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Intangible Assets (Tables)
6 Months Ended
Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets The following table presents the components of intangible assets:
Gross Carrying AmountAccumulated AmortizationImpairmentNet Carrying AmountUseful Lives
(in thousands)(in years)
As of March 31, 2024
Patents$21,728 $14,097 $— $7,631 14
License3,129 1,348 — 1,781 21
Total intangible assets, net$24,857 $15,445 $— $9,412 
As of September 30, 2023
Patents$21,728 $13,321 $— $8,407 14
License3,129 1,274 — 1,855 21
Total intangible assets, net$24,857 $14,595 $— $10,262 
Schedule of Intangible Assets Future Amortization Expense
The following table presents the estimated future amortization expense related to intangible assets as of March 31, 2024:
Amortization Expense
Year Ending September 30, (in thousands)
2024 (remainder)$850 
20251,700 
20261,700 
20271,700 
20281,700 
Thereafter1,762 
Total$9,412