Supplemental Balance Sheet Information - Schedule of Other Long-term Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Other Liabilities Disclosure [Abstract]
Deferred consideration	$ 3,404	$ 4,260
Contingent consideration	835	829
Unrecognized tax benefits	1,997	1,841
Operating lease liabilities	3,317	3,843
Other	189
Other long-term liabilities	$ 9,742	$ 10,773