Income Taxes (Tables)

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes

The provision for income taxes for the three months ended March 31, 2018, and 2017, consisted of the following:

	For the Three Months Ended   March 31,
	2018			2017
	(in thousands)
Current portion of income tax expense:
Federal	$	—		$	(7,439	)
State	(625		)	(3,842		)
Deferred portion of income tax expense	(98,366		)	(33,225		)
Income tax expense	$	(98,991	)	$	(44,506	)
Effective tax rate	23.8		%	37.4		%