Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Stockholders' Equity - Stock-based Compensation for Restricted Stock Units (Details)

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Note 8 - Stockholders' Equity - Stock-based Compensation for Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member] - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Share-based compensation expense $ 65,002 $ 121,635 $ 195,005 $ 311,352
General and Administrative Expense [Member]        
Share-based compensation expense 65,002 65,000 195,005 195,005
Selling and Marketing Expense [Member]        
Share-based compensation expense $ 0 $ 56,635 $ 0 $ 116,347