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Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2011
Discontinued Operations [Abstract]  
Financial information included in the income (loss) from discontinued operations
         
    Year Ended
December 31, 2010
 
    Cerro Bayo Mine  

Sales of metal

  $  

Production costs applicable to sales

     

Depreciation and depletion

    (2,194

Administrative and general

    (18

Mining exploration

     

Care and maintenance and other

    (2,351

Other income and expense

    (145

Income tax expense

    (1,321
   

 

 

 

Income from discontinued operations

    (6,029

Loss on sale of net assets of discontinued operations, net of tax of $0.0 million

    (2,095
   

 

 

 
    $ (8,124
   

 

 

 

 

                         
    Year Ended December 31, 2009  
    Cerro Bayo Mine     Broken Hill     Total  

Sales of metal

  $ 1,673     $ 10,435     $ 12,108  

Production costs applicable to sales

    (1,211     (1,652     (2,863

Depreciation and depletion

    (4,195     (1,570     (5,765

Administrative and general

    (25           (25

Mining exploration

    (2,153           (2,153

Care and maintenance and other

    (10,430           (10,430

Other income and expense

    1,600             1,600  

Income tax benefit (expense)

    (2,309     236       (2,073
   

 

 

   

 

 

   

 

 

 

Income from discontinued operations

    (17,050     7,449       (9,601

Gain on sale of net assets of discontinued operations, net of tax of $6.5 million

          25,537       25,537  
   

 

 

   

 

 

   

 

 

 
    $ (17,050   $ 32,986     $ 15,936