Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Additional Information (Details)

v3.21.4
Property and Equipment - Additional Information (Details) - USD ($)
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Property, Plant and Equipment [Abstract]    
Depreciation expense $ 6,300,000 $ 5,100,000
Impairment charges $ 525,000