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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Summary of computation of basic and diluted earnings per common share
  Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
  2016  2015  2016  2015 
Earnings per common share – Basic            
             
Net income $1,528,444  $295,552  $1,644,183  $393,323 
                 
Weighted average number of common shares outstanding  9,096,852   8,935,951   9,030,764   8,926,176 
                 
Earnings per common share – Basic $0.17  $0.03  $0.18  $0.04 
                 
Earnings per common share – Diluted                
                 
Net income $1,528,444  $295,552  $1,644,183  $393,323 
                 
Weighted average number of common shares outstanding  9,096,852   8,935,951   9,030,764   8,926,176 
                 
Dilutive effect of employee stock options  50,732   77,889   52,511   90,411 
                 
Weighted average number of common shares outstanding - Diluted  9,147,584   9,013,840   9,083,275   9,016,587 
                 
Earnings per common share – Diluted $0.17  $0.03  $0.18  $0.04