Derivative Financial Instruments (Schedule Of Effect Of Derivative Instruments On Financial Performance) (Details) (Foreign Exchange Contract [Member], Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 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	$ 1,636	$ (985)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Recognized in Other Comprehensive Income (Loss) (Effective Portion)	(1,444)	23
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)	$ (4,247)	$ 1,297