Note 6 - Common Stock, Preferred Stock, Warrants and Options - Summary of Warrants (Details) - $ / shares |
12 Months Ended | |
---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 0.052 | $ 6,589 |
Class of Warrant or Right, Outstanding | 570,000 | 1,061 |
Warrant exercisable, weighted average remaining contractual life (Year) | 4 years 306 days | |
Warrant exercisable, number of warrants (in shares) | 570,000 |