Income Taxes (Tables)

6 Months Ended

Jun. 30, 2016

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,
	2016			2015			2016			2015
	(in thousands)
Current portion of income tax expense (benefit):
Federal	$	—		$	—		$	—		$	—
State	77			10,126			241			10,400
Deferred portion of income tax benefit	(95,975		)	(50,829		)	(291,014		)	(84,556		)
Total income tax benefit	$	(95,898	)	$	(40,703	)	$	(290,773	)	$	(74,156	)
Effective tax rate	36.2		%	41.4		%	36.0		%	40.1		%