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Note 6 - Inventory - Summary of Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Raw materials and supplies $ 1,446 $ 1,179
Finished goods 2,861 2,682
Less: Reserve for excess and obsolete inventory (522) (641)
Total inventory, net $ 3,785 $ 3,220