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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Basic Earnings Per Share        
Net income $ 1,450 $ 1,554 $ 4,523 $ 4,139
Weighted average common shares outstanding 3,289,146 3,300,139 3,287,765 3,298,321
Basic earnings per share $ 0.44 $ 0.47 $ 1.37 $ 1.25
Diluted Earnings Per Share        
Plus dilutive stock options and restricted stock units 6,686 9,129 6,841 8,662
Weighted average common shares outstanding and potentially dilutive shares 3,295,832 3,309,268 3,294,606 3,306,983
Diluted earnings per share $ 0.44 $ 0.47 $ 1.37 $ 1.25