Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Warrants issued and outstanding (Details)

v3.22.4
Stockholders' Equity - Warrants issued and outstanding (Details) - $ / shares
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Warrants [Roll Forward]    
Exercise price of warrants (in dollars per share)   $ 6.50
Warrants, Outstanding at the beginning of the period 895,939 820,939
Issued   75,000
Warrants, Expired (715,939)  
Warrants, Outstanding at the end of the period 180,000 895,939
Warrants, Exercisable at the end of the period 180,000  
Weighted-Average Exercise Price, Outstanding at the beginning of the period $ 18.35 $ 19.44
Weighted-Average Exercise Price, Expired 21.01  
Weighted-Average Exercise Price, Outstanding at the end of the period 7.80 $ 18.35
Weighted-Average Exercise Price, Exercisable at the end of the period $ 7.80  
Weighted-Average Remaining Contractual Life, Outstanding at the end of the period 1 year 3 months 18 days 10 months 24 days
Weighted-Average Remaining Contractual Life, Exercisable at the end of the period 1 year 3 months 18 days  
Weighted average exercise price, Issued   $ 6.50
July 6, 2023    
Warrants [Roll Forward]    
Exercise price of warrants (in dollars per share) $ 8.73  
Warrants, Outstanding at the end of the period 105,000  
September 20, 2024    
Warrants [Roll Forward]    
Exercise price of warrants (in dollars per share) $ 6.50  
Warrants, Outstanding at the end of the period 75,000