Income Taxes (Tables)

9 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The provision for income taxes is shown in the tables below:

	Three Months Ended September 30
	2018		2017
Income tax expense	$	10,957	$	18,189

	Nine Months Ended September 30
	2018		2017
Income tax expense	$	13,498	$	29,046