Goodwill and Intangible Assets - Amortization Expense Associated with Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 275	$ 544
Completed Technology
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	125	125
Customer Contracts
Finite-Lived Intangible Assets [Line Items]
Amortization expense of intangible assets	$ 150	$ 419