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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Apr. 03, 2018	Mar. 31, 2018
Capital Stock, Shares Authorized (in shares)				210,000,000
Common Stock, Shares Authorized (in shares)	200,000,000	200,000,000	200,000,000	200,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Preferred Stock, Shares Authorized (in shares)	10,000,000	10,000,000	10,000,000	10,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Cash, Uninsured Amount	$ 25,197,934	$ 38,392,886
Research and Development Assets, Current	$ 2,904,617	$ 3,022,403
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years

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