Note 11 - Common stock warrants: Schedule of Series E, F, G and H warrants (Details) - Series H $7.00 exercise price - shares |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
|
| Warrants Outstanding, Starting Balance | 689,159 | 689,159 |
| Warrants Issued | 0 | 0 |
| Warrants Exercised | 0 | 0 |
| Warrants Outstanding, Ending Balance | 689,159 | 689,159 |
| X | ||||||||||
- Definition Represents the Warrants Exercised (number of shares), during the indicated time period. No definition available.
|
| X | ||||||||||
- Definition Represents the Warrants Issued (number of shares), during the indicated time period. No definition available.
|
| X | ||||||||||
- Definition Represents the Warrants Outstanding (number of shares), as of the indicated date. No definition available.
|
| X | ||||||||||
- Details
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