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Note 2 - Inventory - Inventory (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Finished goods $ 1,234     $ 1,361
Raw materials 1,387     562
Inventory, Net, Total $ 2,621 $ 2,833 $ 2,907 $ 1,923