Warrant Liabilities (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative [Line Items]
Gain on warrant liabilities	$ (2,468,603)	$ 2,933,707	$ 12,234,301	$ 838,487
Warrants [Member]
Derivative [Line Items]
Risk-free interest rate (in hundredths)			0.44%	0.63%
Expected dividend yield (in hundredths)			0.00%	0.00%
Expected lives			1 year 11 months 16 days	2 years 11 months 16 days
Expected volatility (in hundredths)			84.10%	67.30%
Warrants classified as liabilities (in shares)	6,984,716	6,984,716	6,984,716	6,984,716
Gain on warrant liabilities	$ (2,500,000)	$ 2,900,000	$ 12,234,301	$ 838,487