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INVESTMENT IN DEBT AND EQUITY SECURITIES (Details - Series G Preferred Stock and Preferred Stock Warrants) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2026 | Jan. 31, 2025 | Jan. 31, 2026 | Jan. 31, 2025
DisclosureLineElements [Line Items] |  |  |  |
Investment, beginnning balance |  |  | $ 22,474,000 |
Change in fair value | $ 1,725,000 | $ (3,031,000) | (3,485,000) | $ (1,642,050)
Investment, ending balance | 22,472,000 |  | 22,472,000 |
QCLS Series G Preferred Stock [Member] |  |  |  |
DisclosureLineElements [Line Items] |  |  |  |
Investment, beginnning balance |  |  | 22,474,000 |
Change in fair value |  |  | (5,127,000) |
Investment, ending balance | 17,347,000 |  | 17,347,000 |
QCLS Series G Warrants [Member] | QCLS [Member] |  |  |  |
DisclosureLineElements [Line Items] |  |  |  |
Investment, beginnning balance |  |  | 8,618,000 |
Change in fair value |  |  | (1,652,000) |
Investment, ending balance | $ 6,966,000 |  | $ 6,966,000 |

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