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Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 126,495 $ 134,467
Work-in-process 24,592 17,602
Raw materials 76,689 73,629
Total Inventories $ 227,776 $ 225,698