Note 8 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Note 8 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value [Line Items]
Warrants liability - fair value balance	$ 979,800		$ 7,390,100
Change in fair value of warrant liability	(1,406,000)		3,616,600
Reclassification of warrant liability	(4,993,500)
Exercise of Warrants [Member]
Note 8 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value [Line Items]
Reclassification of warrant liability	(602,500)	[1]
Amendment to Warrants [Member]
Note 8 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value [Line Items]
Reclassification of warrant liability	(4,391,000)	[1]
Other Income [Member]
Note 8 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value [Line Items]
Change in fair value of warrant liability	(1,406,000)
General and Administrative Expense [Member]
Note 8 - Liability Attributable to Warrants (Details) - Reconciliation of Warrants Liability Measured at Fair Value [Line Items]
Change in fair value of warrant liability	$ (10,800)

[1] During the year ended December 31, 2013, our warrants liability was reduced as a result of the warrants amendment, as discussed above. Additionally, our warrants liability was further reduced by $602,500 as a result of the exercise of 1,717,500 warrants during such period, whose terms were not affected by the changes made under the warrants amendment. The aggregate reduction in the liability, combining the warrant amendment and these exercises, was $4,993,500. See Note 14.