Fair Value Measurements And Derivative Instruments (Schedule Of Fair Value Of Derivatives Designated As Cash Flow Hedges) (Details) - Derivatives Designated As Cash Flow Hedges [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges, Asset Derivatives, Fair Value	$ 0	$ 722
Derivatives designated as cash flow hedges, Liability Derivatives, Fair Value	1	8,301
Designated as Hedging Instrument [Member] | Foreign Currency Derivatives [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges, Asset Derivatives, Fair Value	0	722
Designated as Hedging Instrument [Member] | Foreign Currency Derivatives [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges, Liability Derivatives, Fair Value	0	1,234
Designated as Hedging Instrument [Member] | Commodity Derivative Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges, Asset Derivatives, Fair Value	0	0
Designated as Hedging Instrument [Member] | Commodity Derivative Contracts [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as cash flow hedges, Liability Derivatives, Fair Value	$ 1	$ 7,067