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Note 4 - Net Income (Loss) Per Share of Common Stock (Tables)
 9 Months Ended
Aug. 31, 2017
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
For the three months ended
  
   
August 31, 2017
    
August 31, 2016
  
Numerator for basic and diluted (loss) earnings per common share:
                
                 
Net (loss) income from continuing operations
   $
41,648
     $
(149,676
 )
Net (loss) income from discontinued operations
    
(18,441
 )    
(138,603
 )
Net (loss) income
   $
23,207
     $
(288,279
 )
                 
Denominator:
                
For basic (loss) earnings per share - weighted average common shares outstanding
    
4,161,421
      
4,105,704
  
Effect of dilutive stock options
    
-
      
-
  
For diluted (loss) earnings per share - weighted average common shares outstanding
    
4,161,421
      
4,105,704
  
                 
                 
Earnings (Loss) per share - Basic:
                
Continuing Operations
   $
0.01
     $
(0.04
 )
Discontinued Operations
   $
-
     $
(0.03
 )
Net Income (Loss) per share
   $
0.01
     $
(0.07
 )
                 
Earnings (Loss) per share - Diluted:
                
Continuing Operations
   $
0.01
     $
(0.04
 )
Discontinued Operations
   $
-
     $
(0.03
 )
Net Income (Loss) per share
   $
0.01
     $
(0.07
 )
   
For the nine months ended
  
   
August 31, 2017
    
August 31, 2016
  
Numerator for basic and diluted (loss) earnings per common share:
                
                 
Net (loss) income from continuing operations
   $
(720,900
 )   $
807
  
Net (loss) income from discontinued operations
    
(33,482
 )    
(264,685
 )
Net (loss) income
   $
(754,382
 )   $
(263,878
 )
                 
Denominator:
                
For basic (loss) earnings per share - weighted average common shares outstanding
    
4,148,966
      
4,093,993
  
Effect of dilutive stock options
    
-
      
-
  
For diluted (loss) earnings per share - weighted average common shares outstanding
    
4,148,966
      
4,093,993
  
                 
                 
Earnings (Loss) per share - Basic:
                
Continuing Operations
   $
(0.17
 )   $
0.00
  
Discontinued Operations
   $
(0.01
 )   $
(0.06
 )
Net Income (Loss) per share
   $
(0.18
 )   $
(0.06
 )
                 
Earnings (Loss) per share - Diluted:
                
Continuing Operations
   $
(0.17
 )   $
0.00
  
Discontinued Operations
   $
(0.01
 )   $
(0.06
 )
Net Income (Loss) per share
   $
(0.18
 )   $
(0.06
 )