Note 7 - Stockholders' Deficit - Shares Reserved for Future Issuance (Details) - shares |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Common stock options issued and outstanding (in shares) | 19,222,032 | 19,222,032 |
| Total (in shares) | 127,294,000 | 127,294,000 |
| Warrants Reserve for Series A Convertible Preferred Stock [Member] | ||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 330,000 | 330,000 |
| Series A Preferred Stock [Member] | ||
| Series A convertible preferred stock (in shares) | 56,673,000 | 56,673,000 |
| Series B Preferred Stock [Member] | ||
| Series A convertible preferred stock (in shares) | 51,069,000 | 51,069,000 |