Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019 is as follows (in thousands):

	Three Months Ended March 31,  2019
Beginning of period	$	312,754
Liabilities incurred		1,719
Liabilities settled		(896	)
Accretion expense		4,217
Change in estimate		(187	)
End of period		317,607
Less current portion		(5,485	)
Long-term asset retirement obligations	$	312,122