Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income) (Details)

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Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2014     $ (2,412)  
Other comprehensive income (loss) before reclassifications     (1,700)  
Amounts reclassified from other comprehensive income (loss)     (1,758)  
Net current period other comprehensive income (loss) $ 901 $ (1,764) (3,458) $ (2,051)
Balance as of June 30, 2015 (5,870)   (5,870)  
Unrealized losses on Marketable Securities [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2014     (59)  
Other comprehensive income (loss) before reclassifications     15  
Net current period other comprehensive income (loss)     15  
Balance as of June 30, 2015 (44)   (44)  
Foreign Currency Translation Adjustments [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2014     (4,244)  
Other comprehensive income (loss) before reclassifications     (3,584)  
Net current period other comprehensive income (loss)     (3,584)  
Balance as of June 30, 2015 (7,828)   (7,828)  
Unrealized Gains (Losses) on Cash Flow Hedges [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance as of December 31, 2014     1,891  
Other comprehensive income (loss) before reclassifications     1,869  
Amounts reclassified from other comprehensive income (loss)     (1,758)  
Net current period other comprehensive income (loss)     111  
Balance as of June 30, 2015 $ 2,002   $ 2,002