Annual report pursuant to Section 13 and 15(d)

Earnings Per Share & Diluted Earnings Per Share - Additional Information (Details)

v3.22.2.2
Earnings Per Share & Diluted Earnings Per Share - Additional Information (Details) - shares
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Stock Options      
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share (in shares) 189,000 101,000 642,000