Income Taxes (Reconciliation Of Effective Income Tax Rate Statutory Federal Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
US federal income tax statutory rate	21.00%	21.00%	21.00%
Foreign income taxes	(0.20%)	(2.20%)	6.80%
State income tax (net of federal benefit)	3.00%	(3.80%)	(0.30%)
Meals, entertainment, gifts and giveaways	0.40%		2.40%
Statutory to US GAAP adjustments, including foreign currency	2.60%	(1.80%)	3.70%
Valuation allowance	(4.60%)	41.00%	32.30%
Unrecognized tax benefit	(0.30%)
Stock options	1.30%	(0.10%)	1.90%
Tax Act impact			5.60%
Permanent and other items	(0.60%)	(0.90%)	3.50%
Total provision for income taxes	22.60%	11.20%	34.90%