Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2013

Asset Retirement Obligation Disclosure [Abstract]

Schedule Of Asset Retirement Obligations

The following table shows certain information about our AROs for the periods indicated:

	Six Months Ended June 30,
	2013			2012
	(In thousands)
ARO liability, January 1:	$	146,159		$	96,446
Accretion of discount	2,825			2,126
Liability incurred	2,869			4,420
Liability settled	(3,516		)	(1,447		)
Revision of estimates (1)	(11,298		)	(5,022		)
ARO liability, June 30:	137,039			96,523
Less current portion	2,948			2,909
Total long-term ARO	$	134,091		$	93,614

(1) Plugging liability estimates were revised in both 2013 and 2012 for updates in the cost of services used to plug wells over the preceding year. We had various upward and downward adjustments as well as changes in estimated timing of cash flows.