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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Classification of Inventories [Abstract]    
Raw materials $ 2,552 $ 1,719
Work in process 2,703 1,807
Finished goods 1,221 940
Total Inventories, net $ 6,476 $ 4,466