Income Taxes (Tables)

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Income Tax Expense

Income tax expense was as follows:

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2018			2017			2018			2017
Current income tax expense (benefit)	$	(1,152	)	$	15,224		$	955		$	44,636
Deferred income tax expense (benefit)	16,312			(5,332		)	39,198			(9,505		)
Income tax expense, as reported	$	15,160		$	9,892		$	40,153		$	35,131
Effective tax rate	11.4		%	9.6		%	10.7		%	11.8		%