Note 5 - Common Stock (Details Narrative) - shares	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Stockholders' equity (deficit)
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Stock issued during period	42,066,172
Shares reserved for conversion of convertible debt to stock	4,032,919
Stock issued as compensation	174,422
Shares held for furutre exercise of noqualified options and warrants	5,109,617