Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective tax rate	16.10%	10.60%	16.70%	13.80%
U.S. statutory rate	21.00%	21.00%	21.00%	21.00%
Provision for income taxes	$ 18,104,000	$ 20,755,000	$ 61,838,000	$ 90,940,000
Unrecognized tax benefits that would have a favorable impact on effective tax rate	$ 100,000		$ 100,000