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Business Description, Basis of Presentation and Significant Accounting Policies - Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Numerator:    
Net income $ 5,596 $ 5,179
Denominator:    
Basic weighted average shares outstanding 9,166,769 9,064,340
Dilutive common stock equivalents using treasury stock method 414,557 391,178
Diluted weighted average shares (in shares) 9,581,326 9,455,518
Basic earnings per common share: (in dollars per share) $ 0.61 $ 0.57
Diluted earnings per common share: (in dollars per share) $ 0.58 $ 0.55
Weighted average options outstanding 975,696 1,128,045
Anti-dilutive options not included in the computation 209,751 149,773