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Assumptions used to calculate fair value of options granted (Details) - $ / shares | 6 Months Ended
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Oct. 31, 2025 | Oct. 31, 2024
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm2] |  | 5 years 8 months 23 days
Options Assumptions Used [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price | $ 0.95 | $ 1.15
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice1-0] | 1.12 | 2.45
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockPriceOnGrantDate-0] | 0.95 | 1.20
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsStockPriceOnGrantDate1-0] | $ 1.12 | $ 2.56
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum | 3.47% | 3.54%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum | 4.34% | 4.44%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term | 6 years | 5 years 2 months 1 day
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm2] | 8 years 3 months |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum | 242.38% | 191.43%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum | 260.22% | 199.03%

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- References No definition available. + Details
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. + References No definition available. + Details
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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. + 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)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + 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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