Stock-Based Compensation (Summary Of Restricted Stock Transactions) (Details) - $ / shares	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation plan, shares	(17,054)	(222,782)	(4,736)	(57,052)
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested share units at beginning of period, Number of Share Units		1,170			1,170
Equity compensation plan, shares					0	0
Vested, number of shares
Nonvested share units at end of period, Number of Share Units	1,170				1,170
Nonvested share units at beginning of period, Weighted Average Fair Value		$ 42.75			$ 42.75
Granted, Weighted Average Fair Value					0
Actual vested, Weighted Average Fair Value
Nonvested share units at end of period, Weighted Average Fair Value	$ 42.75				$ 42.75