Note 11 - Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Obsolete inventory	$ 21,881	$ 21,881
Deferred tax assets, accrued vacation	35,872	33,755
Accrued bonuses	5,593	99,666
Stock-based compensation	1,970,789	968,170
Lease obligation	10,601
Intangible assets, net	508,289	572,687
Contribution, carryforward	735	707
Net operating loss carryforwards	4,505,111	2,588,401
Capital loss carryforward		1,027,111
Other		391
Valuation allowance	(7,048,088)	(5,312,769)
Deferred tax asset	10,783
Other	(182)
Right of use Asset	(10,601)
Net deferred tax asset