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Inventory (Tables)
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventory Inventory consisted of the following (in thousands):
 March 31, 2021December 31, 2020
Raw materials$477 $314 
Work in process6,226 4,316 
Finished goods4,879 5,731 
 Inventory$11,582 $10,361