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Note 2 - Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Cash and cash equivalents |  | $ | 5,344 |  |  | $ | 430 |
Restricted cash included in other assets |  |  | 477 |  |  |  | 477 |
Total cash, cash equivalents, and restricted cash in the condensed consolidated statements of cash flows |  | $ | 5,821 |  |  | $ | 907 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Numerator for basic and diluted income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss from continuing operations |  | $ | (1,964 | ) |  | $ | (2,149 | ) |  | $ | (5,294 | ) |  | $ | (4,998 | )
Less: Increase to accumulated deficit due to adjustment to Preferred Stock conversion price |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 380 |
Net loss from continuing operations attributable to common stockholders |  | $ | (1,964 | ) |  | $ | (2,149 | ) |  | $ | (5,294 | ) |  | $ | (5,378 | )
Net income from discontinued operations, net of taxes |  |  | 42 |  |  |  | 564 |  |  |  | 11,042 |  |  |  | 199 |
Net (loss) income |  | $ | (1,922 | ) |  | $ | (1,585 | ) |  | $ | 5,748 |  |  | $ | (5,179 | )
Denominator for (loss) income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding – basic (diluted for net loss) |  |  | 5,818 |  |  |  | 1,155 |  |  |  | 5,564 |  |  |  | 930 |
Effect of dilutive Unsecured Convertible Notes |  |  | — |  |  |  | — |  |  |  | 107 |  |  |  | — |
Weighted average shares outstanding – diluted for net income |  |  | 5,818 |  |  |  | 1,155 |  |  |  | 5,671 |  |  |  | 930 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | As of June 30, |
|  | 2025 |  |  | 2024 |
Common stock equivalent of Series B Non-Voting Convertible Preferred Stock (the “Series B Preferred Stock”) |  |  | 15 |  |  |  | 15 |
Stock options |  |  | 1 |  |  |  | 7 |
Stock warrants |  |  | 4,329 |  |  |  | 225 |
|  |  | 4,345 |  |  |  | 247 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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