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Stock-Based Compensation (Schedule Of Unrecognized Compensation Cost, Stock Options) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Stock-Based Compensation [Abstract]  
2015 $ 96evbn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnrecognizedCompensationCostExpectedToBeRecognizedInNextTwelveMonths
2016 78evbn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnrecognizedCompensationCostExpectedToBeRecognizedInYearTwo
2017 48evbn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnrecognizedCompensationCostExpectedToBeRecognizedInYearThree
2018 $ 13evbn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnrecognizedCompensationCostExpectedToBeRecognizedInYearFour