Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

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Fair Value Measurements (Details) - Recurring basis - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Assets $ 6,532,339 $ 7,324,932
Level 3 | Contingent consideration    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities 7,859,361 9,050,564
Level 3 | Warrant liability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities 11,520 2,950
Level 3 | Unit purchase option liability    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Liabilities $ 27,314 $ 7,216