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Leases - Additional information related to leases (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | $ 7,318 | $ 6,349
Operating cash flows from finance leases | 802 | 861
Financing cash flows from finance leases | 1,430 | 1,351
Right-of-use assets obtained in exchange for operating lease liabilities |  |
Operating leases | $ 16,426 | $ 3,028
Weighted-average remaining lease term: |  |
Operating leases | 9 years 3 months 18 days | 10 years 6 months
Finance leases | 9 years 8 months 12 days | 10 years 4 months 24 days
Weighted-average discount rate: |  |
Operating leases | 4.80% | 4.60%
Finance leases | 4.70% | 4.70%

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