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Note 21 - Segment Reporting - Financial Information by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer, Including Assessed Tax	$ 8,421	$ 9,934	$ 6,599
Total of Revenue	100.00%
Gross margin	$ 5,645	$ 5,964	$ 4,861
Total of gross margin	100.00%
Optical and Wound Care [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 7,834
Total of Revenue	93.00%
Gross margin	$ 5,336
Total of gross margin	95.00%
Skincare [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 587
Total of Revenue	7.00%
Gross margin	$ 309
Total of gross margin	5.00%

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