Employee Stock And Incentive Plan (Assumptions Used In The Pricing Model) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)			5 years 5 months 23 days
Risk-free interest rate			1.92%
Expected volatility			26.50%
Dividend yield			2.37%
Grant date fair value			$ 9.34
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	3 years	3 years
Risk-free interest rate	1.75%	0.24%	0.66%
Expected volatility	31.90%	32.10%	24.20%
Grant date fair value	$ 42.33	$ 43.18	$ 55.25
Intrinsic value of vested PSUs		$ 6,050	$ 9,030
Fair value of vested PSUs		$ 5,321	$ 5,215