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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Years ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (97,217 | ) |  | $ | (76,246 | ) |  | $ | (32,385 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Shares used in computing net loss per share, basic and diluted |  |  | 41,932 |  |  |  | 40,202 |  |  |  | 39,405 |
Net loss per share, basic and diluted |  | $ | (2.32 | ) |  | $ | (1.90 | ) |  | $ | (0.82 | )
Dilutive common stock options excluded from net loss per share, diluted |  |  | 2,123 |  |  |  | 2,055 |  |  |  | 2,211 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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