Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Additional information (Details)

v3.20.4
Stock-Based Compensation - Additional information (Details) - USD ($)
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Stock-Based Compensation    
Unrecognized compensation costs $ 4,200,000  
Weighted-average amortization period 1 year 3 months 18 days  
Intrinsic value of stock options exercised $ 100,000  
Number of stock options forfeited 31,731 0
Weighted average grant date fair value of options granted $ 5.23 $ 2.31
Warrants issued 105,000  
Warrants vesting period 6 months  
Exercise price of warrants (in dollars per share) $ 8.73  
Initial fair value of warrants $ 496,343 $ 950,151
Unrecognized compensation costs $ 0  
Remaining vesting period 1 year 3 months 18 days  
Unvested restricted stock    
Stock-Based Compensation    
Expiration period (in years)   3 years
Weighted-average amortization period 0 years  
Gross proceeds from the sale of the restricted stock   $ 1,000
Fair value of restricted stock vested $ 100,000 $ 8,200,000
Remaining vesting period 0 years  
Common stock purchase warrants    
Stock-Based Compensation    
Weighted-average amortization period 3 months 18 days  
Unrecognized compensation costs $ 300,000  
Remaining vesting period 3 months 18 days  
2016 Plan    
Stock-Based Compensation    
Number of common stock authorized 291,667  
Common shares were available for future grants 147,041  
2019 Plan    
Stock-Based Compensation    
Number of common stock authorized 3,783,114  
Common shares were available for future grants 981,827  
Minimum    
Stock-Based Compensation    
Vesting period (in years) 1 year  
Maximum    
Stock-Based Compensation    
Vesting period (in years) 4 years  
Expiration period (in years) 10 years