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Intangible Assets (Tables)
3 Months Ended
Dec. 31, 2022
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
(amounts in thousands)(in years)
As of December 31, 2022
Patents$21,728 $12,158 $— $9,570 14
License3,129 1,162 — 1,967 21
Total intangible assets, net$24,857 $13,320 $— $11,537 
As of September 30, 2022
Patents$21,728 $11,770 $— $9,958 14
License3,129 1,125 — 2,004 21
Total intangible assets, net$24,857 $12,895 $— $11,962 
Schedule of Intangible Assets Future Amortization Expense
The following table presents the estimated future amortization expense related to intangible assets as of December 31, 2022:
Amortization Expense
Year Ending September 30, (in thousands)
2023 (remainder)$1,275 
20241,700 
20251,700 
20261,700 
20271,700 
Thereafter3,462 
Total$11,537