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Securities (Gains (Losses) on the sales of debt securities and credit losses for OTTI of investments) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Gain (Loss) on Investments [Line Items]    
Net Gains (Losses) $ (166)us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet $ 0us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet
Debt Securities [Member]    
Gain (Loss) on Investments [Line Items]    
Gross Realized Gains 7us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
0us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
Gross Realized (Losses) (173)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
Net Gains (Losses) $ (166)us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember
$ 0us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_DebtSecuritiesMember