Note 10 - Options and Warrants to Purchase Common Stock (Details) - Summary of the Status of the Warrants Outstanding (USD $)	9 Months Ended
	Sep. 30, 2014		Aug. 31, 2013	Mar. 31, 2013	Dec. 22, 2011
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.75	[1]	$ 1.93	$ 1.97	$ 2.00
Number Outstanding	6,204,930
Weighted Average Remaining Contractual Life	2 years 156 days
Exercise Price 1 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 0.75
Number Outstanding	139,340
Weighted Average Remaining Contractual Life	1 year
Exercise Price 2 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 0.78
Number Outstanding	213,402
Weighted Average Remaining Contractual Life	1 year 124 days
Exercise Price 3 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 0.80
Number Outstanding	124,481
Weighted Average Remaining Contractual Life	1 year 3 months
Exercise Price 4 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.00
Number Outstanding	212,000
Weighted Average Remaining Contractual Life	332 days
Exercise Price 5 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.15
Number Outstanding	461,340
Weighted Average Remaining Contractual Life	6 years 211 days
Exercise Price 6 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 1.93
Number Outstanding	5,000,000
Weighted Average Remaining Contractual Life	2 years 83 days
Exercise Price 7 [Member]
Class of Warrant or Right [Line Items]
Exercise Price	$ 2.00
Number Outstanding	54,367
Weighted Average Remaining Contractual Life	1 year 306 days

[1] Weighted average