Note 1 - Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Common Share (Details) - USD ($)	12 Months Ended
	Nov. 30, 2020	Nov. 30, 2019
Numerator for basic and diluted net income (loss) per share:
Net income (loss)	$ (2,103,486)	$ (1,419,586)
Denominator:
For basic net income (loss) per share - weighted average common shares outstanding (in shares)	4,393,887	4,277,375
Effect of dilutive stock options (in shares)
For diluted net income (loss) per share - weighted average common shares outstanding (in shares)	4,393,887	4,277,375
Net Income (Loss) per share - Basic:
Net Income (Loss) per share (in dollars per share)	$ (0.48)	$ (0.33)
Net Income (Loss) per share - Diluted:
Net Income (Loss) per share (in dollars per share)	$ (0.48)	$ (0.33)