Derivative Financial Instruments (Schedule Of The Fair Values Of Derivative Instruments) (Details) (Foreign Currency Exchange Contracts [Member], Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Derivatives Not Designated As Hedging Instruments [Member] | Prepaid Expenses And Other Current Assets [Member]
Asset derivatives designated as hedging instruments	$ 44	$ 69
Derivatives Not Designated As Hedging Instruments [Member] | Accrued Expenses And Other Current Liabilities [Member]
Liability derivatives designated as hedging instruments	130	202
Derivatives Designated As Hedging Instruments [Member] | Prepaid Expenses And Other Current Assets [Member]
Asset derivatives designated as hedging instruments	4,068	2,762
Derivatives Designated As Hedging Instruments [Member] | Accrued Expenses And Other Current Liabilities [Member]
Liability derivatives designated as hedging instruments	$ 4,494	$ 8,252