Summary of Significant Accounting Policies and Supplemental Balance Sheet Information - Schedule of Accrued Other Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Accrued Liabilities, Current [Abstract]
Accrued professional fees	$ 178	$ 279
Accrued clinical study expense	1,056	1,425
Accrued purchases	1,142	1,655
Deferred consideration	2,661	981
Operating lease liability, current portion	$ 872	$ 963
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued other liabilities	Accrued other liabilities
Other	$ 535	$ 551
Accrued other liabilities	$ 6,444	$ 5,854