Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

Income Taxes

Schedule of income tax provision and effective income tax rate

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Income tax expense	$	12,918		$	711		$	19,800		$	12,780
Effective income tax rate		39.9	%		13.4	%		22.7	%		35.2	%