
Change %	1.50%
Residential Real Estate - Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 8,320		7,888
Less: Allowance for loan losses	(205)	(199)	(194)	(206)	(249)	(214)
Change Amount	$ 432
Change %	5.50%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 371,786		340,695
Less: Allowance for loan losses	(5,940)	(6,181)	(5,649)	(5,179)	(5,137)	(4,978)
Change Amount	$ 31,091
Change %	9.10%
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 226,307		215,942
Less: Allowance for loan losses	(1,596)	(1,510)	(1,519)	(1,440)	(1,353)	(1,515)
Change Amount	$ 10,365
Change %	4.80%
Total Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 598,093		556,637
Change Amount	$ 41,456
Change %	7.40%
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 4,692		5,100
Less: Allowance for loan losses	(97)	(99)	(102)	(112)	(116)	(127)
Change Amount	$ (408)
Change %	(8.00%)
Consumer First Liens [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 101,113		103,698
Change Amount	$ (2,585)
Change %	(2.50%)
Consumer Junior Liens And Lines Of Credit [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 46,106		44,996
Change Amount	$ 1,110
Change %	2.50%
Consumer [Member] | Residential Real Estate - Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,067		545
Change Amount	$ 522
Change %	95.80%
Commercial Junior Liens And Lines Of Credit [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,908		5,917
Change Amount	$ (9)
Change %	(0.20%)
Commercial [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 62,424		57,780
Change Amount	$ 4,644
Change %	8.00%
Commercial [Member] | Residential Real Estate - Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,253		7,343
Change Amount	$ (90)
Change %	(1.20%)
First Liens [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 163,537		161,478
Less: Allowance for loan losses	(1,023)	$ (997)	(989)	$ (1,014)	$ (1,016)	$ (994)
Change Amount	$ 2,059
Change %	1.30%
Junior Lines And Lines Of Credit [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 52,014		$ 50,913
Change Amount	$ 1,101
Change %	2.20%