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Leases - Narrative (Details) $ in Thousands | 12 Months Ended
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Sep. 30, 2023 USD ($) sublease_option sublease | Sep. 30, 2022 USD ($)
Leases [Abstract] |  |
Impairment loss of long-lived asset | $ | $ 7,673 | $ 0
Number of subleased facilities | sublease | 1 |
Sublease term | 5 years |
Number of sublease extension options | sublease_option | 2 |
Sublease option extension period | 1 year |
Weighted-average remaining lease term | 6 years 3 months 18 days |
Weighted-average discount rate | 6.30% |

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- Definition Lessee, Operating Sublease, Lease Term + References No definition available. + Details
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- Definition Lessee, Operating Sublease, Number + References No definition available. + Details
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- Definition Lessee, Operating Sublease, Number Of Options To Extend + References No definition available. + Details
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- Definition Lessee, Operating Sublease, Option Extension Period + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479365/842-20-25-6 + Details
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- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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