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INVENTORY - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 36,065 $ 25,920
Work-in-process 3,222 7,987
Finished goods 45,236 30,046
Inventory $ 84,523 $ 63,953