Per Share Data (Calculation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Earnings Per Share [Abstract]
Number of common share equivalent securities excluded from the diluted earnings per share calculation	1,800	1,800
Net income attributable to common shareholders	$ 42,449	$ 38,822
Amount allocated to participating securities	(101)	(91)
Net income attributable to common shareholders – basic	$ 42,348	$ 38,731
Total earnings per common share – basic	$ 0.40	$ 0.36
Weighted average number of common shares outstanding – basic	104,826	108,530
Net income attributable to common shareholders – diluted	$ 42,348	$ 38,731
Total earnings per common share – diluted	$ 0.40	$ 0.36
Incremental share awards granted	73	67
Weighted average number of common shares outstanding – diluted	104,899	108,597