Warrant Liabilities (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative [Line Items]
Gain (loss) on warrant liability	$ 7,326,049	$ (4,010,811)	$ 19,560,350	$ (3,172,324)
Warrants [Member]
Derivative [Line Items]
Risk-free interest rate (in hundredths)			0.54%	0.59%
Expected dividend yield (in hundredths)			0.00%	0.00%
Expected lives			1 year 8 months 16 days	2 years 8 months 16 days
Expected volatility (in hundredths)			81.90%	66.70%
Warrants classified as liabilities (in shares)	6,984,716	6,984,716	6,984,716	6,984,716
Gain (loss) on warrant liability	$ 7,300,000	$ (4,000,000)	$ 19,560,350	$ (3,172,324)