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Investments (Gross Gains And Losses Realized) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Investments [Abstract]      
Gross realized gains $ 1,256us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 764us-gaap_AvailableForSaleSecuritiesGrossRealizedGains $ 1,776us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Gross realized losses (100)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses 0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses (246)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
Investment security gains (losses) $ 1,156us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet $ 764us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet $ 1,530us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet