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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Inventories [Abstract]    
Raw materials $ 63,726 $ 66,357
Work-in-progress 7,210 5,582
Finished goods 17,208 21,510
Total inventories, net $ 88,144 $ 93,449