Goodwill and Intangible Assets - Amortization Expense Associated with Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 275	$ 543	$ 550	$ 1,087
Completed Technology
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	125	125	250	250
Customer Contracts
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 150	$ 418	$ 300	$ 837