Fair Value Measurement (Details 1) (USD $)	Mar. 31, 2013	Mar. 06, 2013	Dec. 31, 2012
Risk-free interest rate		0.81%
Expected volatility		147.15%
Expected life (in years)	4 years 8 months
Expected dividend yield
Number of warrants	75,757	474,266	550,664
Fair value	$ 215,853	$ 5,695,935	$ 3,125,393
Minimum [Member]
Risk-free interest rate	0.14%		0.16%
Expected volatility	96.57%		91.79%
Expected life (in years)	7 months		10 months
Maximum [Member]
Risk-free interest rate	77.00%		0.72%
Expected volatility	147.28%		146.03%
Expected life (in years)	4 years 7 months		4 years 11 months