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Business Combinations (Details 2) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Business Combinations [Abstract]    
Net interest income $ 74,409 $ 69,341
Net income $ 22,776 $ 20,661
Basic and diluted earnings per share $ 0.83 $ 0.77