Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 1,442 $ 1,724
Work in progress 177 18
Finished goods 132 236
Inventories $ 1,751 $ 1,978