Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 8,987		$ 8,987		$ 10,262
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	15,870		15,870		14,595
Impairment	0		0		0
Net Carrying Amount	8,987		8,987		10,262
Novartis | Patents
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,728		21,728		21,728
Accumulated Amortization	14,485		14,485		13,321
Impairment	0		0		0
Net Carrying Amount	$ 7,243		$ 7,243		$ 8,407
Useful Lives	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	1,385		1,385		1,274
Impairment	0		0		0
Net Carrying Amount	$ 1,744		$ 1,744		$ 1,855
Useful Lives	21 years		21 years		21 years