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Summary of Significant Accounting Policies (Schedule of Inventory, Current) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Summary of Significant Accounting Policies    
Raw materials $ 67,775 $ 66,357
Work-in-progress 7,005 5,582
Finished goods 15,768 21,510
Total inventories, net $ 90,548 $ 93,449