v3.23.1
The company (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Class of Warrant or Right [Line Items]    
Accumulated deficit $ 828,416 $ 610,553
Subsequent Public Offering    
Class of Warrant or Right [Line Items]    
Proceeds from the issuance of equity securities 1,333,700  
Proceeds from issuance of debt $ 13,800