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Inventories - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials, consumables and supplies, net $ 76,637 $ 69,168
Work in process 35 148
Finished goods, net 91,808 95,483
Total $ 168,481 $ 164,799