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Components of marketable securities (Details) - Commercial PaperAnd Corporate Bonds [Member] - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022
Marketable Securities [Line Items]
Amortized Cost	$ 83,549	$ 339,540
Unrealized gains	0	7
Unrealized Losses	(1,220)	(2,969)
Fair Value	$ 82,329	$ 336,578

X

- Definition

Amount of unrealized gain on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27357-111563

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Amount of unrealized loss on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

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-Publisher FASB
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-Section 50
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+ References

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-Section 45
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