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Securities (Details Textual) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Securities (Textual)      
Fair value of securities pledged as collateral, to secure public deposits and for other purposes $ 74,200   $ 44,500
Fair value of securities delivered for repurchase agreements 18,700   16,500
Total, Fair Value $ 17,423   $ 28,951
Fair value as a percentage of available-for-sale investment portfolio 18.00%   35.00%
Gross Unrealized Losses $ (135)   $ (289)
Securities for reverse repurchase agreements   $ 60  
Tax expense for net security gains $ 20