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Warrant Liability - Schedule of Warrant Activity (Details) - Warrant - $ / shares
12 Months Ended
Feb. 14, 2017
Dec. 31, 2017
Dec. 31, 2016
Number of Shares Under Warrant      
Beginning balance (in shares)   0  
Granted (in shares) 8,235,923 8,235,923  
Exercised (in shares)   (2,728,434)  
Expired (in shares)   (5,087,717)  
Ending balance (in shares)   419,772 0
Number of shares under warrant, vested and exercisable at December 31, 2017   419,772  
Weighted Average Exercise Price      
Beginning balance (in dollars per share)   $ 0.00  
Granted (in dollars per share)   1.43  
Exercised (in dollars per share)   1.46  
Expired (in dollars per share)   1.40  
Ending balance (in dollars per share)   1.46 $ 0.00
Weighted Average Exercise Price, vested and exercisable (in dollars per share)   $ 1.46  
Weighted Average Remaining Contractual Life (Years)      
Balance   4 years 4 months 17 days 0 years
Granted   0 years  
Exercised   0 years  
Expired   0 years  
Vested and Exercisable   4 years 4 months 17 days  
Minimum      
Number of Shares Under Warrant      
Range of warrant price per share, granted (in dollars per share)   $ 1.35  
Range of warrant price per share, vested and exercisable at December 31, 2017 (in dollars per share)   1.35  
Maximum      
Number of Shares Under Warrant      
Range of warrant price per share, granted (in dollars per share)   1.50  
Range of warrant price per share, vested and exercisable at December 31, 2017 (in dollars per share)   $ 1.50