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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

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