Derivative Instruments And Hedging Activities (Fair Values Of Derivative Instruments On Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivative assets	$ 6,908	$ 4,246
Derivative liabilities	(4,742)	(2,804)
Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	6,544	4,002
Derivative liabilities	(3,350)	(2,090)
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	4,825	2,956
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Accrued Expenses And Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	(3,350)	(1,292)
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Long-Term [Member] | Other Long-Term Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	1,719	1,046
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contracts - Long-Term [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities		(798)
Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	364	244
Derivative liabilities	(1,392)	(714)
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Prepaid Expenses And Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	364	244
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract - Short-Term [Member] | Accrued Expenses And Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ (1,392)	$ (714)