ASSET RETIREMENT OBLIGATIONS (Tables)

3 Months Ended

Mar. 31, 2017

Asset Retirement Obligations

Change in the carrying amount of the asset retirement obligation

(in thousands)
Asset retirement obligation at January 1, 2017	$	154,523
Liabilities incurred		1,522
Liability settlements and disposals		(2,035)
Accretion expense		1,857
Revisions of estimated liabilities		386
Asset retirement obligation at March 31, 2017		156,253
Less current obligation		(11,730)
Long-term asset retirement obligation	$	144,523