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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Table Text Block] |
|  | December 31, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Cash and cash equivalents |  | $ | 3,130 |  |  | $ | 5,362 |
Restricted cash included in other assets |  |  | 476 |  |  |  | 484 |
Total cash, cash equivalents, and restricted cash in the consolidated statements of cash flows |  | $ | 3,606 |  |  | $ | 5,846 |
Disaggregation of Revenue [Table Text Block] |
|  | For the Years Ended December 31, |
|  | 2023 |  |  | 2022 |
Avenova Spray |  | $ | 7,805 |  |  | $ | 7,651 |
DERMAdoctor |  |  | 3,552 |  |  |  | 4,155 |
NeutroPhase |  |  | 1,377 |  |  |  | 976 |
Other products |  |  | 1,953 |  |  |  | 1,592 |
Total product revenue, net |  |  | 14,687 |  |  |  | 14,374 |
Other revenue, net |  |  | 39 |  |  |  | 30 |
Total sales, net |  | $ | 14,726 |  |  | $ | 14,404 |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | December 31, |  |  | December 31, |
Major distribution partner |  | 2023 |  |  | 2022 |
Chongqing Pioneer Pharma Holdings Limited |  |  | 32 | % |  |  | 11 | %
Major U.S. Retailer A |  |  | 21 | % |  |  | * | %
Avenova Spray Pharmacy Distributor A |  |  | 12 | % |  |  | 30 | %
Major U.S. Retailer B |  |  | * | % |  |  | 15 | %
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | As of December 31, |
|  | 2023 |  |  | 2022 |
Common stock equivalent of Series B Non-Voting Convertible Preferred Stock (the “Series B Preferred Stock”) |  |  | 22,428,000 |  |  |  | 1,847,580 |
Common stock equivalent of Series C Non-Voting Convertible Preferred Stock (the “Series C Preferred Stock”) |  |  | 4,388,000 |  |  |  | 357,750 |
Stock options |  |  | 124,897 |  |  |  | 131,954 |
Stock warrants |  |  | 7,382,447 |  |  |  | 2,305,519 |
|  |  | 34,323,344 |  |  |  | 4,642,803 |

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