Derivative Instruments And Hedging Activities (Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Asset derivatives not designated as hedging instruments	$ 55	$ 190
Liability derivatives not designated as hedging instruments	159
Other Current Assets [Member] \| Foreign Exchange Forwards [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives not designated as hedging instruments	55	148
Other Assets [Member] \| Foreign Exchange Forwards [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives not designated as hedging instruments		42
Accrued Liabilities [Member] \| Foreign Exchange Forwards [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives not designated as hedging instruments	$ 159

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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