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Investment (Income), Net (Tables) | 3 Months Ended
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Aug. 31, 2025
Other Income and Expenses [Abstract] |
Investment (Income), Net | Investment (income), net, consists of the following components:
|  | Three Months Ended |
|  | August 31, |  | August 31, |
(In thousands) |  | 2025 |  | 2024 |
Interest (income) |  | $ | (3,760 | ) | $ | (3,983 | )
Net (gain) on marketable securities |  |  | (8,673 | ) |  | (5,971 | )
Dividend (income) |  |  | (971 | ) |  | (1,072 | )
Investment (income), net |  | $ | (13,404 | ) | $ | (11,026 | )
Net (Gain) on Marketable Securities | Net (Gain) on Marketable Securities
|  | Three Months Ended |
|  | August 31, |  | August 31, |
(In thousands) |  | 2025 |  | 2024 |
Unrealized (gains) on marketable equity securities |  | $ | (8,586 | ) | $ | (5,778 | )
Realized (gains) on marketable equity securities |  |  | (97 | ) |  | (195 | )
Realized losses on available-for-sale debt securities |  |  | 10 |  |  | 2 |
Net (gain) on marketable securities |  | $ | (8,673 | ) | $ | (5,971 | )

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- Definition Tabular disclosure of investment income, including, but not limited to, interest and dividend income and amortization of discount (premium) derived from debt and equity securities. Excludes realized and unrealized gain (loss) on investments. + 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(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: 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)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: 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)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 4: 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(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 + Details
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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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