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2. Inventories
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Inventories

Inventories consist of the following:

 

    As of  
    December 31, 2020     December 31, 2019  
Raw materials   $ 1,382     $ 2,566  
Work-in-progress     1,266       1,455  
Finished goods     1,321       2,497  
Total inventories   $ 3,969     $ 6,518  

 

As of December 31, 2020 and December 31, 2019, the Company recognized a lower of cost or market reserve of $0.7 million and $0.1 million respectively, related to inventory.