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Inventories
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories

5. Inventories

 

Inventories consisted of the following:

 

   As of December 31, 
(in thousands)  2019   2018 
Raw materials  $16,220   $10,763 
Work-in-process   2,713    521 
Finished goods   29,485    12,364 
Inventory obsolescence reserve   (790)   (708)
Inventories, net  $47,628   $22,940