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Basis of Preparation (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Accounting Policies [Abstract] |  |  |  |
Minimum ownership percentage of investments in affiliates required to be accounted for under the equity method | 20.00% |  | 20.00% |
Maximum ownership percentage of investments in affiliates required to be accounted for under the equity method | 50.00% |  | 50.00% |
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives | $ (2,558) | $ (1,068) | $ (1,939) | $ (1,619)

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- Definition Maximum Ownership Percentage Of Investments In Affiliates Required To Be Accounted For Under The Equity Method + References No definition available. + Details
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- Definition Amount of gain (loss) from the increase (decrease) in fair value of foreign currency derivatives and nonderivative instruments designated as fair value hedging instruments which were recognized in earnings, net of offsets by the gain (loss) on the hedged item to the extent that the fair value hedge was determined to be effective. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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