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Inventory (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventory consists of the following:
DECEMBER 31,
(in thousands)20202019
Raw materials$1,875 $1,400 
Work-in-process21,648 13,414 
Finished goods3,536 6,240 
Total inventory$27,059 $21,054