Restructuring Charges and Other Costs (Schedule Of Restructuring Reserves) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 125
Restructuring Charges	3,343	$ 1,400
Cash Payment	(3,460)
Non-Cash Activity	0
Ending Balance	8
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	35
Restructuring Charges	2,988
Cash Payment	(3,023)
Non-Cash Activity	0
Ending Balance	0
Lease Facility Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	9
Restructuring Charges	0
Cash Payment	(1)
Non-Cash Activity	0
Ending Balance	8
Other Exit Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	81
Restructuring Charges	355
Cash Payment	(436)
Non-Cash Activity	0
Ending Balance	$ 0