Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2016

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

A reconciliation of our liability for plugging and abandonment costs for the three months ended March 31, 2016 is as follows (in thousands):

	Three Months Ended March 31,  2016
Beginning of period	$	264,137
Liabilities incurred		194
Liabilities settled		(3,201	)
Disposition of wells		(2,164	)
Accretion expense		3,978
Change in estimate		821
End of period		263,765
Less current portion		(15,071	)
Long-term asset retirement obligations	$	248,694