Note 10 - Commitments and Contingencies (Details Textual) - USD ($)			12 Months Ended		108 Months Ended
	Dec. 31, 2017	Jun. 23, 2009	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2017
Operating Leases, Rent Expense, Total			$ 1,254,087	$ 1,125,147
License Payments		$ 300,000
Additional Income (Expense) Related to Settlement Agreement			$ 0	$ 108,702
Settlement and Licensing Agreement [Member]
Patent Royalty Percentage Obligation					2.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	1,000,000			1,000,000	1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01			$ 0.01	$ 0.01
Loss Contingency, Estimate of Possible Loss	$ 300,000			$ 300,000	$ 300,000
Class of Warrant or Right, Percentage, Exercised for Stock	50.00%
Stock Issued During Period, Shares, Exercise of Warrants	500,000
Class of Warrant or Right, Percentage, Exercised for Cash Payment	50.00%
Proceeds from Warrant Exercises	$ 145,000
Computer Equipment [Member]
Property, Plant and Equipment, Useful Life			5 years