Leases - Schedule of Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Leases [Abstract] | ||||
| Operating cash flows from operating leases | $ 4,089 | $ 3,875 | $ 11,976 | $ 11,554 |
| Weighted-average remaining lease term (in years) | 10 years 8 months 12 days | 11 years 10 months 24 days | 10 years 8 months 12 days | 11 years 10 months 24 days |
| Weighted-average discount rate | 8.20% | 8.00% | 8.20% | 8.00% |