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Investment (Income), Net - Net (Gain) Loss on Marketable Securities (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2024 | Nov. 30, 2023 | Nov. 30, 2024 | Nov. 30, 2023
Net (Gain) Loss on Marketable Securities |  |  |  |
Unrealized (gains) losses on marketable equity securities | $ (4,727) | $ 103 | $ (10,505) | $ (6,424)
Realized (gains) losses on marketable equity securities | (70) | 87 | (265) | 132
Realized losses on available-for-sale debt securities | 84 | 35 | 86 | 66
Net (gain) loss on marketable securities | $ (4,713) | $ 225 | $ (10,684) | $ (6,226)

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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-14 + Details
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- Definition Amount of realized and unrealized gain (loss) on investment in marketable security. + References No definition available. + Details
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