Note 11 - Common stock warrants (Details) |
6 Months Ended | ||
|---|---|---|---|
|
Jun. 30, 2017
USD ($)
$ / shares
shares
|
Jun. 30, 2016
shares
|
Dec. 31, 2016
USD ($)
$ / shares
|
|
| Details | |||
| Warrants issued, Average Contractual Life in Years | 21.01 | 21.49 | |
| Weighted Average outstanding warrant exercise price | $ / shares | $ 2.10 | $ 2.02 | |
| Warrants exercised in period, Total | 1,424,883 | 1,218,650 | |
| Warrants issued in period, Total | 0 | 0 | |
| Warrants issued in period, Intrinsic Value | $ | $ 0 | $ 1,395 | |
| 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.
|