Note 1 - Nature of Business and Summary of Significant Accounting Policies - Basic and Diluted Loss Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Basic net loss	$ (432,937)	$ (1,500,410)
Add back: Gain on change in fair value of derivative liabilities	(492,198)
Diluted net loss	$ (925,135)	$ (1,500,410)
Weighted average basic shares outstanding (in shares)	17,594,220	17,066,576
Shares issuable from convertible credit line payable (in shares)	130,578
Dilutive shares (in shares)	17,724,798	17,066,576
Basic (in dollars per share)	$ (0.02)	$ (0.09)
Diluted (in dollars per share)	$ (0.05)	$ (0.09)