Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 6,861	$ 8,562
Amortization expense	1,700	1,700	$ 1,700
Novartis
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,857	24,857
Accumulated Amortization	17,996	16,295
Impairment	0	0
Net Carrying Amount	6,861	8,562
Novartis | Patents
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,728	21,728
Accumulated Amortization	16,426	14,873
Impairment	0	0
Net Carrying Amount	$ 5,302	$ 6,855
Useful Lives	14 years	14 years
Novartis | License
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,129	$ 3,129
Accumulated Amortization	1,570	1,422
Impairment	0	0
Net Carrying Amount	$ 1,559	$ 1,707
Useful Lives	21 years	21 years