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Securities - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]          
Proceeds from sale of securities $ 4,065us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities $ 0us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities $ 10,859us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities $ 0us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities  
Gross gains on sale of securities 10us-gaap_AvailableForSaleSecuritiesGrossRealizedGains   35us-gaap_AvailableForSaleSecuritiesGrossRealizedGains    
Gross losses on sale of securities 0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses   9us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses    
Pledged securities, at carrying value $ 96,031us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged   $ 96,031us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged   $ 87,434us-gaap_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged