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Reclamation
 9 Months Ended
Sep. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]  
RECLAMATION
RECLAMATION
Reclamation and mine closure costs are based principally on legal and regulatory requirements. Management estimates costs associated with reclamation of mining properties. On an ongoing basis, management evaluates its estimates and assumptions, and future expenditures could differ from current estimates.
Changes to the Company’s asset retirement obligations for operating sites are as follows:
 
Three months ended September 30,
 
Nine months ended September 30,
In thousands
2016
 
2015
 
2016
 
2015
Asset retirement obligation - Beginning
$
85,545

 
$
87,601

 
$
82,072

 
$
67,214

Accretion
2,059

 
2,038

 
6,027

 
5,652

Additions and changes in estimates
(239
)
 
—

 
(118
)
 
18,270

Settlements
(183
)
 
(2,363
)
 
(799
)
 
(3,860
)
Asset retirement obligation - Ending
$
87,182

 
$
87,276

 
$
87,182

 
$
87,276


The Company has accrued $1.5 million and $3.2 million at September 30, 2016 and December 31, 2015, respectively, for reclamation liabilities related to former mining activities, which are included in Reclamation.