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Note 6 - Stock Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2024
Notes Tables |
Share-Based Payment Arrangement, Activity [Table Text Block] |
|  | Outstanding |  |  | Exercisable |
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Number of Options |  |  | Weighted Average Exercise Price |
Options outstanding and exercisable, December 31, 2022 |  |  | 16,668 |  |  | $ | 143.62 |  |  |  | 10,000 |  |  | $ | 239.38 |
Vested |  |  | — |  |  |  | — |  |  |  | 3,336 |  |  |  | 48.75 |
Expired |  |  | (6,668 | ) |  |  | 285.89 |  |  |  | (6,668 | ) |  |  | 285.89 |
Options outstanding and exercisable, December 31, 2023 |  |  | 10,000 |  |  |  | 48.75 |  |  |  | 6,668 |  |  |  | 48.75 |
Vested |  |  | — |  |  |  |  |  |  |  | 3,332 |  |  |  | 48.75 |
Options outstanding and exercisable, June 30, 2024 |  |  | 10,000 |  |  | $ | 48.75 |  |  |  | 10,000 |  |  | $ | 48.75 |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  | Restricted Stock Awards |  |  | Restricted Stock Units |
|  | Shares |  |  | Weighted Average Grant Price |  |  | Shares |  |  | Weighted Average Grant Price |
Unvested shares, December 31, 2022 |  |  | 42 |  |  | $ | 235.87 |  |  |  | — |  |  | $ | — |
Granted |  |  | — |  |  |  |  |  |  |  | 177,564 |  |  |  | 2.14 |
Vested |  |  | (42 | ) |  |  | 235.87 |  |  |  | (177,564 | ) |  |  | 2.14 |
Unvested Shares, December 31, 2023 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Unvested Shares, June 30, 2024 |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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