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Note 1 - Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Common Share (Details) - USD ($)
 12 Months Ended
Nov. 30, 2024
Nov. 30, 2023
Numerator for basic and diluted net income per share:    
Net income (loss) from continuing operations $ (94,466) $ 762,789
Net income (loss) from discontinued operations 401,841 (495,820)
Net Income $ 307,375 $ 266,969
Denominator:    
For basic net income per share - weighted average common shares outstanding (in shares) 5,052,167 5,002,238
Effect of dilutive stock options (in shares) 0 0
For diluted net income per share - weighted average common shares outstanding (in shares) 5,052,167 5,002,238
Net income (loss) per share - Basic:    
Continuing Operations (in dollars per share) $ (0.02) $ 0.15
Discontinued Operations (in dollars per share) 0.08 (0.1)
Net income per share (in dollars per share) 0.06 0.05
Net income (loss) per share - Diluted:    
Continuing Operations (in dollars per share) (0.02) 0.15
Discontinued Operations (in dollars per share) 0.08 (0.1)
Net income per share (in dollars per share) $ 0.06 $ 0.05