Stockholders' Equity - Summary of Warrant Activity (Details) (Warrant [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Warrant [Member]
Number of Warrants Outstanding, Beginning Balance	1,216,091
Number of Warrants granted	2,993,815
Number of Warrants exercised
Number of Warrants forfeited or expired
Number of Warrants outstanding, Ending Balance	4,209,906
Number of Warrants Exercisable	3,016,725
Weighted Average Exercise Price, Warrants Outstanding, Beginning Balance	$ 2.01
Weighted Average Exercise Price, Warrants granted	$ 1.64
Weighted Average Exercise Price, Warrants exercised
Weighted Average Exercise Price, forfeited or expired
Weighted Average Exercise Price, Warrants outstanding, Ending Balance	$ 1.75
Weighted Average Exercise Price, Exercisable	$ 1.65
Weighted Average Remaining Contractual Terms (Years), Outstanding	5 years
Weighted Average Remaining Contractual Terms (Years), Exercisable	5 years
Aggregate Intrinsic Value, Outstanding
Aggregate Intrinsic Value, Exercisable