Derivative Instruments (Fair Value Gains And Losses On Contracts Recorded In Earnings) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives	$ (189)		$ (234)		$ (294)
Foreign Exchange Contracts [Member] | Other Expense - Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives	$ (189)	[1]	$ (234)	[1]	$ (294)	[1]

[1] As of December 31, 2011, 2010 and 2009, these foreign exchange contracts were entered into and settled during the respective periods.