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EMPLOYEE STOCK PLANS (Details 4) - $ / shares | 12 Months Ended
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May 30, 2025 | May 31, 2024 | May 31, 2023
Employee Stock Purchase Plan |  |  |
Weighted-average grant date fair value | $ 2.01 | $ 6.30 | $ 13.60
Employee Stock Purchase Plan | Minimum [Member] |  |  |
Expected term (in years) | 6 months | 6 months | 6 months
Volatility | 80.00% | 70.00% | 91.00%
Risk-free interest rates | 3.61% | 4.72% | 3.97%
Employee Stock Purchase Plan | Maximum [Member] |  |  |
Expected term (in years) | 2 years | 2 years | 2 years
Volatility | 95.00% | 94.00% | 203.00%
Risk-free interest rates | 4.36% | 5.53% | 4.94%
Stock Option |  |  |
Expected term (in years) |  | 5 years |
Volatility |  | 93.00% | 86.00%
Risk-free interest rates |  | 4.34% | 3.12%
Weighted-average grant date fair value |  | $ 36.02 | $ 6.29
Stock Option | Minimum [Member] |  |  |
Expected term (in years) |  |  | 5 years
Stock Option | Maximum [Member] |  |  |
Expected term (in years) |  |  | 6 years

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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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