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Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets | The following table presents the components of intangible assets:
| Gross Carrying Amount |  | Accumulated Amortization |  | Impairment |  | Net Carrying Amount |  | Useful Lives
| (in thousands) |  | (in years)
As of September 30, 2025 |  |  |  |  |  |  |  |  |
Patents | $ | 21,728 |  |  | $ | 16,426 |  |  | $ | — |  |  | $ | 5,302 |  |  | 14
License | 3,129 |  |  | 1,570 |  |  | — |  |  | 1,559 |  |  | 21
Total intangible assets, net | $ | 24,857 |  |  | $ | 17,996 |  |  | $ | — |  |  | $ | 6,861 |  |  |
As of September 30, 2024 |  |  |  |  |  |  |  |  |
Patents | $ | 21,728 |  |  | $ | 14,873 |  |  | $ | — |  |  | $ | 6,855 |  |  | 14
License | 3,129 |  |  | 1,422 |  |  | — |  |  | 1,707 |  |  | 21
Total intangible assets, net | $ | 24,857 |  |  | $ | 16,295 |  |  | $ | — |  |  | $ | 8,562 |  |  |
Schedule of Intangible Assets Future Amortization Expense | The following table presents the estimated future amortization expense related to intangible assets as of September 30, 2025:
|  | Amortization Expense |
Year Ending September 30, |  | (in thousands) |
2026 |  | $ | 1,700 |  |
2027 |  | 1,700 |  |
2028 |  | 1,700 |  |
2029 |  | 795 |  |
2030 |  | 149 |  |
Thereafter |  | 817 |  |
Total |  | $ | 6,861 |  |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 40 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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