Revenue Recognition - Summary of Unbilled Receivables (Detail) - USD ($) $ in Thousands	Feb. 28, 2022	May 31, 2021
Receivables
Unbilled Receivables And Contract Assets [Line Items]
Unbilled receivables	$ 5,837	$ 5,317

Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

No definition available.

Name:	us-gaap_UnbilledReceivablesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant