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Note 20 - Segment Reporting - Financial Information by Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Revenue from Contract with Customer, Including Assessed Tax | $ 14,404 | $ 10,204
Operating loss | $ 14,417 | $ 8,862
Operating loss, percentage | 100.00% | 100.00%
Product [Member] |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 14,374 | $ 10,180
Total of Revenue | 100.00% | 100.00%
Optical and Wound Care [Member] |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 10,239 | $ 9,555
Operating loss | $ 5,645 | $ 8,682
Operating loss, percentage | 39.00% | 98.00%
Optical and Wound Care [Member] | Product [Member] |  |
Total of Revenue | 71.00% | 94.00%
Skin Care [Member] |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 4,165 | $ 649
Operating loss | $ 8,772 | $ 180
Operating loss, percentage | 61.00% | 2.00%
Skin Care [Member] | Product [Member] |  |
Total of Revenue | 29.00% | 6.00%

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