Note 6 - Net Income (Loss) Per Share of Common Stock - Basic and Diluted Earnings Per Common Share (Details) - USD ($)	3 Months Ended
	Feb. 28, 2026	Feb. 28, 2025
Numerator for basic and diluted net income (loss) per share:
Net income (loss)	$ 196,442	$ (55,757)
Denominator:
For basic net income (loss) per share - weighted average common shares outstanding (in shares)	5,140,165	5,054,665
Effect of dilutive stock options (in shares)	0	0
For diluted net income (loss) per share - weighted average common shares outstanding (in shares)	5,140,165	5,054,665
Net Income (loss) per share - Basic:
Net income (loss) per share (in dollars per share)	$ 0.04	$ (0.01)
Net Income (loss) per share - Diluted:
Net income (loss) per share (in dollars per share)	$ 0.04	$ (0.01)