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Stockholders' Equity - Series C Convertible Preferred Stock (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Jun. 15, 2020
May 08, 2020
Jan. 25, 2019
Jun. 30, 2020
Apr. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Class of Stock [Line Items]                    
Warrants granted (in shares)               5,831,451    
Exercise price of warrants (in USD per share) $ 3.05                  
Shares issued upon conversion (in shares)       1,546,700 333,333          
Service receivable     $ 1,675,000     $ 2,403,580   $ 2,403,580   $ 971,673
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance $ 2,700,000                  
Series C Convertible Preferred Stock                    
Class of Stock [Line Items]                    
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance     300,000     $ 0 $ 0 $ 0 $ 268,269  
Private Placement                    
Class of Stock [Line Items]                    
Amount financed under agreement   $ 2,300,000 $ 1,675,000              
Warrants granted (in shares)     150,000              
Exercise price of warrants (in USD per share)   $ 1.50 $ 3.762              
Common Stock | Private Placement                    
Class of Stock [Line Items]                    
Shares of common stock issued (in shares)   602,833 183,334              
Shares issued upon conversion (in shares)     1.67              
Series C Convertible Preferred Stock                    
Class of Stock [Line Items]                    
Shares converted (in shares)         200,000          
Series C Convertible Preferred Stock | Private Placement                    
Class of Stock [Line Items]                    
Shares of common stock issued (in shares)     200,000