XML 56 R39.htm IDEA: XBRL DOCUMENT v3.3.1.900
Asset Retirement and Reclamation Liabilities (Tables)
 12 Months Ended
Dec. 31, 2015
Asset Retirement and Reclamation Liabilities  
Summary of activity in the Velardena Properties ARO

 

 

 

December 31,

 

 

 

2015

 

2014

 

 

 

(in thousands)

 

Beginning balance

 

$
2,582

 

$
2,467

 

 

 

 

 

 

 

Changes in estimates, and other

 
(300

)
(85

)

Accretion expense

 
198

 
200

 

 

 

 

 

 

 

Ending balance

 

$
2,480

 

$
2,582