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Balance Sheet Details - Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Sep. 30, 2023
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 332,359 $ 396,142
Accumulated Amortization (220,783) (245,173)
Net Carrying Amount 111,576 150,969
Developed Technology Rights    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 287,431 319,368
Accumulated Amortization (192,967) (190,135)
Net Carrying Amount 94,464 129,233
Customer Relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 17,700 45,642
Accumulated Amortization (10,034) (33,298)
Net Carrying Amount 7,666 12,344
Patents And Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 9,795 13,699
Accumulated Amortization (3,629) (9,658)
Net Carrying Amount 6,166 4,041
Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 15,473 15,473
Accumulated Amortization (12,193) (10,122)
Net Carrying Amount 3,280 5,351
Non-Compete Covenants [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 1,960 1,960
Accumulated Amortization (1,960) (1,960)
Net Carrying Amount $ 0 $ 0