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Derivative Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Gains (losses) for derivative instruments not designated as hedging instruments
Realized gains (losses) on derivative instruments	$ (9,290)	$ (10,099)	$ (18,401)	$ (20,336)
Unrealized gains (losses) on derivative instruments	(8,855)	(17,230)	(15,647)	3,776
Gain (loss) on derivative instruments, net	(18,145)	(27,329)	(34,048)	(16,560)
Interest Rate Swap Agreement [Member]
Gains (losses) for derivative instruments not designated as hedging instruments
Realized gains (losses) on derivative instruments	(9,284)	(10,046)	(18,363)	(20,283)
Unrealized gains (losses) on derivative instruments	(8,855)	(16,430)	(15,947)	3,376
Gain (loss) on derivative instruments, net	(18,139)	(26,476)	(34,310)	(16,907)
Toledo Spirit Time Charter Derivative [Member]
Gains (losses) for derivative instruments not designated as hedging instruments
Realized gains (losses) on derivative instruments	(6)	(53)	(38)	(53)
Unrealized gains (losses) on derivative instruments		(800)	300	400
Gain (loss) on derivative instruments, net	$ (6)	$ (853)	$ 262	$ 347

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Derivative instruments not designated as hedging instruments realized gain loss net.

+ References

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- Definition

Derivative instruments not designated as hedging instruments unrealized gain loss net.

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- Definition

Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4C

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959

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