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Inventories (Tables)
 9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories consist of the following as of September 30, 2020 and December 31, 2019 (in thousands):

 

 

 

September 30, 2020

 

 

December 31, 2019

 

Raw materials

 

$

927

 

 

 

—

 

Finished goods

 

 

419

 

 

 

—

 

 

 

$

1,346

 

 

$

—