Note 4 - Long-lived Assets (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Depreciation, Total	$ 158,253	$ 200,957
Proceeds from Sale of Property, Plant, and Equipment, Total	11,442
Goodwill, Ending Balance	2,061,022	$ 2,061,022
Goodwill, Impaired, Accumulated Impairment Loss	0
Equipment [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	11,442
Gain (Loss) on Disposition of Assets, Total	$ (12,398)