Derivative Financial Instruments (Schedule Of The Fair Values Of Derivative Instruments) (Details) (Foreign Exchange Contract [Member], Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Asset Derivatives
Asset derivatives designated as hedging instruments	$ 4,686	$ 4,157
Designated as Hedging Instrument [Member] | Accrued Expenses And Other Current Liabilities [Member]
Liability Derivatives
Liability derivatives designated as hedging instruments	2,392	4,162
Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Asset Derivatives
Asset derivatives designated as hedging instruments	431	448
Not Designated as Hedging Instrument [Member] | Accrued Expenses And Other Current Liabilities [Member]
Liability Derivatives
Liability derivatives designated as hedging instruments	$ 430	$ 52