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Investment Securities (Summary Of Proceeds, Gross Gains and Gross Losses On Available For Sale Securities) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Investments [Abstract]      
Proceeds $ 56,889us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds $ 53,215us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds $ 129,936us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds
Gross gains 303us-gaap_AvailableForSaleSecuritiesGrossRealizedGains 548us-gaap_AvailableForSaleSecuritiesGrossRealizedGains 811us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Gross losses (196)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses (560)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses (304)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
Net gains (losses) $ 107us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet $ (12)us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet $ 507us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet