Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 12,714	$ 10,730	$ 32,773	$ 26,648
Effective tax rate	24.10%	27.10%	25.40%	25.00%