Loans (Schedule Of Loan Portfolio Composition) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 1,494,027	$ 1,399,764	$ 1,402,262
Total Commercial Related Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,290,520	1,197,830	1,201,206
Total Commercial Related Loans [Member] | Builder & Developer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	162,602	184,402	196,611
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	219,424	230,827	245,997
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	235,126	209,414	211,448
Total Commercial Related Loans [Member] | Hotel/Motel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	86,815	63,195	66,291
Total Commercial Related Loans [Member] | Wholesale & Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	105,949	103,040	98,373
Total Commercial Related Loans [Member] | Manufacturing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	84,441	62,510	58,961
Total Commercial Related Loans [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	65,520	59,931	57,927
Total Commercial Related Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	330,643	284,511	265,598
Total Consumer Related Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	203,507	201,934	201,056
Total Consumer Related Loans [Member] | Residential Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	82,763	79,325	79,988
Total Consumer Related Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	97,301	97,950	95,483
Total Consumer Related Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 23,443	$ 24,659	$ 25,585
Loan and Loan Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	100.00%	100.00%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	86.40%	85.60%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Builder & Developer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	10.90%	13.20%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	14.70%	16.50%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	15.70%	15.00%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Hotel/Motel [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	5.80%	4.50%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Wholesale & Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	7.10%	7.30%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Manufacturing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	5.70%	4.50%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Agriculture [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	4.40%	4.30%
Loan and Loan Receivable [Member] | Total Commercial Related Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	22.10%	20.30%
Loan and Loan Receivable [Member] | Total Consumer Related Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	13.60%	14.40%
Loan and Loan Receivable [Member] | Total Consumer Related Loans [Member] | Residential Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	5.50%	5.60%
Loan and Loan Receivable [Member] | Total Consumer Related Loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	6.50%	7.00%
Loan and Loan Receivable [Member] | Total Consumer Related Loans [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
% Total Loans	1.60%	1.80%