Financial Instruments (Schedule Of Forward Contracts With Contract Values) (Details) In Thousands, unless otherwise specified	Mar. 31, 2013 Forward_Contracts	Dec. 31, 2012 Forward_Contracts	Mar. 31, 2013 Euro/GBP [Member] EUR (€) Forward_Contracts	Mar. 31, 2013 Canadian Dollar/Euro [Member] CAD Forward_Contracts	Mar. 31, 2013 U S Dollar/ Euro [Member] USD ($) Forward_Contracts	Mar. 31, 2013 Brazilian Real/Euro [Member] BRL Forward_Contracts
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number	13	12	1	2	5	5
Contract Amount			€ 300	4,512	$ 22,200	12,500

Number of foreign currency exchange rate derivatives held by the entity at the reporting date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_NumberOfForeignCurrencyDerivativesHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant