Note 6 - Inventory (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2021 |
|
| Finished Goods [Member] | ||
| Inventory, Allocated to Research and Development Expense | $ 1,000 | $ 5,000 |
| X | ||||||||||
- Definition Represents finished goods inventory allocated to research and development expense during the period. No definition available.
|
| X | ||||||||||
- Details
|