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Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2012
Asset Retirement Obligations [Abstract]  
Reconciliation of the total liability for asset retirement obligations
The following is a reconciliation of the total liability for asset retirement obligations:

   
(In thousands)
 
   
June 30,
  
December 31,
 
   
2012
  
2011
 
Beginning asset retirement obligation
 $510  $303 
Accretion of discount
  16   23 
Liabilities incurred
  93   187 
Liabilities sold
  --   (3)
Ending asset retirement obligation
 $619  $510 
          
Mining properties
 $155  $149 
Oil & Gas wells
  464   361 
Ending asset retirement obligation
 $619  $510