Derivative Instruments And Hedging Activities (Schedule Of Derivative Instrument Fair Value) (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		$ 437,320	$ 340,805
Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current		16,167	32,244
Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Current		340	414
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	436,352	339,077
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Other Current Assets [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	[1],[2]	16,167	32,244
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Accrued Liabilities [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Current	[1],[3]	181	0
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	[1]	968	1,728
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Assets [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	[1],[2]	0	0
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Accrued Liabilities [Member] | Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Current	[1],[3]	159	414
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		6,510	11,804
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current		68	0
Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Current		960	1,613
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount		6,510	11,804
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	[2]	68	0
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Current	[3]	$ 960	$ 1,613

[1] Derivative designated as a cash flow hedge

[2] Included in other current assets

[3] Included in accrued liabilities