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Summary of Significant Accounting Policies (Schedule of Inventory, Current) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Summary of Significant Accounting Policies [Abstract]    
Raw materials $ 41,767us-gaap_InventoryRawMaterials $ 47,099us-gaap_InventoryRawMaterials
Work-in-progress 8,779us-gaap_InventoryWorkInProcess 10,622us-gaap_InventoryWorkInProcess
Finished goods 20,707us-gaap_InventoryFinishedGoods 21,807us-gaap_InventoryFinishedGoods
Total inventories, net $ 71,253us-gaap_InventoryNet $ 79,528us-gaap_InventoryNet