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Securities (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Securities (Textual)    
Fair value of securities pledged as collateral $ 84,000 $ 42,600
Securities delivered for repurchase agreements 19,400 15,800
Gross gains realized from sales of available-for-sale securities 110  
Tax expense for net security gains 40  
Total fair value of investments $ 8,702 $ 37,245
Fair value as a percentage of available-for-sale investment portfolio 9.00% 34.00%
Unrealized loss on the securities portfolio $ 40 $ 430