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Inventories - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Finished goods $ 173,994 $ 149,298
Work in process 18,415 12,732
Raw materials 14,107 14,600
Inventories, net $ 206,516 $ 176,630