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Securities (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Securities [Abstract]        
Collateralized mortage obligations, amortized cost   $ 77,000   $ 108,000
Collateralized mortage obligations, fair value   79,000   111,000
Investment securities, pledged as collateral for public deposits   $ 87,087,000   100,113,000
Net realized gains of investment securities $ 786,000      
Sales of investment securities $ 47,473,000      
Federal Home Loan Bank stock and Federal Reserve Bank stock, cost   $ 15,453,000   6,016,000
Federal Home Loan Bank Stock, cost   8,421,000   $ 6,016,000
Federal Reserve Bank, cost   $ 7,032,000