Acquisitions - Summary of Final Allocation of Purchase Consideration as of Acquisition Date (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Jul. 02, 2021
Business Acquisition [Line Items]
Goodwill	$ 42,946	$ 40,710	$ 45,606
Vetex Medical Limited [Member]
Business Acquisition [Line Items]
Current assets				$ 18
Property and equipment				37
Intangible assets				27,600
Other non-current assets				37
Accrued compensation				(236)
Other accrued liabilities				(111)
Deferred income taxes				(3,087)
Net assets acquired				24,258
Goodwill				19,366
Total purchase consideration, net of cash acquired				$ 43,624