Income Taxes (Tables)

6 Months Ended

Jun. 30, 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 June 30,						For the Six Months Ended June 30,
	2015			2014			2015			2014
	(in thousands)
Current portion of income tax expense:
Federal	$	—		$	—		$	—		$	—
State	10,126			512			10,400			1,001
Deferred portion of income tax expense (benefit)	(50,829		)	35,537			(84,556		)	73,911
Total income tax expense (benefit)	$	(40,703	)	$	36,049		$	(74,156	)	$	74,912
	41.4		%	37.6		%	40.1		%	37.4		%