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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2015
Income Tax Disclosure [Abstract]  
Income Tax (Benefit) Expense

Income tax (benefit) expense was as follows (in thousands):

 

 

Three Months Ended
September 30,

 

 

 

Nine Months Ended

September 30,

 

 

2015

 

 

 

2014

 

 

 

2015

 

 

 

2014

 

Income tax (benefit) expense

$

(134,781

)

 

$

93,522

 

 

$

(174,390

)

 

$

230,455

 

Effective tax rate

 

30.9

%

 

 

39.0

%

 

 

30.8

%

 

 

39.7

%