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Inventory - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 18,979 $ 6,635
Work in process 12,820 12,571
Finished goods 9,643 5,762
Total inventory $ 41,442 $ 24,968