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Note 19 - Segment Reporting - Financial Information by Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Total sales, net $ 3,045 $ 2,133 $ 5,674 $ 3,940
Operating Loss (2,152) (1,859) (4,534) (3,379)
Optical and Wound Care [Member]        
Total sales, net 2,453 2,133 4,191 3,940
Operating Loss (1,308) (1,859) (3,347) (3,379)
Skincare [Member]        
Total sales, net 592 0 1,483 0
Operating Loss $ (844) $ 0 $ (1,187) $ 0