Asset Retirement Obligations (Table)

12 Months Ended

Dec. 31, 2014

Asset Retirement Obligations

Asset retirement obligations

(Dollars in thousands)		2014		2013
Balance, beginning of period		$	195,568	$	179,607
	Additional liabilities accrued		2,507		635
	Revisions in estimated cash outflows		(2,792)		6,268
	Disposition of assets		(44,403)		(3,534)
	Accretion expense		12,534		12,592
	Transferred to Liabilities held for sale		(10,902)		-
Balance, end of period (1)		$	152,512	$	195,568
(1)	The total amount of asset retirement obligations related to the Divestiture Transaction included in Other current liabilities was $5.9 million and $37.7 million as of December 31, 2014 and 2013, respectively.