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v3.24.2.u1

Summary of restricted stock activity under the Plan (Details) - Restricted Stock [Member] - $ / shares | 12 Months Ended |
--- | --- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2021
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnvestedAndOutstandingNumber-0] | 175,130 | 781,060 | 1,083,675
[custom:SharebasedCompensationSharesRestrictedStockUnvestedAndOutstandingWeightedAverageExercisePrice-0] | $ 2.09 | $ 2.44 | $ 2.59
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockGrantsInPeriodGross] | 298,643 | 780,884 |
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockGrantsInPeriodWeightedAverageGrantDateFairValue] | $ 1.06 | $ 2.14 |
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardRestrictedStockNumberVestedInPeriod] | (485,024) | (1,062,372) |
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockNumberVestedInPeriodWeightedAverageGrantDateFairValue] | $ 1.92 | $ 2.42 |
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardRestrictedStockNonvestedOptionsForfeitedNumberOfShares] | 419,549 | (21,127) |
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice] | $ 2.09 | $ 2.13 |
[custom:SharebasedCompensationArrangementBySharebasedPaymentAwardRestrictedStockNonvestedOptionsForfeitedNumberOfShares] | (419,549) | 21,127 |

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