Stock Options And Restricted Stock Awards (Weighted-Average Estimated Fair Value of Employee Stock Options Granted) (Details) - Employee Stock Option - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value	$ 32.96	$ 32.71
Risk-free discount rate, minimum	1.76%	0.65%
Risk-free discount rate, maximum	2.86%
Expected life	4 years 2 months 12 days	4 years 1 month 6 days
Dividend yield	0.00%	0.00%
Volatility	43.00%	45.00%