Goodwill and Other Intangible Assets - Summary of Gross Carrying Amounts and Accumulated Amortization of Intangible Assets by Major Class (Details) - USD ($) $ in Thousands |
Dec. 31, 2024 |
Sep. 30, 2024 |
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| Finite Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | $ 195,056 | $ 198,701 |
| Accumulated Amortization | (193,997) | (196,995) |
| Net Carrying Amount | 1,059 | 1,706 |
| Customer Relationships | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | 106,043 | 108,659 |
| Accumulated Amortization | (104,984) | (106,953) |
| Net Carrying Amount | $ 1,059 | $ 1,706 |
| Weighted Average Remaining Life (Years) | 2 months 12 days | 6 months |
| Technology and Patents | ||
| Finite Lived Intangible Assets [Line Items] | ||
| Gross Carrying Amount | $ 89,013 | $ 90,042 |
| Accumulated Amortization | $ (89,013) | $ (90,042) |
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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