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Note 11 - Share-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  |  |  |  |  | Weighted Average |
|  | Number of |  |  | Grant-Date Fair Value |
|  | Shares |  |  | Per Share |
Unvested as of December 31, 2020 |  |  | 1,332,884 |  |  | $ | 1.86 |
Granted |  |  | 393,592 |  |  | $ | 4.82 |
Vested |  |  | (682,411 | ) |  | $ | 1.93 |
Unvested as of June 30, 2021 |  |  | 1,044,065 |  |  | $ | 2.75 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Six Months Ended June 30, |
|  | 2021 |  |  | 2020 |
Share-based compensation expense: |  |  |  |  |  |  |  |
Cost of sales |  | $ | 76 |  |  | $ | 54 |
Selling, general and administrative |  |  | 588 |  |  |  | 502 |
Net effect of share-based compensation expense on net income |  | $ | 664 |  |  | $ | 556 |
Reduction in earnings per share: |  |  |  |  |  |  |  |
Basic earnings per share |  | $ | 0.04 |  |  | $ | 0.03 |
Diluted earnings per share |  | $ | 0.04 |  |  | $ | 0.03 |

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