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Income Taxes
 6 Months Ended
Jun. 30, 2012
Income Tax Disclosure [Abstract]  
INCOME TAXES
INCOME TAXES
For the three and six months ended June 30, 2012, the Company reported an income tax provision of approximately $23.9 million and $39.3 million, respectively, compared to an income tax provision of $21.4 million and $34.3 million for the three and six months ended June 30, 2011, respectively.
The following table summarizes the components of the Company’s income tax provision from continuing operations for the three and six months ended June 30, 2012 and 2011 (in thousands): 
 
Three months ended
June 30,
 
Six months ended
June 30,
 
2012
 
2011
 
2012
 
2011
United States
$
(388
)
 
$
(2,202
)
 
$
(3,525
)
 
$
(958
)
Argentina
(38
)
 
(15
)
 
(239
)
 
83

Australia
(495
)
 
(700
)
 
(1,206
)
 
(1,118
)
Mexico
(12,052
)
 
(6,376
)
 
(15,750
)
 
(10,202
)
Bolivia
(10,889
)
 
(12,109
)
 
(18,578
)
 
(22,146
)
Income tax provision from continuing operations
$
(23,862
)
 
$
(21,402
)
 
$
(39,298
)
 
$
(34,341
)

The income tax provision for the three and six months ended June 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 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.