Stock-Based Compensation And Stock Repurchase Plans (Schedule Of Restricted Stock Units Issued And Vested) (Details) - Restricted Stock Units (RSUs) [Member] - shares			6 Months Ended	12 Months Ended
	Apr. 21, 2023	Apr. 11, 2023	Jun. 30, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted	52,350	85,139	2,233,372	697,515
Number of options, Vesting			896,139	642,908
Number of options, Unvested			1,240,292	18,758
Number of options, Forfeited			96,941	35,849
Award Date 4 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			262,830
Number of options, Vesting			90,804
Number of options, Unvested			149,008
Number of options, Forfeited			23,018
Award Date 5 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			22,888
Number of options, Vesting			10,831
Number of options, Unvested			10,560
Number of options, Forfeited			1,497
Award Date 6 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			26,924
Number of options, Vesting			26,924
Award Date 7 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			48,951
Number of options, Vesting			48,951
Award Date 8 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			428,899
Number of options, Vesting			75,721
Number of options, Unvested			316,601
Number of options, Forfeited			36,577
Award Date 9 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			73,683
Number of options, Unvested			73,683
Award Date 10 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			413,536
Number of options, Unvested			413,536
Award Date 11 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			237,719
Number of options, Unvested			237,719
Award Date 12 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			20,427
Number of options, Unvested			20,427
Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			339,438	189,880
Directors [Member] | Award Date 6 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			26,924
Directors [Member] | Award Date 7 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			48,951
Directors [Member] | Award Date 9 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			73,683
Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			1,893,934	507,635
Management [Member] | Award Date 4 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			262,830
Management [Member] | Award Date 5 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			22,888
Management [Member] | Award Date 8 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			428,899
Management [Member] | Award Date 10 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			413,536
Management [Member] | Award Date 11 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			237,719
Management [Member] | Award Date 12 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Granted			20,427