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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Schedule of provision for income taxes
The provision for income taxes consists of the following:

 
For the Three Months Ended March 31,
 
2015
 
2014
 
(in thousands)
Current portion of income tax expense:
 
 
 
Federal
$

 
$

State
274

 
489

Deferred portion of income tax (benefit) expense
(33,727
)
 
38,374

Total income tax (benefit) expense
$
(33,453
)
 
$
38,863

 
38.7
%
 
37.2
%