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Note 12 – Common Stock (Tables) | 3 Months Ended
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Jul. 31, 2024
Equity [Abstract] |
Schedule of Common Stock Outstanding Roll Forward [Table Text Block] |
Description of Shares |  | Shares Issued
Shares outstanding as of April 30, 2023 |  |  | 54,568,065 |
Vesting of restricted stock to employees, net of shares withheld of 27,189 to pay taxes |  |  | 192,742 |
Vesting of restricted stock to Board of Directors |  |  | 252,214 |
Vesting of restricted stock to consultants |  |  | 1,761 |
Conversion of preferred stock |  |  | 818,334 |
Issuance of common stock through ATM facilities |  |  | 53,235 |
Issuance of common stock through public offering |  |  | 18,400,000 |
Exercise of stock options |  |  | 3,000 |
Shares outstanding as of April 30, 2024 |  |  | 74,289,351 |
Vesting of restricted stock to employees, net of shares withheld of 126,828 to pay taxes |  |  | 231,855 |
Vesting of restricted stock to Board of Directors |  |  | 61,447 |
Exercise of warrants |  |  | 307,595 |
Shares outstanding as of July 31, 2024 |  |  | 74,890,248 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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