Derivative Financial Instruments (Schedule Of The Fair Values Of Derivative Instruments) (Details) (Foreign Currency Exchange Contracts [Member], Forward Contracts [Member], Foreign currency derivatives, USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Derivatives Designated As Hedging Instruments [Member] | Foreign currency derivatives
Asset derivatives	$ 4,157	$ 2,762
Derivatives Designated As Hedging Instruments [Member] | Foreign currency derivatives
Liability derivatives	4,162	8,252
Derivatives Not Designated As Hedging Instruments [Member] | Foreign currency derivatives
Asset derivatives	448	69
Derivatives Not Designated As Hedging Instruments [Member] | Foreign currency derivatives
Liability derivatives	$ 52	$ 202