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Note 8 - Capital Stock and Stock-based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Notes Tables |
Schedule Of Stock Options And Restricted Stock Units Activity Roll forward [Table Text Block] |
|  | Stock Options |  |  | Restricted Stock Units |  |  | Market Condition RSU's |
|  |  |  |  |  | Weighted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Stock |  |  | Average |  |  | Restricted |  |  |  |  |  |  | Market |  |  |  |  |
|  | Options |  |  | Exercise |  |  | Stock Units |  |  | Grant Date |  |  | Condition RSU's |  |  | Grant Date |
|  | Outstanding |  |  | Price |  |  | Outstanding |  |  | Fair Value |  |  | Outstanding |  |  | Fair Value |
Balance at December 31, 2020 |  |  | 2,637,339 |  |  | $ | 3.51 |  |  |  | 1,560,461 |  |  | $ | 2.44 |  |  |  | 813,031 |  |  |  | 2.12 |
Granted |  |  | - |  |  |  | - |  |  |  | 793,968 |  |  |  | 4.65 |  |  |  | 293,509 |  |  |  | 4.61 |
Exercised |  |  | (534,862 | ) |  |  | 3.78 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Vested (RSUs) |  |  | - |  |  |  | - |  |  |  | (799,264 | ) |  |  | 2.48 |  |  |  | (396,274 | ) |  |  | 2.09 |
Cancelled/Forfeited |  |  | (651,368 | ) |  |  | 4.24 |  |  |  | (57,215 | ) |  |  | 3.65 |  |  |  | (6,179 | ) |  |  | 2.98 |
Performance Factor Adjustment |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 163,216 |  |  |  | 2.98 |
Balance at September 30, 2021 |  |  | 1,451,109 |  |  | $ | 3.12 |  |  |  | 1,497,950 |  |  | $ | 3.54 |  |  |  | 867,303 |  |  | $ | 3.13 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in thousands) |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Cost of revenues |  | $ | 32 |  |  | $ | 19 |  |  | $ | 83 |  |  | $ | 43 |
Sales and marketing expenses |  |  | 149 |  |  |  | 92 |  |  |  | 373 |  |  |  | 205 |
General and administrative expenses |  |  | 790 |  |  |  | 908 |  |  |  | 2,593 |  |  |  | 2,249 |
Research and development expenses |  |  | 33 |  |  |  | 60 |  |  |  | 87 |  |  |  | 144 |
Total stock-based compensation expenses |  | $ | 1,004 |  |  | $ | 1,079 |  |  | $ | 3,136 |  |  | $ | 2,641 |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in thousands) |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Basic |  |  | 40,754 |  |  |  | 38,920 |  |  |  | 40,202 |  |  |  | 38,540 |
Dilutive effect of equity awards |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Diluted |  |  | 40,754 |  |  |  | 38,920 |  |  |  | 40,202 |  |  |  | 38,540 |
Monte-Carlo Valuation Simulation [Member] |
Notes Tables |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2021 |
Volatility |  |  | 65.1 | %
Risk-free interest rate |  |  | 0.3 | %
Correlation coefficient |  |  | 35.7 | %
Dividend yield |  |  | - | %

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