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6. Earnings (Loss) Per Share (Tables)
9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Reconciliation of (loss) earnings per share

                 Per share  
     Net income (loss)      Shares      amount  
Basic net income per common share for the                  
three months ended September 30, 2018:                  
Income available to common shareholders   $ 27,964       11,201,760     $ -  
Effect of dilutive stock options     -       391,423       -  
Diluted net income per common share for the                        
three months ended September 30, 2018   $ 27,964       11,593,183     $ -  
                         
Basic net income per common share for the                        
three months ended September 30, 2017:                        
Income available to common shareholders   $ 110,284       11,201,760     $ 0.01  
Effect of dilutive stock options     -       308,951       -  
Diluted net income per common share for the                        
three months ended September 30, 2017   $ 110,284       11,510,711     $ 0.01  
                         
Basic net loss per common share for the                        
nine months ended September 30, 2018:                        
Loss available to common shareholders   $ (11,194 )     11,201,760     $ -  
Effect of dilutive stock options     -       -       -  
Diluted net loss per common share for the                        
nine months ended September 30, 2018   $ (11,194 )     11,201,760     $ -  
                         
Basic net income per common share for the                        
nine months ended September 30, 2017:                        
Income available to common shareholders   $ 167,386       11,201,760     $ 0.01  
Effect of dilutive stock options     -       307,442       -  
Diluted net income per common share for the                        
nine months ended September 30, 2017   $ 167,386       11,509,202     $ 0.01