Note 6 - Stockholders' Equity and Equity-linked Instruments - Schedule of Warrant Activity (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|||||
| Change in fair value | $ (1,667,000) | $ (1,040,000) | $ (906,000) | $ (1,040,000) | ||||
| Warrants Issued With Placement Agent Agreement [Member] | ||||||||
| Beginning balance | 2,332,000 | 2,804,000 | [1] | 1,571,000 | 2,804,000 | [1] | ||
| Change in fair value | (1,667,000) | (1,040,000) | (906,000) | (1,040,000) | ||||
| Beginning balance | $ 665,000 | $ 1,764,000 | $ 665,000 | $ 1,764,000 | ||||
| ||||||||
| X | ||||||||||
- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|