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Note 2 - Sale and Deconsolidation of GMI and Discontinued Operations - Consideration Received (Details) (Parentheticals) - USD ($) | Mar. 17, 2023 | Aug. 09, 2023
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Cash for stock | $ 3,000,000 |
Discount Rate of Project Revenue | 40.80% | 40.75%
Estimated duration (Year) | 7 years |

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