Derivatives (Schedule Of Realized And Unrealized Gains Or Losses On Derivative Instruments) (Details) (Gain (Loss) On Currency Exchange, Foreign Exchange Contracts, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Gain (Loss) On Currency Exchange | Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Realized and unrealized losses on derivative instruments	$ 4	$ (23)	$ (70)	$ (113)