Note 8 - Common Stock Warrant Liabilities (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Jan. 05, 2024 |
Mar. 31, 2024 |
Mar. 31, 2023 |
Jan. 31, 2024 |
Dec. 31, 2023 |
Jan. 31, 2023 |
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 29.5 | $ 32.42 | ||||
| Fair Value Adjustment of Warrants | $ 116 | $ 878 | ||||
| January 2024 Warrant Inducement [Member] | ||||||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 25,871 | |||||
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 22.545 | |||||
| January 2023 Warrants [Member] | ||||||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 25,871 | |||||
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 22.545 | $ 116.25 | ||||
| Warrants and Rights Outstanding | $ 300 | |||||
| Fair Value Adjustment of Warrants | $ 100 | |||||
| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| 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
|
| X | ||||||||||
- Details
|