Annual report pursuant to Section 13 and 15(d)

Fair Value - Fair Value Measurements (Details)

v3.21.4
Fair Value - Fair Value Measurements (Details)
12 Months Ended
Sep. 30, 2021
USD ($)
Y
Sep. 30, 2020
USD ($)
Y
Liabilities    
Warrant liabilities $ 100,000 $ 500,000
Change in fair value of the warrant liabilities    
Fair value at the beginning 950,151 496,343
Change in fair value $ (950,151) 453,808
Fair value at the end   950,151
Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrant liabilities   $ 950,151
Remaining contractual term (years)    
Liabilities    
Warrants and Rights Outstanding, Measurement Input | Y 3.0 3.0
Remaining contractual term (years) | Minimum | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input | Y 0.2 1.2
Remaining contractual term (years) | Maximum | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input | Y 0.5 1.5
Common stock price volatility    
Liabilities    
Warrants and Rights Outstanding, Measurement Input 83.9 86.4
Common stock price volatility | Minimum | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input 60.6 91.1
Common stock price volatility | Maximum | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input 62.5 96.1
Risk-free interest rate    
Liabilities    
Warrants and Rights Outstanding, Measurement Input 0.5 0.2
Risk-free interest rate | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input 0.04  
Risk-free interest rate | Minimum | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input   0.12
Risk-free interest rate | Maximum | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrants and Rights Outstanding, Measurement Input   0.13
Level 3 | Estimate of Fair Value Measurement [Member]    
Liabilities    
Warrant liabilities   $ 950,151