Note 9 - Share-based Compensation - Schedule of Stock-based Compensation (Details) - USD ($) $ in Thousands |
3 Months Ended | |
---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
|
Total stock-based compensation | $ 779 | $ 746 |
Cost of Sales [Member] | ||
Total stock-based compensation | 81 | 82 |
Selling and Marketing Expense [Member] | ||
Total stock-based compensation | 159 | 158 |
General and Administrative Expense [Member] | ||
Total stock-based compensation | 454 | 419 |
Research and Development Expense [Member] | ||
Total stock-based compensation | $ 85 | $ 87 |