Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended				24 Months Ended
	Mar. 31, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2018	Sep. 30, 2024
Vetex Medical Limited [Member]
Commitments And Contingencies [Line Items]
Cash paid				$ 39,900,000
Deferred consideration, contractual value				$ 3,500,000
Installment payment beginning period				2024
Installment payment ending period				2027
Contingent consideration, contractual value				$ 3,500,000
Contingency period ending year				2027
Embolitech LLC [Member]
Commitments And Contingencies [Line Items]
Contingent payments upon achievement of regulatory milestones		$ 1,000,000.0
Installment payment period	2024
CRO [Member]
Commitments And Contingencies [Line Items]
Contractual obligation remaining to be paid	$ 2,000,000	2,000,000
CRO [Member] | Minimum [Member]
Commitments And Contingencies [Line Items]
Gross contractual obligation	37,000,000	37,000,000
CRO [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Gross contractual obligation	40,000,000	40,000,000
CRO [Member] | Maximum [Member] | CRO Pass-through Expenses [Member]
Commitments And Contingencies [Line Items]
Gross contractual obligation	$ 30,000,000	$ 30,000,000
In Process Research and Development | Embolitech LLC [Member]
Commitments And Contingencies [Line Items]
Contingency period ending year		2033
Payments to acquire in-process research and development		$ 1,000,000.0	$ 500,000	$ 1,000,000.0	$ 1,000,000.0	$ 5,000,000.0
In Process Research and Development | Embolitech LLC [Member] | Forecast [Member]
Commitments And Contingencies [Line Items]
Contractual obligation payable in fiscal 2022 through fiscal 2024							$ 1,000,000.0