Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Components of operating assets and liabilities
Decrease (increase) in restricted cash	$ 451	$ 4,691
Decrease (increase) in accounts receivable	(30,977)	(116,987)
Decrease (increase) in receivable from affiliates	(6,861)	622
Decrease (increase) in inventories	(13,983)	(1,804)
Decrease (increase) in derivatives and margin deposits	1,972	457
Decrease (increase) in other current assets	2,269	8,393
Decrease (increase) in other assets	258	2,457
Increase (decrease) in accounts payable and accrued liabilities	50,614	97,638
Increase (decrease) in payable to affiliates	2,102	(5,160)
Increase (decrease) in payables to pre-petition creditors	(416)	(4,541)
Increase (decrease) in other noncurrent liabilities	(1,349)	2,942
Total changes in operating assets and liabilities	$ 4,080	$ (11,292)

Increase (decrease) in derivatives and margin deposits

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- Definition

Increase (decrease) in payables to pre-petition creditors.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

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- Definition

The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

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- Definition

The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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The increase (decrease) in obligations owed to an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.

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The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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The increase (decrease) during the reporting period of all assets and liabilities used in operating activities.

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The increase (decrease) during the reporting period in other current operating assets not separately disclosed in the statement of cash flows.

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No definition available.

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The increase (decrease) during the reporting period in other noncurrent operating assets not separately disclosed in the statement of cash flows.

+ References

No definition available.

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The increase (decrease) during the reporting period in other noncurrent operating liabilities not separately disclosed in the statement of cash flows.

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No definition available.

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- Definition

The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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-Paragraph 13

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