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Income Taxes
 9 Months Ended
Sep. 30, 2012
Income Tax Disclosure [Abstract]  
INCOME TAXES
INCOME TAXES
For the three and nine months ended September 30, 2012, the Company reported an income tax provision of approximately $17.5 million and $56.8 million, respectively, compared to an income tax provision of $27.6 million and $61.9 million for the three and nine months ended September 30, 2011, respectively.
The following table summarizes the components of the Company’s income tax provision from continuing operations for the three and nine months ended September 30, 2012 and 2011 (in thousands): 
 
Three months ended
September 30,
 
Nine months ended
September 30,
 
2012
 
2011
 
2012
 
2011
United States
$
(465
)
 
$
1,300

 
$
(3,990
)
 
$
342

Argentina
1,232

 
(23
)
 
993

 
60

Australia
(545
)
 
(858
)
 
(1,751
)
 
(1,976
)
Mexico
5,409

 
(2,963
)
 
(10,341
)
 
(13,165
)
Bolivia
(23,106
)
 
(25,062
)
 
(41,684
)
 
(47,208
)
Income tax provision from continuing operations
$
(17,475
)
 
$
(27,606
)
 
$
(56,773
)
 
$
(61,947
)

The income tax provision for the three and nine months ended September 30, 2012 and 2011 varies from the statutory rate primarily because of differences in tax rates for the Company's foreign operations and changes in valuation allowances for net deferred tax assets, permanent differences and foreign exchange rate differences. The variance is also attributable to an audit of San Bartolomé's 2009 Bolivian tax return, whereby San Bartolomé incurred an additional $1.4 million of tax expense, including interest and penalties, related to the 2009 tax year and recognized a further $10.3 million of tax expense, including interest and penalties, related to uncertainty in similar tax positions for the years 2010 and 2011. In addition, the Company has recognized approximately $2.1 million of additional tax expense for 2012 related to these uncertain tax positions.
The Company has U.S. net operating loss carryforwards which expire in 2017 through 2031. Net operating losses in foreign countries have an indefinite carryforward period, except in Mexico where net operating loss carryforwards are limited to ten years.