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Intangible Assets (Tables) | 12 Months Ended
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Apr. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Components of Intangible Assets | The components of intangible assets, net as of April 30, 2023 and 2022 consisted of the following: Schedule of Components of Intangible Assets
|  | April 30, 2023 |  |  | April 30, 2022 |
|  | (in thousands) |
Patents |  | $ | 2,729 |  |  | $ | 2,729 |
Trademarks |  | $ | 2,769 |  |  | $ | 2,769 |
Tradename |  | $ | 130 |  |  | $ | 130 |
Customer Relationships |  | $ | 150 |  |  | $ | 150 |
Intangible assets, gross |  | $ | 5,778 |  |  | $ | 5,778 |
Accumulated amortization |  | $ | (1,800 | ) |  | $ | (1,642 | )
Intangible assets, net |  | $ | 3,978 |  |  | $ | 4,136 |

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