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Note 5 - Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Finished goods $ 11,154 $ 10,749
Raw materials 6,763 8,098
Total inventories 17,917 18,847
Current portion 11,954 10,034
Long-term portion $ 5,963 $ 8,813