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2. Inventories
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
2. Inventories

Inventory consists of the following:

 

   

September 30,

2019

   

December 31,

2018

 
Raw materials   $ 979     $ 3,647  
Work-in-progress     1,285       1,327  
Finished goods     1,257       1,155  
Total inventories   $ 3,521     $ 6,129  

 

As of September 30, 2019 and December 31, 2018, the Company recognized a lower of cost or net realizable value impairment of $0.1 million and $0.2 million respectively, related to inventory.