Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 26,733,000	$ 31,174,000
Effective tax rate	19.50%	24.00%
Minimum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Increase in unrecognized tax benefits is reasonably possible	$ 0
Maximum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Increase in unrecognized tax benefits is reasonably possible	$ 1,000,000