Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Tax Expense

Income tax expense was as follows:

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2018			2017			2018			2017
Current income tax expense	$	1,361		$	13,710		$	2,107		$	29,412
Deferred income tax expense (benefit)	12,475			128			22,886			(4,173		)
Income tax expense, as reported	$	13,836		$	13,838		$	24,993		$	25,239
Effective tax rate	11.1		%	13.9		%	10.3		%	12.9		%