Income Taxes (Tables)

9 Months Ended

Sep. 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 September 30,						For the Nine Months Ended September 30,
	2016			2015			2016			2015
	(in thousands)
Current portion of income tax expense (benefit):
Federal	$	—		$	—		$	—		$	—
State	24			(8,308		)	265			2,092
Deferred portion of income tax expense (benefit)	(23,756		)	4,168			(314,770		)	(80,388		)
Income tax benefit	$	(23,732	)	$	(4,140	)	$	(314,505	)	$	(78,296	)
Effective tax rate	36.7		%	403.5		%	36.1		%	42.2		%