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Note 5 - Net Income (Loss) Per Share of Common Stock (Tables)
 3 Months Ended
Feb. 28, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
For the Three Months Ended
  
   
February 28, 2019
    
February 28, 2018
  
Numerator for basic and diluted net income (loss) per share:
                
                 
Net income (loss) from continuing operations
   $
(605,932
 )   $
(527,398
 )
Net income (loss) from discontinued operations
    
-
      
(39,054
 )
Net income (loss)
   $
(605,932
 )   $
(566,452
 )
                 
Denominator:
                
For basic net income (loss) per share - weighted average common shares outstanding
    
4,243,707
      
4,170,818
  
Effect of dilutive stock options
    
-
      
-
  
For diluted net income (loss) per share - weighted average common shares outstanding
    
4,243,707
      
4,170,818
  
                 
                 
Net Income (Loss) per share - Basic:
                
Continuing Operations
   $
(0.14
 )   $
(0.13
 )
Discontinued Operations
   $
-
     $
(0.01
 )
Net Income (Loss) per share
   $
(0.14
 )   $
(0.14
 )
                 
Net Income (Loss) per share - Diluted:
                
Continuing Operations
   $
(0.14
 )   $
(0.13
 )
Discontinued Operations
   $
-
     $
(0.01
 )
Net Income (Loss) per share
   $
(0.14
 )   $
(0.14
 )