Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax receivables	$ 11,710		$ 11,710		$ 17,924
Income taxes payable	15,339		15,339		$ 14,154
Income tax expense/(benefit)	(5,879)	$ 9,309	1,756	$ 18,748
Net discrete tax expense (gain)	1,200	$ 700	500	$ 300
Deferred tax expense, valuation deferred tax assets	$ 200		$ 700
Effective tax rate	24.85%	27.30%	87.40%	30.00%
Estimated effective tax rate	28.91%	29.60%	28.91%	29.60%