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Plant and Equipment
12 Months Ended
Dec. 31, 2011
Plant and Equipment [Abstract]  
Plant and Equipment
 
6. Plant and Equipment

   
December 31, 2011
  
December 31, 2010
 
   
Cost
  
Accumulated
depreciation
and write downs
  
Net
  
Cost
  
Accumulated
depreciation and
write downs
  
Net
 
                    
Concordia, Mexico
 $18,238  $92  $18,146  $18,185  $63  $18,122 
Awak Mas, Indonesia
  233   171   62   119   91   28 
Mt. Todd, Australia
  1,660   689   971   1,110   494   616 
Corporate, United States
  430   377   53   355   312   43 
   $20,561  $1,329  $19,232  $19,769  $960  $18,809