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Note 7 - Net Loss Per Share (Tables) | 3 Months Ended
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Mar. 31, 2026
Notes Tables |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2026 |  |  | 2025 |
Warrants converted into common stock |  |  | 193,481 |  |  |  | 208,744 |
Common stock options |  |  | 11,119,350 |  |  |  | 13,493,432 |
Estimated shares issuable under the employee stock purchase plan |  |  | 31,577 |  |  |  | 26,532 |
Restricted stock units |  |  | 200,000 |  |  |  | — |
Total |  |  | 11,544,408 |  |  |  | 13,728,708 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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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