Income Taxes (Tables)

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes

The provision for income taxes for the three and six months ended June 30, 2017, and 2016, consisted of the following:

	For the Three Months Ended   June 30,						For the Six Months Ended   June 30,
	2017			2016			2017			2016
	(in thousands)
Current portion of income tax benefit (expense):
Federal	$	4,607		$	—		$	(2,832	)	$	—
State	2,439			(77		)	(1,403		)	(241		)
Deferred portion of income tax benefit	64,015			95,975			30,790			291,014
Income tax benefit	$	71,061		$	95,898		$	26,555		$	290,773
Effective tax rate	37.2		%	36.2		%	36.9		%	36.0		%