Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 7,286		$ 7,286		$ 8,562
Amortization expense	400	$ 400	1,300	$ 1,300
Novartis
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,857		24,857		24,857
Accumulated Amortization	17,571		17,571		16,295
Impairment	0		0		0
Net Carrying Amount	7,286		7,286		8,562
Novartis | Patents
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,728		21,728		21,728
Accumulated Amortization	16,037		16,037		14,873
Impairment	0		0		0
Net Carrying Amount	$ 5,691		$ 5,691		$ 6,855
Useful Lives (in years)	14 years		14 years		14 years
Novartis | License
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,129		$ 3,129		$ 3,129
Accumulated Amortization	1,534		1,534		1,422
Impairment	0		0		0
Net Carrying Amount	$ 1,595		$ 1,595		$ 1,707
Useful Lives (in years)	21 years		21 years		21 years