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Other Current Assets | 9 Months Ended
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Jan. 31, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Other Current Assets | (5) Other Current Assets Other current assets consisted of the following at January 31, 2024 and April 30, 2023: Schedule of Other Current Assets
|  | January 31, 2024 |  |  | April 30, 2023 |
|  | (in thousands) |
Proceeds receivable from sale of New Jersey net operating loss & tax credits |  | $ | 1,234 |  |  | $ | — |
Prepaid inventory materials |  |  | 1,088 |  |  |  | 58 |
Prepaid insurance |  |  | 374 |  |  |  | 358 |
Prepaid software & licenses |  |  | 308 |  |  |  | 190 |
Prepaid sales & marketing |  |  | 138 |  |  |  | 122 |
Prepaid project costs |  |  | 617 |  |  |  | 46 |
Prepaid expenses- other |  |  | 168 |  |  |  | 220 |
Total other current assets |  | $ | 3,927 |  |  | $ | 994 |

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