Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 12,543	$ 10,019	$ 20,059	$ 15,918
Effective tax rate	26.60%	23.40%	26.30%	23.80%