Loan Quality (Schedule Of Additional NonAccrual Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 acre		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	$ 12,291		$ 24,643
Allowance for loan losses	9,111		9,702	10,379	9,723
Credit 5 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses			993
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	8,430		19,001
Allowance for loan losses	5,417		5,571	6,450	5,257
Commercial Real Estate [Member] | Credit 1 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	3,040
Last Appraisal Amount	5,855	[1]
Area of Land	90
Commercial Real Estate [Member] | Credit 6 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	729
Last Appraisal Amount	1,550	[1]
Residential And Commercial Real Estate [Member] | Credit 2 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	864
Last Appraisal Amount	1,290	[1]
Area of Land	70
Residential Real Estate Member] | Credit 3 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	1,985
Last Appraisal Amount	3,895	[1]
Residential Real Estate Member] | Credit 4 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	1,756
Last Appraisal Amount	4,007	[1]
Commercial Real Estate And Commercial [Member] | Credit 5 [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	1,831
Allowance for loan losses	162
Last Appraisal Amount	2,965	[1]
Total Non Accrual Disclosure [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Non-accrual loans	10,205
Allowance for loan losses	$ 162

[1] Appraisal value, as reported, does not reflect the pay-off of any senior liens or the cost to liquidate the collateral, but does reflect only the Bank’s share of the collateral if it is a participated loan.