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Stockholders' Equity - Securities Purchase Agreement (Details) - USD ($)
3 Months Ended
Jun. 15, 2020
May 26, 2020
May 14, 2020
May 11, 2020
Apr. 09, 2020
Mar. 30, 2020
Jun. 30, 2020
[1]
Class of Stock [Line Items]              
Sale of stock, number of shares issued (in shares)   1,205,400 146,854 447,761 904,970 800,000  
Number of shares called by warrants (in shares) 2,213,115            
Months until exercisable 6 months            
Exercise price of warrants (in USD per share) $ 3.05            
Expiration term 5 years 6 months            
Proceeds from sale of stock   $ 2,500,000 $ 810,000   $ 1,100,000 $ 1,000,000.0 $ 17,278,428
Sale of stock, price per share (in dollars per share)     $ 1.43 $ 1.34      
Series I Warrant              
Class of Stock [Line Items]              
Number of shares called by warrants (in shares)           131,967  
Series J Warrant              
Class of Stock [Line Items]              
Number of shares called by each warrant           1  
Months until exercisable           6 months  
Exercise price of warrants (in USD per share)           $ 0.948  
Expiration term           5 years 6 months  
Series K Warrant              
Class of Stock [Line Items]              
Number of shares called by warrants (in shares)         255,000    
Series L Warrants              
Class of Stock [Line Items]              
Number of shares called by each warrant         1    
Months until exercisable         6 months    
Exercise price of warrants (in USD per share)         $ 0.81    
Expiration term         5 years 6 months    
Series M Warrant              
Class of Stock [Line Items]              
Number of shares called by warrants (in shares)   482,160          
Months until exercisable   6 months          
Exercise price of warrants (in USD per share)   $ 2.024          
Expiration term   5 years 6 months          
[1] Net of expenses of $616,143, and fair value of warrants issued as a transaction advisory fee as of the date of issuance of $370,666.