Derivative Financial Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Impact of the Partnership's derivative instruments on Condensed Consolidated Statements of Operations
Unrealized (loss) gain	$ (8,160)us-gaap_UnrealizedGainLossOnDerivatives	$ 11,820us-gaap_UnrealizedGainLossOnDerivatives
Derivative instruments not designated as hedging instruments
Impact of the Partnership's derivative instruments on Condensed Consolidated Statements of Operations
Total gain (loss)	2,828	4,099
Derivative instruments not designated as hedging instruments \| Revenue: Derivative gain (loss)
Impact of the Partnership's derivative instruments on Condensed Consolidated Statements of Operations
Realized gain (loss)	10,988	(7,607)
Unrealized (loss) gain	(3,620)	3,640
Total gain (loss)	7,368	(3,967)
Derivative instruments not designated as hedging instruments \| Derivative (loss) gain related to purchased product costs
Impact of the Partnership's derivative instruments on Condensed Consolidated Statements of Operations
Realized gain (loss)		(114)
Unrealized (loss) gain	(4,540)	7,912
Total gain (loss)	(4,540)	7,798
Derivative instruments not designated as hedging instruments \| Derivative gain related to facility expenses
Impact of the Partnership's derivative instruments on Condensed Consolidated Statements of Operations
Unrealized (loss) gain		$ 268

The element represents the decrease (increase) in the fair value of net assets, or increase (decrease) in fair value of net liabilities, arising from realized and unrealized losses (gains) from assets and liabilities measured at fair value on a recurring basis using unobservable inputs -Level 3.

No definition available.

+ Details

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- Details

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ 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 (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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