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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
Summary of Warrant Activity

The following is a summary of warrant activity for the year ended December 31, 2016:

 

    Number of Warrants  
Outstanding as of December 31, 2015     486,723  
Ratchet warrants issued due to price reset     271,641,648  
Cashless warrant exercise     (3,270,888 )
Warrants exercise for cash     (68,750 )
Outstanding as of December 31, 2016     268,788,733