Equity Compensation Plans and Other Incentive Compensation - Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options Intrinsic Value (Detail) - USD ($) $ in Thousands	12 Months Ended
May 31, 2024	May 31, 2023	May 31, 2022
Aggregate intrinsic value of options outstanding	$ 55	$ 6,154	$ 850
Aggregate intrinsic value of options exercisable	5	42	817
Aggregate intrinsic value of options exerised	$ 37	$ 73	$ 5,507

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

+ References

+ Details

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