Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 10,019	$ 3,119	$ 15,918	$ 7,949
Effective tax rate	23.40%	9.20%	23.80%	12.20%