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Note 4 - Net Income (Loss) Per Share of Common Stock (Tables)
 3 Months Ended
Feb. 28, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
For the three months ended
  
   
February 28, 2018
    
February 28, 2017
  
Numerator for basic and diluted (loss) earnings per common share:
                
                 
Net (loss) income from continuing operations
   $
(527,398
 )   $
(253,642
 )
Net (loss) income from discontinued operations
    
(39,054
 )    
3,613
  
Net (loss) income
   $
(566,452
 )   $
(250,029
 )
                 
Denominator:
                
For basic (loss) earnings per share - weighted average common shares outstanding
    
4,170,818
      
4,126,012
  
Effect of dilutive stock options
    
-
      
-
  
For diluted (loss) earnings per share - weighted average common shares outstanding
    
4,170,818
      
4,126,012
  
                 
                 
Earnings (Loss) per share - Basic:
                
Continuing Operations
   $
(0.13
 )   $
(0.06
 )
Discontinued Operations
   $
(0.01
 )   $
0.00
  
Net Income (Loss) per share
   $
(0.14
 )   $
(0.06
 )
                 
Earnings (Loss) per share - Diluted:
                
Continuing Operations
   $
(0.13
 )   $
(0.06
 )
Discontinued Operations
   $
(0.01
 )   $
0.00
  
Net Income (Loss) per share
   $
(0.14
 )   $
(0.06
 )