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Inventory (Tables)
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Inventory
Inventory consists of the following (in thousands):
June 30, 2020December 31, 2019
Raw materials$1,681  $1,673  
Work-in-process8,555  8,267  
Finished goods2,348  2,725  
Total inventory$12,584  $12,665