Note 4 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value - Warrant Liabilities [Member]	6 Months Ended
	Jun. 30, 2015 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrants liability	$ 647,300
Change in fair value of warrant liability recorded in other income	(129,300)
Reclassification of 2014 PIPE Warrant to Equity	(407,300)
Warrants liability	96,400
General and Administrative Expense [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in fair value of warrant liability recorded in general and administrative expense	$ (14,300)