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Nature Of Operations And Summary Of Significant Accounting Policies (Schedule Of Inventory) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Nature Of Operations And Summary Of Significant Accounting Policies [Abstract]    
Raw materials $ 248,050 $ 270,191
Work in process 6,992 6,211
Finished goods 289,397 255,273
Total $ 544,439 $ 531,675