Property plant and equipment, Net associated with the financing obligation.

No definition available.

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Represents the total costs incurred under the gas gathering agreements

No definition available.

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Proceeds from Gas Gathering System, Financing Obligation

No definition available.

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Amount of daily production of the applicable energy source.

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 8

-Subparagraph A

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Total amount of product committed to be supplied under existing contracts or agreements.

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 8

-Subparagraph A

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Jul. 31, 2009	Mar. 31, 2012	Mar. 31, 2011
Uinta
Uinta Crude Oil Sales Contract
Sales contract, minimum purchase of crude oil (in Bbl/D)		5,000
Gross oil production average (in Bbl/D)		3,770
East Texas
E. Texas Gathering System
Proceeds from gas gathering system, financing obligation	$ 18.4
Net book value of property	16.7
E. Texas Gathering Agreements, Total Cost Incurred		$ 0.9	$ 1.7