v2.4.0.8

Derivative Financial Instruments (Derivatives and Hedging - Designated) (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | $ 743 | $ 2,235
Derivative Liability, Fair Value, Gross Liability | 2,613 | 146
Designated as Hedging Instrument [Member] | NYMEX Commodity Contracts [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 30 | 0
Designated as Hedging Instrument [Member] | NYMEX Commodity Contracts [Member] | Other Current Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 0 | 146
Designated as Hedging Instrument [Member] | NYMEX Commodity Contracts [Member] | Other Noncurrent Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 0 | 2,235
Designated as Hedging Instrument [Member] | NYMEX Commodity Contracts [Member] | Other Noncurrent Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 70 | 0
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 713 |
Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Other Current Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 2,543 |
Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 31,879 | 430
Derivative Liability, Fair Value, Gross Liability | 4,152 | 7,021
Not Designated as Hedging Instrument [Member] | NYMEX Commodity Contracts [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 31,879 | 48
Not Designated as Hedging Instrument [Member] | NYMEX Commodity Contracts [Member] | Other Current Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 897 | 7,021
Not Designated as Hedging Instrument [Member] | Butane Futures Agreements [Member] | Other Current Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 0 | 382
Not Designated as Hedging Instrument [Member] | Butane Futures Agreements [Member] | Other Current Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | $ 3,255 | $ 0

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313 + Details
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