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Derivative Instruments And Hedging Activities (Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Asset derivatives not designated as hedging instruments | $ 5,946 | $ 55
Liability derivatives not designated as hedging instruments | 16,298 | 159
Accrued Liabilities [Member] | Foreign Exchange Forward [Member] |  |
Liability derivatives not designated as hedging instruments |  | 159
Accrued Liabilities [Member] | Oil Contract [Member] |  |
Liability derivatives not designated as hedging instruments | 15,777 |
Accrued Liabilities [Member] | Interest Rate Swaps [Member] |  |
Liability derivatives not designated as hedging instruments | 489 |
Other Liabilities [Member] | Interest Rate Swaps [Member] |  |
Liability derivatives not designated as hedging instruments | 32 |
Other Current Assets [Member] | Foreign Exchange Forward [Member] |  |
Asset derivatives not designated as hedging instruments | 146 | 55
Other Current Assets [Member] | Oil Contract [Member] |  |
Asset derivatives not designated as hedging instruments | $ 5,800 |

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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. + References 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FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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=7476318&loc=SL5624163-113959 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability. + References 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=7476318&loc=SL5624163-113959 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant