Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	15.50%	16.10%	15.70%	16.70%
U.S. statutory rate	21.00%	21.00%
Provision for income taxes	$ 21,920,000	$ 18,104,000	$ 45,942,000	$ 61,838,000
Unrecognized tax benefits that would have a favorable impact on effective tax rate	$ 100,000		$ 100,000