Annual report pursuant to Section 13 and 15(d)

Income (Loss) Per Share - Additional Information (Details)

v3.20.4
Income (Loss) Per Share - Additional Information (Details) - shares
12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Earnings Per Share [Abstract]    
Antidilutive securities excluded from computation of earnings per share 0 1,939,603