Warrant Liabilities (Tables)

3 Months Ended

Mar. 31, 2015

Warrant Liabilities [Abstract]

Summary of assumptions used in connection with the valuation of warrants issued

	December 31, 2014			Exercised during 2015			March 31, 2015
Number of shares underlying the warrants		4,723,357			1,141,786			3,581,571
Exercise price	$	0.61		$	0.61		$	0.61
Volatility		128	%		119	%		119	%
Risk-free interest rate		1.38	%		0.89	%		0.89	%
Expected dividend yield		0			0			0
Expected warrant life (years)		3.5			3.33			3.24
Stock Price	$	0.98		$	1.69		$	1.69

Summary of fair value measurements using significant unobservable inputs (Level 3)

	December 31,  2014		Decrease from Warrants Exercised in 2015			Increase in Fair Value		March 31, 2015
Warrant liability	$	3,789,562	$	(1,648,811	)	$	3,011,616	$	5,152,367