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Reclamation
 12 Months Ended
Dec. 31, 2019
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 its operating sites are as follows:
 
Year ended December 31,
In thousands
2019
 
2018
Asset retirement obligation - Beginning
$
133,508

 
$
118,799

Accretion
11,968

 
11,037

Additions and changes in estimates
(7,538
)
 
6,880

Settlements
(3,540
)
 
(3,208
)
Asset retirement obligation - Ending
$
134,398

 
$
133,508


The Company accrued $1.9 million and $2.0 million at December 31, 2019 and December 31, 2018, respectively, for reclamation liabilities related to former mining activities, which are included in Reclamation.