Stock Option And Stock Award Plans (Summary Of Additional Information On Stock Options Outstanding And Exercisable) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares	3,108,741
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	3 years 3 months 18 days
Options Outstanding, Weighted Average, Exercise Price	$ 13.82
Options Outstanding, Aggregate Intrinsic Value	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	2,719,919	1,762,190
Options Exercisable, Weighted Average Exercise Price	$ 13.45
Options Exercisable, Aggregate Intrinsic Value	$ 0
- To 15.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$ 10.75
Range of Exercise Prices, Maximum	$ 16.37
Options Outstanding, Shares	2,939,509
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	3 years 4 months 24 days
Options Outstanding, Weighted Average, Exercise Price	$ 13.47
Options Outstanding, Aggregate Intrinsic Value	$ 0
Options Exercisable, Shares	2,550,687
Options Exercisable, Weighted Average Exercise Price	$ 13.03
Options Exercisable, Aggregate Intrinsic Value	$ 0
15.01 To 17.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum	$ 17.29
Range of Exercise Prices, Maximum	$ 25.94
Options Outstanding, Shares	169,232
Options Outstanding, Weighted Average, Remaining Contractual Life (Years)	8 months 12 days
Options Outstanding, Weighted Average, Exercise Price	$ 19.74
Options Outstanding, Aggregate Intrinsic Value	$ 0
Options Exercisable, Shares	169,232
Options Exercisable, Weighted Average Exercise Price	$ 19.74
Options Exercisable, Aggregate Intrinsic Value	$ 0