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Inventories
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Inventories INVENTORIES
Our major classes of inventories were as follows as of September 30, 2020 and December 31, 2019 (in thousands):
 September 30, 2020December 31, 2019
Raw materials$3,424 $5,211 
Work in process6,495 6,248 
Finished goods12,987 20,094 
Total inventories$22,906 $31,553