v2.4.0.6

Derivatives and Other Financial Instruments and Hedging Activities (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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Summary of aggregate notional amount and estimated fair value of derivative instruments |  |
Derivative, Notional, Net value | $ 26,488 | $ 43,945
Derivative instrument, Fair Value | (3,432) | (3,954)
Foreign exchange contracts [Member] |  |
Summary of aggregate notional amount and estimated fair value of derivative instruments |  |
Derivative, Notional, Net value | 26,488 | 40,265
Derivative instrument, Fair Value | (3,432) | (3,807)
Foreign exchange contracts - undesignated [Member] |  |
Summary of aggregate notional amount and estimated fair value of derivative instruments |  |
Derivative, Notional, Net value |  | 3,680
Derivative instrument, Fair Value |  | $ (147)

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
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