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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2013
Income Tax Disclosure [Abstract]  
Income tax provision from continuing operations
The following table summarizes the components of the Company’s income tax provision from continuing operations for the three months ended March 31, 2013 and 2012 (in thousands): 
 
Three months ended
March 31,
 
2013
 
2012
 
 
 
 
United States
$
(2,487
)
 
$
(3,137
)
Argentina
73

 
(201
)
Australia
(105
)
 
(711
)
Mexico
(3,673
)
 
(3,698
)
Bolivia
(4,328
)
 
(7,689
)
Income tax provision from continuing operations
$
(10,520
)
 
$
(15,436
)