Annual report pursuant to Section 13 and 15(d)

Basic and Diluted Net Loss Per Share - Schedule of Computation of Diluted Net Income (Loss) Per Share (Details)

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Basic and Diluted Net Loss Per Share - Schedule of Computation of Diluted Net Income (Loss) Per Share (Details) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Total common stock equivalents 158,543,623 165,647,549
Common Stock Warrants [Member]    
Total common stock equivalents 118,046,862 127,434,122
Common Stock Options [Member]    
Total common stock equivalents 40,496,761 38,213,427