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Inventories (Schedule of Inventories) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Inventories [Abstract]    
Raw materials $ 52,331 $ 47,099
Work-in-progress 11,429 10,622
Finished goods 33,366 21,807
Total inventories, net $ 97,126 $ 79,528