Earnings Per Share (Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details) - shares |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Options to purchase shares | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Options to purchase shares and restricted stock units (antidilutive) (in shares) | 1,230,475 | 2,231,475 | 1,215,475 | 2,231,475 |
| Restricted And Performance Stock Units | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Options to purchase shares and restricted stock units (antidilutive) (in shares) | 20,000 | 30,000 | 20,000 | 30,000 |