Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2018

Asset Retirement Obligations

Changes In Asset Retirement Obligation Liability

The changes in the Company’s ARO liability consisted of the following (in thousands):

Asset retirement obligations at December 31, 2017	$	69,757
Additional obligations		6,054
Accretion expense		1,407
Change in estimates		462
Payments		(12,358)
Foreign currency translation adjustments		(2,663)
Asset retirement obligations at September 30, 2018		62,659
Less: current portion of asset retirement obligations		6,954
Asset retirement obligations, excluding current portion, September 30, 2018	$	55,705