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Inventories (Schedule of Components of Inventories) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory, Net [Abstract]    
Raw materials $ 45,986 $ 41,202
Work-in-process 20,374 20,077
Finished goods 143,513 133,740
Inventories $ 209,873 $ 195,019