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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Inventories [Abstract]    
Raw materials $ 47,840 $ 35,665
Work-in-progress 8,249 7,483
Finished goods 22,554 16,969
Total inventories, net $ 78,643 $ 60,117