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Note 21 - Loss Per Share | 12 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Earnings Per Share [Text Block] | 21. Loss per share Basic income (loss) per share attributable to Company stockholders is calculated by dividing net income (loss) attributable to the Company by the weighted-average number of common shares outstanding for the period. Diluted income (loss) per share attributable to Company stockholders is computed giving effect to all potential dilutive common stock, unless there is a net loss for the period. We apply the treasury stock method to determine the dilutive weighted average common shares represented by unvested restricted stock units and ESPP shares. The calculation of basic and diluted loss per share attributable to the Company stockholder for years ended December 31, 2022, 2021 and 2020 respectively, are as follows (in thousands, except shares outstanding and per share amounts):
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Net loss |  | $ | (20,145 | ) |  | $ | (131,891 | ) |  | $ | (307,045 | )
Basic and diluted weighted average number of shares outstanding |  |  | 109,072,761 |  |  |  | 80,525,694 |  |  |  | 70,889,753 |
Total basic and diluted loss per share |  | $ | (0.18 | ) |  | $ | (1.64 | ) |  | $ | (4.33 | )
Approximately 0.3 million shares of unvested restricted stock units and stock to be issued pursuant to the ESPP have been excluded from the computation of diluted loss per share as the effect would be anti-dilutive for the year ended December 31, 2022. Additionally, since the conditions upon which shares were issuable for outstanding warrants and stock options were not satisfied as of December 31, 2020, assuming the respective balance sheet date was at the end of the contingency period, they had not been included in determining the number of anti-dilutive shares.

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