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Subsequent Events (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 19, 2020
Oct. 02, 2020
May 26, 2020
May 14, 2020
May 11, 2020
Apr. 09, 2020
Mar. 30, 2020
Oct. 31, 2020
Jun. 30, 2020
 [1]
Sep. 30, 2020
Sep. 30, 2019
Subsequent Event [Line Items]                      
Sale of stock, number of shares issued (in shares)     1,205,400 146,854 447,761 904,970 800,000        
Sale of stock, price per share (in dollars per share)       $ 1.43 $ 1.34            
Proceeds from sale of stock     $ 2,500,000 $ 810,000   $ 1,100,000 $ 1,000,000.0   $ 17,278,428    
Proceeds from warrant exercise                   $ 18,972,188 $ 3,291,010
Warrants exercised (in shares)                   9,047,582  
Subsequent Event                      
Subsequent Event [Line Items]                      
Sale of stock, number of shares issued (in shares)   6,500,000                  
Sale of stock, price per share (in dollars per share)   $ 13.50                  
Gross proceeds from sale of stock   $ 100,900,000                  
Proceeds from sale of stock   $ 94,000,000.0                  
Proceeds from warrant exercise               $ 3,400,000      
Warrants exercised (in shares)               1,600,000      
Subsequent Event | Paycheck Protection Program                      
Subsequent Event [Line Items]                      
Repayment of note $ 305,000                    
Subsequent Event | Over-Allotment Option                      
Subsequent Event [Line Items]                      
Sale of stock, number of shares issued (in shares)   975,000                  
[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.