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Note 15 - Share-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2023
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Research and development expenses |  | $ | 496 |  |  | $ | 673 |  |  | $ | 1,021 |  |  | $ | 1,398 |
Selling, general and administrative expenses |  |  | 1,726 |  |  |  | 2,150 |  |  |  | 3,487 |  |  |  | 4,374 |
Total share-based compensation expense |  | $ | 2,222 |  |  | $ | 2,823 |  |  | $ | 4,508 |  |  | $ | 5,772 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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