Financial Instruments And Derivatives (Schedule Of Fair Value Of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Derivatives [Line Items]
Foreign exchange contracts derivatives not designated as hedging instruments at fair value, net	$ 146	$ 314
Prepayment And Other Current Assets [Member]
Derivatives [Line Items]
Foreign exchange contracts derivatives not designated as hedging instruments, assets at fair value	146
Other Accrued Liabilities [Member]
Derivatives [Line Items]
Foreign exchange contracts derivatives not designated as hedging instruments, liability at fair value		$ 314

Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant