Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Outstanding letters of credit	$ 11,900	$ 11,900
Contractual Obligation Future Minimum Payments Due Through End of Lease	$ 5,300

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant