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Note 20 - Segment Reporting - Financial Information by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue from Contract with Customer, Including Assessed Tax $ 2,629 $ 1,807
Total sales, net 2,629 1,807
Operating Loss (2,382) (1,520)
Optical and Wound Care [Member]    
Revenue from Contract with Customer, Including Assessed Tax 1,738 1,807
Total sales, net 1,738 1,807
Operating Loss (2,039) (1,520)
Skincare [Member]    
Revenue from Contract with Customer, Including Assessed Tax 891 0
Total sales, net 891 $ 0
Operating Loss $ (343)