Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details)

v3.21.4
Related Party Transactions (Details) - Underhill
$ in Thousands
6 Months Ended 12 Months Ended
Apr. 08, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Jan. 23, 2021
Jan. 20, 2021
Related Party Transaction [Line Items]          
Expenses paid to related party $ 751 $ 2,400 $ 5,400    
President And General Counsel          
Related Party Transaction [Line Items]          
Portion of ownership percentage relinquished       0.5  
President And General Counsel | President And General Counsel          
Related Party Transaction [Line Items]          
Ownership percentage         20.00%