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Note 2 - Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2024
Notes Tables |
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
Exercise price per warrant |  | $ | 33.00 |
Conversion rate - common shares per warrant |  |  | 1.50 |
Closing price of common stock |  | $ | 23.72 |
Volatility |  |  | 75 | %
Risk-free interest rate |  |  | 5.40 | %
Expected life of option (in years) |  |  | 0.3 |
Dividend yield |  | zero |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended |  |  | Nine months ended |
|  | September 30, |  |  | September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Numerator, basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (27,943 | ) |  | $ | (25,651 | ) |  | $ | 3,255 |  |  | $ | (76,298 | )
Denominator, basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 47,976 |  |  |  | 42,002 |  |  |  | 45,734 |  |  |  | 41,845 |
Net income (loss) per share, basic |  | $ | (0.58 | ) |  | $ | (0.61 | ) |  | $ | 0.07 |  |  | $ | (1.82 | )
Numerator, diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (27,943 | ) |  | $ | (25,651 | ) |  | $ | 3,255 |  |  | $ | (76,298 | )
Adjustment for change in fair value of warrant liabilities |  |  | — |  |  |  | — |  |  |  | (43,793 | ) |  |  | — |
Adjusted numerator, diluted |  | $ | (27,943 | ) |  | $ | (25,651 | ) |  | $ | (40,538 | ) |  | $ | (76,298 | )
Denominator, diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 47,976 |  |  |  | 42,002 |  |  |  | 45,734 |  |  |  | 41,845 |
Dilutive effect of common stock warrants |  |  | — |  |  |  | — |  |  |  | 367 |  |  |  | — |
Weighted average dilutive common shares |  |  | 47,976 |  |  |  | 42,002 |  |  |  | 46,101 |  |  |  | 41,845 |
Net income (loss) per share, diluted |  | $ | (0.58 | ) |  | $ | (0.61 | ) |  | $ | (0.88 | ) |  | $ | (1.82 | )
Dilutive common stock options excluded from net income (loss) per share, diluted |  |  | 2,949 |  |  |  | 1,780 |  |  |  | 2,772 |  |  |  | 1,938 |
Dilutive Performance Awards excluded from net income (loss) per share, diluted |  |  | 7 |  |  |  | 7 |  |  |  | 7 |  |  |  | 7 |

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