Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2016

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligations

Activity in asset retirement obligations for the Three Months Ended March 31, 2016 and the year ended December 31, 2015 is as follows:

	Three Months Ended March 31,		The Year Ended December 31,
(In thousands)	2016		2015
Balance at the beginning of the year	$	8,629	$	5,049
Additional obligations	—		863
Assumed through acquisition	—		3,690
Accretion expense	—		369
Foreign currency translation adjustment	—		(1,342		)
Balance at the end of the year	$	8,629	$	8,629