Warrant Liabilities (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative [Line Items]
Gain on warrant liability	$ 3,515,178	$ 7,326,049	$ 4,079,748	$ 19,560,350
Warrants [Member]
Derivative [Line Items]
Risk-free interest rate			0.21%	0.54%
Expected dividend yield			0.00%	0.00%
Expected lives			10 months 2 days	1 year 8 months 16 days
Expected volatility			69.10%	81.90%
Warrants classified as liabilities (in shares)	6,371,854	6,984,716	6,371,854	6,984,716
Gain on warrant liability	$ 3,515,178	$ 7,326,049	$ 4,079,748	$ 19,560,350