Note 7 - Stockholders' Equity (Details Textual) - USD ($)		1 Months Ended	2 Months Ended	3 Months Ended
	Feb. 15, 2016	Feb. 29, 2016	Feb. 29, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Series C Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues			1,400,000
Conversion of Stock, Shares Converted			132	132
Preferred Stock, Shares Outstanding				2,868		3,000
Convertible Preferred Stock, Total Conversion Shares				30,460,662
Series B Convertible Preferred Stock [Member]
Preferred Stock, Shares Outstanding				100		100
Convertible Preferred Stock, Total Conversion Shares				285,714
Common Stock Warrants [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues		3,664,588
Series E Warrants [Member]
Warrant Exercise Fee Per Share	$ 0.02916
Class of Warrant or Right, Exercised During Period	3,664,588
Proceeds from Warrant Exercises				$ 238,198
General and Administrative Expense	$ 469,799
Employee Stock Option [Member]
Allocated Share-based Compensation Expense				$ 13,686	$ 16,902
Class of Warrant or Right, Exercised During Period				(3,664,588)
General and Administrative Expense				$ 906,505	$ 401,441
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized				$ 81,658
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				2 years