Note 8 - Warrants - Warrant Activity (Details) |
9 Months Ended |
|---|---|
|
Sep. 30, 2018
$ / shares
shares
| |
| Balance (in dollars per share) | $ / shares | |
| Balance, weighted average exercise price (in shares) | shares | |
| Warrants issued (in dollars per share) | $ / shares | $ 0.01 |
| Warrants issued, weighted average exercise price (in shares) | shares | 2,560,956 |
| Warrants exercised (in dollars per share) | $ / shares | $ 0.01 |
| Warrants exercised, weighted average exercise price (in shares) | shares | (289,550) |
| Balance (in dollars per share) | $ / shares | $ 0.01 |
| Balance, weighted average exercise price (in shares) | shares | 2,271,406 |
| X | ||||||||||
- Definition The number of warrants or rights exercised during period. No definition available.
|
| X | ||||||||||
- Definition Exercise price per share of warrants or rights exercised during period. No definition available.
|
| X | ||||||||||
- Definition The number of warrants or rights issued during period. No definition available.
|
| X | ||||||||||
- Definition Exercise price per share of warrants or rights issued during period. No definition available.
|
| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|