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Impairments (Tables)

6 Months Ended

Jun. 30, 2012

Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]

The following table summarizes impairment charges recorded during the periods presented:



	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
Oil and gas properties	$	28,481	$	71,071	$	28,481	$	71,071
Other	135		—		135		—
	$	28,616	$	71,071	$	28,616	$	71,071

- Definition

Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported.

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