Derivative Instruments (Schedule Of Fair Value Of Derivatives Designated As Fair Value Hedges) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Designated As Hedging Instrument [Member] | Foreign Currency Derivatives [Member]
Derivative [Line Items]
Fair Value, Asset Derivatives	$ 0	$ 0
Fair Value, Liability Derivatives	0	195
Designated As Hedging Instrument [Member] | Foreign Currency Derivatives [Member] | Other Receivables [Member]
Derivative [Line Items]
Fair Value, Asset Derivatives	0	0
Designated As Hedging Instrument [Member] | Foreign Currency Derivatives [Member] | Other Payables [Member]
Derivative [Line Items]
Fair Value, Liability Derivatives	0	195
Not Designated As Hedging Instrument [Member] | Other Receivables [Member]
Derivative [Line Items]
Fair Value, Asset Derivatives	146	0
Not Designated As Hedging Instrument [Member] | Other Payables [Member]
Derivative [Line Items]
Fair Value, Liability Derivatives	756	0
Not Designated As Hedging Instrument [Member] | Foreign Currency Derivatives [Member] | Other Receivables [Member]
Derivative [Line Items]
Fair Value, Asset Derivatives	146	0
Not Designated As Hedging Instrument [Member] | Foreign Currency Derivatives [Member] | Other Payables [Member]
Derivative [Line Items]
Fair Value, Liability Derivatives	$ 756	$ 0