Goodwill and Other Intangible Assets, Net - Summary of Acquired Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 127,359	$ 138,407
Accumulated Amortization	53,228	54,256
Manufacturing Technologies, Core Products and Cell Lines [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	56,289	64,867
Accumulated Amortization	20,321	25,084
Tradenames, Licenses and Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	18,257	18,489
Accumulated Amortization	10,491	9,492
Customer Lists, Customer Relationships, and Supply Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	52,703	54,941
Accumulated Amortization	22,363	19,649
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	110	110
Accumulated Amortization	$ 53	$ 31