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Business Segments And Geographic Information (Schedule Of Sales From External Customers And Long-Lived Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total net sales $ 1,838,451 $ 1,513,073 $ 1,329,661
Total long-lived assets - net 213,717 188,562 178,283
U.S. [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total net sales 857,990 766,067 698,822
Total long-lived assets - net 124,102 108,951 105,165
Europe [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total net sales 492,125 402,056 361,774
Total long-lived assets - net 63,433 68,756 61,766
Other Countries [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total net sales 488,336 344,950 269,065
Total long-lived assets - net $ 26,182 $ 10,855 $ 11,352