Note 5 - Stock Purchase Warrants (Details Textual) - The 2022 Sales Incentive Warrants [Member] |
Dec. 31, 2022
$ / shares
shares
|
|---|---|
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares | 250,000 |
| Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares | $ 1 |
| Distribution Partner [Member] | |
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares | 200,000 |
| Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares | $ 1.5 |