Note 6 - Revenue Sharing, Note Purchase Agreement (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2016
Advances From Agreement			$ 3,500,000
Additional Notes Aggregate Amount	$ 11,500,000
Additional Notes Payable Outstanding	2,169,422	$ 2,024,422
Interest Payable	$ 375,112	$ 276,770
Percentage of Revenue Applied For Payment of Interest	100.00%
Maximum [Member]
Percentage of Revenue Applied For Payment of Interest	50.00%
Minimum [Member]
Percentage of Revenue Applied For Payment of Interest	20.00%