Goodwill and Intangible Assets - Amortization Expense Associated with Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 275	$ 532	$ 825	$ 1,619
Completed Technology
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	125	125	375	375
Customer Contracts
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 150	$ 407	$ 450	$ 1,244