Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
May 31, 2022	May 31, 2021	May 31, 2020
Cash Disposed Of In The Divested Subsidary	$ 0	$ 0	$ 665
Beijing Ainuo Shida Education & Technology Co., Ltd [Member]
Purchase of business, cash acquired	$ 0	$ 430	$ 1,419

Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration