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Balance Sheet Details - Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Sep. 30, 2024
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 319,762 | $ 332,359
Accumulated Amortization | (223,496) | (220,783)
Net Carrying Amount | 96,266 | 111,576
Developed Technology Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 280,954 | 287,431
Accumulated Amortization | (200,554) | (192,967)
Net Carrying Amount | 80,400 | 94,464
Customer Relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 12,000 | 17,700
Accumulated Amortization | (5,133) | (10,034)
Net Carrying Amount | 6,867 | 7,666
Patents And Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 12,308 | 9,795
Accumulated Amortization | (4,517) | (3,629)
Net Carrying Amount | 7,791 | 6,166
Trade Names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 14,500 | 15,473
Accumulated Amortization | (13,292) | (12,193)
Net Carrying Amount | 1,208 | 3,280
Non-Compete Covenants [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 0 | 1,960
Accumulated Amortization | 0 | (1,960)
Net Carrying Amount | $ 0 | $ 0

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