Derivative Instruments (Amount Of Loss Recognized In Income On Derivatives (Ineffective Portion And Amount Excluded From Effectiveness Testing)) (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 (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ (75)	$ (6)	$ (20)
Other Expense - Net [Member] | Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	$ (75)	$ (6)	$ (20)