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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2014
Income Taxes [Abstract]  
Tax provision (benefit)
The effect of the change in valuation allowance on the provision for (benefit from) income taxes was as follows:

  
Three Months Ended
September 30,
  
Nine Months Ended
September 30,
 
  
2014
  
2013
  
2014
  
2013
 
  
(In thousands)
 
         
Tax provision (benefit) before valuation allowance
 
$
25,030
  
$
(674
)
 
$
65,322
  
$
(17,792
)
Change in valuation allowance
  
(24,781
)
  
1,010
   
(63,229
)
  
20,257
 
                 
Provision for income taxes
 
$
249
  
$
336
  
$
2,093
  
$
2,465