Note 1 - Organization and Significant Accounting Policies - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net income (loss)	$ (105,961)	$ (144,548)	$ (86,415)	$ (354,645)
Weighted average number of common shares outstanding – basic and diluted (in shares)	7,786,284	7,773,263	7,778,319	7,334,018
Effect of dilutive securities (in shares)	0	0	0	0
Diluted weighted-average shares outstanding (in shares)	7,786,284	7,773,263	7,778,319	7,334,018
Net loss per share – basic and diluted (in dollars per share)	$ (0.01)	$ (0.02)	$ (0.01)	$ (0.05)