Stock-Based Compensation (Summary Of Stock Award Transactions) (Details) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, Number of Share Units	577	23,142	160,694	133	17,054	222,782
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested share units at beginning of period, Number of Share Units
Granted, Number of Share Units							22,813
Vested, number of shares							(22,813)
Nonvested share units at end of period, Number of Share Units
Nonvested share units at beginning of period, Weighted Average Fair Value
Granted, Weighted Average Fair Value							36.82	$ 41.78
Vested, Weighted Average Fair Value							36.82
Nonvested share units at end of period, Weighted Average Fair Value