Note A - Organization and Business (Details Textual)	1 Months Ended			12 Months Ended
	Mar. 31, 2019 USD ($) shares	Feb. 28, 2019 USD ($) $ / shares shares	May 31, 2014 USD ($) shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($) $ / shares	Sep. 30, 2019
Number of Countries in which Entity Operates						60
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.50	$ 2.55
Proceeds from Issuance of Private Placement | $		$ 250,000	$ 10,000,000	$ 250,000
Warrants, Public Offering [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		1,428,750
Warrants and Rights Outstanding, Term		5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 0.50
Underwrite Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	141,850	141,850
Warrants, Private Offering [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		178,571
Warrants and Rights Outstanding, Term		5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 0.50
Public Offering [Member]
Proceeds from Issuance or Sale of Equity, Total | $		$ 2,000,000
Stock Issued During Period, Shares, New Issues		5,715,000
Proceeds from Stock Options Exercised | $	$ 198,000	$ 198,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	567,400	567,400
Private Placement [Member]
Stock Issued During Period, Shares, New Issues		714,286	2,000,000