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Earn-out Milestone Liability (Tables)
 9 Months Ended
Sep. 30, 2019
Hercules Warrant [Member]  
Schedule of Changes in Earn-out Milestone Liability

The following is a summary of the changes in the earn-out milestone liability for 2019:

 

Balance at January 1, 2019   $ (8,907,664 )
Non-cash gain from the adjustment for the change in fair value     3,088,821  
Balance at September 30, 2019   $ (5,818,843 )
Schedule of Milestone Risk Adjustment Assessment

The following is a schedule of the Company’s risk-adjustment assessment of each milestone:

 

Date  

Risk-adjustment Assessment

of achieving each Milestone

     Discount Rate    

Estimated Time

to Achieve

                 
September 30, 2019     80%       9%     0.92 to 1.92 years
June 30, 2019     80%       9%     0.75 to 1.75 years
December 31, 2018     80%       9%     1.25 years
                     
September 30, 2018     0% to 80%       9%     0.00 to 1.17 years
June 30, 2018     35% to 80%       9%     0.83 to 1.00 years
December 31, 2017     35% to 80%       9%     1.33 to 1.50 years