Income Taxes Income Tax (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Valuation Allowance [Line Items]
Provision for income taxes	$ 33,690	$ 17,219	$ 59,105	$ 26,829
Effective Income Tax Rate Reconciliation, Percent	23.80%	24.00%	23.50%	23.70%