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Note 5 - Net Income (Loss) Per Share of Common Stock - Basic and Diluted Earnings Per Common Share (Details) - USD ($)
3 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Numerator for basic and diluted net income (loss) per share:    
Net (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 (in shares) 4,243,707 4,170,818
Effect of dilutive stock options (in shares)
For diluted net income (loss) per share - weighted average common shares outstanding (in shares) 4,243,707 4,170,818
Net Income (Loss) per share - Basic:    
Continuing Operations (in dollars per share) $ (0.14) $ (0.13)
Discontinued Operations (in dollars per share) (0.01)
Net Income (Loss) per share (in dollars per share) (0.14) (0.14)
Net Income (Loss) per share - Diluted:    
Continuing Operations (in dollars per share) (0.14) (0.13)
Discontinued Operations (in dollars per share) (0.01)
Net Income (Loss) per share (in dollars per share) $ (0.14) $ (0.14)