Annual report pursuant to Section 13 and 15(d)

Warrants - Additional Information (Details)

v3.21.4
Warrants - Additional Information (Details) - USD ($)
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Class Of Warrant Or Right [Line Items]    
Fair value adjustment of warrants $ 462,000
Stock based compensation expense 489,000 $ 86,000
Series B Convertible Preferred Stock    
Class Of Warrant Or Right [Line Items]    
Fair value adjustment of warrants $ 462,000  
Series B Convertible Preferred Stock Warrants    
Class Of Warrant Or Right [Line Items]    
Warrants additional extended expiration period 2 years  
Series B Convertible Preferred Stock Warrants | Series B Convertible Preferred Stock    
Class Of Warrant Or Right [Line Items]    
Number of warrants outstanding and exercisable   118,029
Warrants exercise price, outstanding and exercisable   $ 20.80