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Earnings Per Share - Additional Information (Details) - shares
3 Months Ended 9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Earnings Per Share [Abstract]        
Antidilutive securities excluded from computation of earnings per share 38,500 21,000 38,500 21,000