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Fair Value Measurements - Schedule of Impairment Charges by Income Statement Line Item (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | $ 3,455 | $ 6,175 | $ 40,698
Cost of net product revenue |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | 0 | 0 | 2,865
Cost of net service revenue |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | 0 | 0 | 3,492
Selling and Marketing Expense |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | 0 | 6,175 | 11,515
Research and Development Expense |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | 0 | 0 | 12,974
General and Administrative Expense |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | 0 | 0 | 9,852
Restructuring Charges |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Impairment of assets | $ 3,455 | $ 0 | $ 0

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482130/360-10-45-4 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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