Summary Of Significant Accounting Policies (Schedule Of Unrecognized Compensation Cost Nonvested Awards) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 21,578
Remaining weighted-average amortization period	2 years 6 months
Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 6,125	[1]
Remaining weighted-average amortization period	1 year 7 months 6 days	[1]

[1] Based on the probable achievement of the performance goals identified in each award.