Impairments

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



	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Oil and gas properties	$	—	$	—	$	28,481	$	71,071
Other	700		—		835		—
	$	700	$	—	$	29,316	$	71,071

In September 2012, we recognized an impairment of certain tubular inventory and well materials triggered primarily by declines in asset quality. In June 2012, we recognized an impairment of our Appalachian assets triggered by the expected disposition of these properties in the third quarter of 2012. In 2011, we recognized an impairment of our Arkoma Basin assets triggered by the expected disposition of these high-cost gas properties in the third quarter of 2011.