Quarterly report pursuant to Section 13 or 15(d)

Inventories, Net (Details)

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Inventories, Net (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Summary of Inventory    
Raw materials $ 1,406 $ 1,769
Work in process 192 37
Finished goods 192 135
Inventories, gross 1,790 1,941
Less: inventory reserves (165) (265)
Inventories, net $ 1,625 $ 1,676