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Note 7 - Net Loss Per Share (Details Textual) - $ / shares | Sep. 30, 2025 | Jun. 05, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023 | Mar. 30, 2023
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Series F Preferred Stock [Member] |  |  |  |  |  |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ 3.77 | $ 3.77 | $ 11.17 | $ 11.17 | $ 13.6 | $ 68.4

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- Definition Per share conversion price of preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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