Financial Commitments (Reconciliation Of Outstanding Debt Balance To Reported Debt Balance) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Outstanding Debt	$ 910,745
Unamortized Discounts and Issuance Costs	(11,000)
Total debt	899,745	$ 958,439
Term Loan B
Debt Instrument [Line Items]
Outstanding Debt	367,154	415,438
Unamortized Discounts and Issuance Costs	(9,410)	(11,269)
Total debt	357,744	404,169
2017 Senior Notes | 2017 Senior Notes
Debt Instrument [Line Items]
Outstanding Debt	500,000	500,000
Unamortized Discounts and Issuance Costs	(1,590)	(2,711)
Total debt	$ 498,410	$ 497,289