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Securities (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]      
Proceeds from sales of securities $ 15,317 $ 25,876 $ 24,766
Gross realized gains 312 261 341
Gross realized losses $ 0 $ 0 $ 30