Revenue Recognition - Summary of Changes in Allowance for Credit Losses (Detail) $ in Thousands	6 Months Ended
	Mar. 31, 2023 USD ($)
Revenue from Contract with Customer [Abstract]
Balance at September 30, 2022	$ 7,755
Current period provision	4,768
Write-offs, net and other	(1,728)
Balance as of December 31, 2022	$ 10,795