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
Inventory Disclosure [Abstract]    
Raw materials $ 2,735 $ 2,310
Work in progress 261 331
Finished goods 346 730
Inventories, net $ 3,342 $ 3,371