Income Taxes (Tables)
3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Income Tax Expense (Benefit) and Effective Tax Rates

The following table presents the income tax expense (benefit) and the effective tax rates (in thousands):

 

 

Three Months Ended

 

 

March 31,

2015

 

 

March 31,

2014

 

Income tax expense (benefit)

$

6,356

 

 

$

(3,618

)

Effective tax rate

 

23.1

%

 

 

47.5

%