Derivative Financial Instruments (Schedule Of Effect Of Derivative Instruments On Financial Performance) (Details) - Foreign Exchange Contract [Member] - Forward Contracts [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Not Designated as Hedging Instrument [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ (1,147)	$ (577)	$ 489	$ (1,562)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Other Comprehensive Income (Loss) (Effective Portion)	7,768	(359)	6,324	(336)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Operating Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss (Effective Portion)	$ (5,421)	$ 1,651	$ (9,668)	$ 2,948