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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2016
Income Tax Disclosure [Abstract]  
Tax provision (benefit)
The effect of the change in valuation allowance on the provision for income taxes for three and nine months ended September 30, 2016 and 2015 was as follows:
 
 
Three months ended September 30,
 
Nine months ended September 30,
(In thousands)
 
2016
 
2015
 
2016
 
2015
Provision for income tax
 
$
27,131

 
$
43,694

 
$
117,646

 
$
131,568

Change in valuation allowance
 
—

 
(739,298
)
 
—

 
(822,465
)
Provision for (benefit from) income taxes
 
$
27,131

 
$
(695,604
)
 
$
117,646

 
$
(690,897
)