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Note 7 - Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finished goods $ 10,749 $ 9,737
Raw materials 8,098 8,510
Total inventories 18,847 18,247
Current Portion 10,034 10,653
Long-term portion $ 8,813 $ 7,594