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Revenue Recognition - Summary of Changes in Allowance for Credit Losses (Detail)
$ in Thousands
3 Months Ended
Dec. 31, 2021
USD ($)
Revenue From Contract With Customer [Abstract]  
Balance at September 30, 2021 $ 4,779
Current period provision (288)
Write-offs, net and other 171
Balance as of December 31, 2021 $ 4,662