Stock-Based Compensation (Summary Of RSU Transactions) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Share Units	160,694	222,782
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested share units at beginning of period, Number of Share Units	192,217
Granted, Number of Share Units	102,306
Actual vested, Number of share Units	(63,982)
Forfeited, Number of Share Units	(1,600)
Nonvested share units at end of period, Number of Share Units	228,941
Nonvested share units at beginning of period, Weighted Average Fair Value	$ 45.06
Granted, Weighted Average Fair Value	36.60	$ 45.61
Actual vested, Weighted Average Fair Value	44.45
Forfeited, Weighted Average Fair Value	42.40
Nonvested share units at end of period, Weighted Average Fair Value	$ 41.46