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Leases - Additional information related to leases (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021
Cash paid for amounts included in the measurement of lease liabilities |  |
Operating cash flows from operating leases | $ 6,101 | $ 5,504
Operating cash flows from finance leases | 973 | 1,228
Financing cash flows from finance leases | 1,224 | 1,757
Right-of-use assets obtained in exchange for operating lease liabilities | $ 4,160 | $ 15,609
Weighted-average remaining lease term: |  |
Operating leases | 9 years 3 months 18 days | 10 years 3 months 18 days
Finance leases | 12 years | 11 years 8 months 12 days
Weighted-average discount rate: |  |
Operating leases | 3.20% | 3.10%
Finance leases | 4.60% | 4.20%

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