Stock Award Plans - Nonvested Stock Options (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2022 |
|
| Options Outstanding | |||
| Outstanding at beginning of period (in shares) | 1,390,422 | 981,410 | 1,031,134 |
| Granted (in shares) | 0 | 779,740 | 352,043 |
| Vested (in shares) | (412,160) | (217,695) | (223,387) |
| Forfeited (in shares) | (135,011) | (153,033) | (178,380) |
| Outstanding at end of period (in shares) | 843,251 | 1,390,422 | 981,410 |
| Weighted Average Grant Date Fair Value | |||
| Outstanding at beginning of period (in dollars per share) | $ 5.93 | $ 5.07 | $ 4.39 |
| Granted (in dollars per share) | 0 | 7.11 | 7.18 |
| Vested (in dollars per share) | 3.20 | 6.13 | 5.32 |
| Forfeited (in dollars per share) | 6.07 | 5.38 | 5.02 |
| Outstanding at end of period (in dollars per share) | $ 5.50 | $ 5.93 | $ 5.07 |