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Inventories (Schedule of Inventories) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Inventories [Abstract]    
Raw materials $ 44,926 $ 35,665
Work-in-progress 8,559 7,483
Finished goods 23,512 16,969
Total inventories, net $ 76,997 $ 60,117