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Accrued MICP bonuses.

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Additional [Member]s' Capital and Distributions.

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The number of units sold of each class of unit. Units represent ownership of a public limited liability company. This may include common and preferred units of a publicly listed limited liability company.

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Units Available Under LTIP Eligible To Be Issued As Restricted Common Units Phantom Units Or Unit Awards.

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Common units issued to settle our EICP and MICP obligations.

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Unrecognized compensation costs related to MICP.

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

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The cash inflow from the issuance of preferred limited partners units during the period.

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Members' Capital and Distributions (Details Textual) (USD $)	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Series A Preferred Unit	Sep. 30, 2010 Series A Preferred Unit
Additional Members' Capital and Distributions (Textual) [Abstract]
Issuance of Units in Units				10,327,022
Gross proceeds from issuance of Series A convertible preferred units				$ 300,000,000
Issuance Date of Preferred Stock Issued as in Kind Distributions During Specific Period			Issued on or about November 10, 2011
Members' Capital and Distributions (Textual) [Abstract]
Units available for grant under LTIP	2,204,880
Units available under LTIP eligible to be issued as restricted common units, phantom units or unit awards	1,677,538
Non-cash compensation expense related to the amortization of equity-based compensation under LTIP	6,795,000	5,790,000
Common units issued to settle our EICP and MICP obligations	72,450
Accrued EICP bonuses	554,000
Accrued MICP bonuses	1,623,000
Unrecognized compensation costs related to MICP	$ 902,000