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Note 11 - Fair Value Measurements - Range of Variables to Calculate Fair Value (Details) - Marathon SAFE Note Liability [Member] - Measurement Input, Discount Rate [Member] | Mar. 31, 2026 | Mar. 31, 2025 | Feb. 28, 2025
--- | --- | --- | ---
Derivative, measurement input | 0.35 | 0.35 | 35
Minimum [Member] |  |  |
Derivative, measurement input | 0.25 | 0.25 |
Maximum [Member] |  |  |
Derivative, measurement input | 0.75 | 0.84 |

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- Definition Value of input used to measure derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Details
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- Details
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- Details
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