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Note 11 - Commitments and Contingencies (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Business Combination, Contingent Consideration, Liability, Total | $ 1,200,000 |  |
Payment for Contingent Consideration Liability, Investing Activities | 250,000 | $ (0) |
ATEC Acquisition [Member] |  |  |
Business Combination, Contingent Consideration, Liability, Total |  | 1,450,000 | $ 1,450,000
Payment for Contingent Consideration Liability, Investing Activities | 250,000 |  |
Mojave Groundwater Bank [Member] |  |  |
Deferred Revenue | $ 625,000 | $ 625,000 |

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