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Note 8 - Goodwill (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Goodwill, Impairment Loss | $ 4,180 | $ 0
DERMAdoctor [Member] | Goodwill and Intangible Asset Impairment [Member] |  |
Goodwill, Impairment Loss | $ 4,200 |

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