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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Assets and liabilities measured at fair value are summarized below:

 

    Total Fair Value     Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)     Significant Other Observable Inputs (Level 2)     Significant Unobservable Inputs (Level 3)  
Assets:                        
                         
Recurring items as of June 30, 2020                                
Corporate debt securities, available for sale   $ 2,791,868     $     $ 2,791,868     $ ─    
                                 
Recurring items as of December 31, 2019                                
Corporate debt securities, available for sale   $ 7,985,886     $     $ 7,985,886     $ ─    
                                 
Liabilities:                                
                                 
Recurring items as of June 30, 2020                                
Earn-out milestone liability (Note 13)   $ 6,015,279     $     $ ─       $ 6,015,279  
                                 
Recurring items as of December 31, 2019                                
Earn-out milestone liability (Note 13)   $ 5,717,709     $     $ ─       $ 5,717,709