Stock-Based Compensation - Valuation Assumptions (Details) |
12 Months Ended | ||
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Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2024 |
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| Valuation assumptions: | |||
| Expected dividend yield | 0.00% | 0.00% | 0.00% |
| Expected volatility, minimum | 68.50% | 65.50% | 62.30% |
| Expected volatility, maximum | 71.00% | 66.20% | 62.30% |
| Risk-free interest rate, minimum | 3.70% | 3.50% | 4.70% |
| Risk-free interest rate, maximum | 3.95% | 4.60% | 4.70% |
| Minimum | |||
| Valuation assumptions: | |||
| Expected term (years) | 5 years 9 months 18 days | 6 years | 6 years 6 months |
| Maximum | |||
| Valuation assumptions: | |||
| Expected term (years) | 6 years 6 months | 6 years 6 months | 6 years 6 months |
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- References No definition available.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the maximum 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the minimum 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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