Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Inventory - Inventory (Details)

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Note 5 - Inventory - Inventory (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Finished goods $ 2 $ 2
Work in process 245 247
Raw materials 415 842
Total inventory $ 662 $ 1,091