XML 36 R38.htm IDEA: XBRL DOCUMENT v2.4.0.8
Reclamation and Mine Closure (Tables)
 6 Months Ended
Jun. 30, 2013
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligation
Changes to the Company’s asset retirement obligations for active mining sites are as follows (in thousands): 
 
Three months ended June 30,
 
Six months ended
June 30,
 
2013
 
2012
 
2013
 
2012
Asset retirement obligation - Beginning
$
35,197

 
$
33,434

 
$
34,457

 
$
32,714

Accretion
758

 
742

 
1,500

 
1,466

Addition and changes in estimates
—

 
335

 
—

 
335

Settlements
(377
)
 
(1
)
 
(379
)
 
(5
)
Asset retirement obligation
$
35,578

 
$
34,510

 
$
35,578

 
$
34,510