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Acquisitions and Dispositions	9 Months Ended
Acquisitions and Dispositions	Sep. 30, 2011
Acquisitions and Dispositions [Abstract]
Acquisitions and Dispositions	(7) Acquisitions and Dispositions In October 2011, we closed the sale of our properties located in Louisiana, Texas and Alabama. The fields in Louisiana include Horseshoe Bayou/Bayou Sale, High Island, Bayou Penchant, Jeanerette and Cote Blanche Island. The Texas fields include Bego South and Briscoe Ranch. The Alabama field includes Chunchula. As a result, the Company received sale proceeds of $48.8 million, net of $4.7 million purchase price adjustments related to these properties. This sale also included the assumption of $27.7 million for asset retirement obligations on these properties.