Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Schedule of effective income tax rate and income tax expense (benefit)

The following table summarizes our effective tax rate and income tax (benefit) expense for the three and nine months ended September 30, 2017 and 2016 (in thousands except for percentages):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Effective tax rate	43		%	24		%	41		%	32		%
Income tax (benefit) expense	$	(114,343	)	$	5,069		$	(143,521	)	$	3,725