Note 3 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 8,639,000	$ 0	$ 8,639,000	$ 0
Income Tax Expense (Benefit), Total	$ (443,893)	$ (805,676)	$ (443,893)	$ (1,675,381)