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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, 2015
Dec. 31, 2014
Numerator:    
Net income $ 6,776 $ 5,596
Denominator:    
Basic weighted average shares outstanding 9,127,385 9,166,769
Dilutive common stock equivalents using treasury stock method 467,274 414,557
Diluted weighted average shares (in shares) 9,594,659 9,581,326
Basic earnings per common share: (in dollars per share) $ 0.74 $ 0.61
Diluted earnings per common share: (in dollars per share) $ 0.71 $ 0.58
Weighted average options outstanding 1,053,785 975,696
Anti-dilutive options not included in the computation 177,125 209,751