Note 11 - Common stock warrants (Details) |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2021
USD ($)
$ / shares
shares
|
Mar. 31, 2020
shares
|
Dec. 31, 2020
USD ($)
$ / shares
|
|
| Details | |||
| Warrants issued, Average Contractual Life in Years | 17.3 | 17.5 | |
| Weighted Average outstanding warrant exercise price | $ / shares | $ 2.11 | $ 2.11 | |
| Warrants exercised in period, Total | 0 | 0 | |
| Warrants issued in period, Total | 0 | 0 | |
| Warrants issued in period, Intrinsic Value | $ | $ 5,247 | $ 0 | |
| X | ||||||||||
- Definition Represents the Warrants exercised in period, Total (number of shares), during the indicated time period. No definition available.
|
| X | ||||||||||
- Definition Represents the Warrants issued, Average Contractual Life in Years, as of the indicated date. No definition available.
|
| X | ||||||||||
- Definition Represents the monetary amount of Warrants issued in period, Intrinsic Value, as of the indicated date. No definition available.
|
| X | ||||||||||
- Definition Represents the Warrants issued in period, Total (number of shares), during the indicated time period. No definition available.
|
| X | ||||||||||
- Definition Represents the per-share monetary value of Weighted Average outstanding warrant exercise price, as of the indicated date. No definition available.
|
| X | ||||||||||
- References No definition available.
|