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Debt and Warrants - 2019 Bridge Note Warrants (Details)
3 Months Ended 4 Months Ended 6 Months Ended
Jul. 19, 2019
USD ($)
$ / shares
May 28, 2018
USD ($)
Jun. 30, 2019
USD ($)
Jun. 26, 2019
USD ($)
item
Jun. 26, 2018
Jun. 30, 2019
USD ($)
item
Jun. 30, 2019
USD ($)
Mar. 31, 2019
USD ($)
Feb. 28, 2015
USD ($)
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount                 $ 150,000
Gains (Losses) on Extinguishment of Debt     $ (2,663,198)       $ (4,605,158)    
Unit Price | $ / shares $ 2.00                
2019 Bridge Note Warrants                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Fair value of warrants     4,977,985 $ 5,005,739   $ 4,977,985 4,977,985 $ 892,713  
Change in fair value of derivative liability     4,085,269       4,085,269    
Gains (Losses) on Extinguishment of Debt             27,757    
Addition of new warrants with a fair value             4,113,026    
Unit Price | $ / shares $ 2.00                
2019 Bridge Notes                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount $ 3,550,000   5,050,000 $ 5,050,000   $ 5,050,000 5,050,000    
Number Of Promissory Notes Issued | item       21   21      
2019 Exchange Note 2                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount   $ 2,296,926              
Gains (Losses) on Extinguishment of Debt   $ 2,046,939              
Fourteen Promissory Notes [Member]                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount     3,550,000 $ 3,550,000   $ 3,550,000 3,550,000    
Number Of Promissory Notes Issued | item       14   14      
Warrant Coverage Percentage       125.00%   125.00%      
Fourteen Promissory Notes [Member] | 2019 Bridge Note Warrants                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount       $ 3,550,000          
Number Of Promissory Notes Issued | item       14          
Warrant Coverage Percentage       125.00%          
Seven Promissory Notes [Member]                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount     $ 1,500,000 $ 1,500,000   $ 1,500,000 $ 1,500,000    
Number Of Promissory Notes Issued | item       7   7      
Warrant Coverage Percentage       75.00% 75.00% 75.00%      
Seven Promissory Notes [Member] | 2019 Bridge Note Warrants                  
Convertible Promissory Notes and Common Stock Warrants [Line Items]                  
Debt Instrument, Face Amount       $ 1,500,000          
Number Of Promissory Notes Issued | item       7          
Warrant Coverage Percentage       75.00%