Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

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Fair Value Measurements (Details) - Recurring basis - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Assets $ 258,966 $ 471,183
Level 3 | Contingent consideration    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities 10,651,081 2,576,633
Level 3 | Royalties payable    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities 304,020  
Level 3 | Warrant liability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities 15,590 8,185
Level 3 | Unit purchase option liability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities $ 42,837 $ 26,991