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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block] |
|  | December 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Cash and cash equivalents |  | $ | 430 |  |  | $ | 3,130 |
Restricted cash included in other assets |  |  | 477 |  |  |  | 476 |
Cash and cash equivalents, discontinued operations |  |  | - |  |  |  | (206 | )
Total cash, cash equivalents, and restricted cash in the consolidated statements of cash flows |  | $ | 907 |  |  | $ | 3,400 |
Disaggregation of Revenue [Table Text Block] |
|  | For the Years Ended December 31, |
|  | 2024 |  |  | 2023 |
Avenova Spray |  | $ | 8,673 |  |  | $ | 7,805 |
NeutroPhase |  |  | - |  |  |  | 1,377 |
Other products |  |  | 1,074 |  |  |  | 1,273 |
Total product revenue, net |  |  | 9,747 |  |  |  | 10,455 |
Other revenue, net |  |  | 34 |  |  |  | - |
Total sales, net |  | $ | 9,781 |  |  | $ | 10,455 |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | December 31, |  |  | December 31, |
Major distribution partner |  | 2024 |  |  | 2023 |
Major U.S. Retailer A |  | $ | 194 |  |  | $ | 148 |
Avenova Spray Pharmacy Distributor A |  |  | 46 |  |  |  | * |
Avenova Spray Pharmacy Distributor B |  |  | 39 |  |  |  | 93 |
Avenova Spray Pharmacy Distributor C |  |  | 39 |  |  |  | * |
Chongqing Pioneer Pharma Holdings Limited |  |  | * |  |  |  | 243 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | As of December 31, |
|  | 2024 |  |  | 2023 |
Common stock equivalent of Series B Non-Voting Convertible Preferred Stock (the “Series B Preferred Stock”) |  |  | 15,065 |  |  |  | 640,800 |
Common stock equivalent of Series C Non-Voting Convertible Preferred Stock (the “Series C Preferred Stock”) |  |  | - |  |  |  | 125,371 |
Stock options |  |  | 6,859 |  |  |  | 3,568 |
Stock warrants |  |  | 10,836,275 |  |  |  | 210,927 |
|  |  | 10,858,199 |  |  |  | 980,666 |

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