Note 7 - Derivative Liability and Fair Value Measurements (Details) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Warrants Reclassified to Derivative Liabilties						3,572,714
Cumulative effect of adoption of ASC 815						$ 1,676,633
Change In Fair Value Warrants	(3,926)	(144,390)
Warrants Issued Attached to Preferred Stock			1,313,533	1,704,884	676,775	953,370
ConvertiblePreferredStock			1,116	1,449	575	810
Additional Warrants Issued as Stock Offering			757,223	1,022,931	391,353	286,011
Derivative Liability, Fair Value, Gross Liability			301,800	2,184,753	852,346	988,552
Series A Preferred Derivatives Maturity Date	7
Series A Preferred Derivatives Stock Price	$ 0.85
Series A Preferred Derivatives Conversion Stock Price	$ 1.70
Warrants Exercise Price	$ 0.85
Warrants Exercise Price Subject to Adjustments	$ 1.27
Investor Warrants Target Price	$ 1.58
Placement Agent Warrants Target Price	$ 1.40
Preferred Value Fair Value	3,496,569		3,182,380
Fair Value Liabilities Measured Oon Recurring Basis Warrants	2,127,345		2,504,879
Deficit Accumulated During the Development Stage
Cumulative effect of adoption of ASC 815						$ 43,808
Minimum
Investment Warrants, Exercise Price	$ 0.85
Maximum
Investment Warrants, Exercise Price	$ 1.27