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Note 2 - Income (loss) Per Share | 9 Months Ended
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Sep. 30, 2024
Notes to Financial Statements |
Earnings Per Share [Text Block] | 2. Income (loss) per share Basic income (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares outstanding and restricted stock units ("RSUs") that have vested but not been delivered during the period. Diluted income (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock are exercised or converted into common stock and is calculated using the treasury stock method for stock options, RSUs, restricted stock, warrants (including the Pre-Funded Warrants, as defined in Note 8 below) and deferred common stock. Stock equivalent shares are excluded from the calculation in loss periods, as their effects would be anti-dilutive. For the three and nine months ended September 30, 2024 and 2023, basic and diluted income (loss) per share were as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (7,944 | ) |  | $ | (33,627 | ) |  | $ | (25,847 | ) |  | $ | (61,319 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding |  |  | 16,164,301 |  |  |  | 13,526,824 |  |  |  | 14,495,341 |  |  |  | 13,466,371 |
Weighted average restricted shares vested not delivered |  |  | 287,972 |  |  |  | 286,599 |  |  |  | 287,912 |  |  |  | 285,539 |
Total basic weighted average shares outstanding |  |  | 16,452,273 |  |  |  | 13,813,423 |  |  |  | 14,783,253 |  |  |  | 13,751,910 |
Dilutive effect of assumed conversion of restricted stock units |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total diluted weighted average shares outstanding |  |  | 16,452,273 |  |  |  | 13,813,423 |  |  |  | 14,783,253 |  |  |  | 13,751,910 |
Basic and diluted income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.48 | ) |  | $ | (2.43 | ) |  | $ | (1.75 | ) |  | $ | (4.46 | )
Diluted |  | $ | (0.48 | ) |  | $ | (2.43 | ) |  | $ | (1.75 | ) |  | $ | (4.46 | )
Based on exercise prices compared to the average stock prices for the three and nine months ended September 30, 2024 and 2023, certain stock equivalents, including RSUs and stock options, have been excluded from the diluted weighted average share calculations due to their anti-dilutive nature.
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Restricted stock units |  |  | 993,623 |  |  |  | 916,563 |  |  |  | 993,623 |  |  |  | 916,563 |
Stock options |  |  | 397,668 |  |  |  | 305,167 |  |  |  | 397,668 |  |  |  | 305,167 |
Total anti-dilutive securities |  |  | 1,391,291 |  |  |  | 1,221,730 |  |  |  | 1,391,291 |  |  |  | 1,221,730 |

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