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Note 12 - Basic and Diluted Net Loss Per Share - Anti-dilutive Securities (Details) - shares | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Anti-dilutive securities (in shares) | 1,781,454 | 753,952
Warrant [Member] |  |
Anti-dilutive securities (in shares) | 921,381 | 335,214
Share-Based Payment Arrangement, Option [Member] |  |
Anti-dilutive securities (in shares) | 476,741 | 134,333
Restricted Stock Units (RSUs) [Member] |  |
Anti-dilutive securities (in shares) | 10,000 |
Deferred Stock Units [Member] |  |
Anti-dilutive securities (in shares) | 33,332 |
Stock Issuable Pursuant to Inducement Agreement [Member] |  |
Anti-dilutive securities (in shares) | 340,000 |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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