Note 2 - Summary of Significant Accounting Policies (Details) - Antidilutive Securities - shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Convertible Securities, Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities		195,062,650
Preferred Stock Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities		16,680,324
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	3,005,783	339,742
Common Stock Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities	2,864,823