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Inventory (Schedule of Inventory) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials $ 10,220 $ 9,120
Work in process 60,110 35,868
Finished goods 12,215 14,352
Deferred costs 27,352 11,014
Total Inventories $ 109,897 $ 70,354