Basic and Diluted Net Loss Per Share - Schedule of Shares of Common Stock Equivalents Were Excluded from the Computation of Diluted Net Loss Per Share (Details) - shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Total common stock equivalents excluded from the computation of diluted net loss per share	152,686,642	157,645,607
Common Stock Warrants [Member]
Total common stock equivalents excluded from the computation of diluted net loss per share	102,758,031	118,148,846
Convertible Notes [Member]
Total common stock equivalents excluded from the computation of diluted net loss per share	9,490,186
Common Stock Options [Member]
Total common stock equivalents excluded from the computation of diluted net loss per share	40,438,425	39,496,761