Impairments (Tables)

9 Months Ended

Sep. 30, 2011

Summary of Impairment Charges

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Oil and gas properties	$	-	$	32,627	$	71,071	$	32,627
Other		-		2,500		-		3,624
	$	-	$	35,127	$	71,071	$	36,251