Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 10,687,000		$ 10,687,000		$ 11,962,000
Amortization expense	400,000	$ 400,000	1,300,000	$ 1,300,000
Novartis
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,857,000		24,857,000		24,857,000
Accumulated Amortization	14,170,000		14,170,000		12,895,000
Impairment	0		0		0
Net Carrying Amount	10,687,000		10,687,000		11,962,000
Novartis | Patents
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,728,000		21,728,000		21,728,000
Accumulated Amortization	12,933,000		12,933,000		11,770,000
Impairment	0		0		0
Net Carrying Amount	$ 8,795,000		$ 8,795,000		$ 9,958,000
Useful Lives	14 years		14 years		14 years
Novartis | License
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,129,000		$ 3,129,000		$ 3,129,000
Accumulated Amortization	1,237,000		1,237,000		1,125,000
Impairment	0		0		0
Net Carrying Amount	$ 1,892,000		$ 1,892,000		$ 2,004,000
Useful Lives	21 years		21 years		21 years