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ASSET RETIREMENT OBLIGATION (Tables)
 12 Months Ended
Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Activity Related to Asset Retirement Obligation
The following table presents the activity related to the Company’s asset retirement obligation:
(In thousands)
Years Ended December 31,
 
2017
 
2016
Beginning balance
$
42,491

 
$
48,056

Adjustment due to changes in estimates
2,317

 
(5,343
)
Accretion of liability
3,555

 
5,090

Liabilities settled
(2,880
)
 
(4,310
)
Foreign Currency
2,501

 
(1,002
)
Ending balance
47,984

 
42,491

Less: current portion
891

 
424

Long-term portion of asset retirement obligation
$
47,093

 
$
42,067