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Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2012     $ 5,711  
Other comprehensive income (loss) before reclassifications     (984)  
Amounts reclassified from other comprehensive income     (317)  
Net current period other comprehensive (loss) income (1,152) (238) (1,301) (296)
Balance as of June 30, 2013 4,410   4,410  
Foreign Currency Translation Adjustments [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2012     5,880  
Other comprehensive income (loss) before reclassifications     (1,991)  
Net current period other comprehensive (loss) income     (1,991)  
Balance as of June 30, 2013 3,889   3,889  
Unrealized Gains (Losses) on Cash Flow Hedges [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2012     (169)  
Other comprehensive income (loss) before reclassifications     1,007  
Amounts reclassified from other comprehensive income     (317)  
Net current period other comprehensive (loss) income     690  
Balance as of June 30, 2013 $ 521   $ 521