Financial Commitments (Reconciliation of Outstanding Debt Balance to Reported Debt Balance) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total debt	$ 801,167	$ 899,745
Term Loan B
Debt Instrument [Line Items]
Outstanding Debt	275,051	367,154
Unamortized Discounts and Issuance Costs	(8,092)	(9,410)
Total debt	266,959	357,744
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Outstanding Debt	500,000	500,000
Unamortized Discounts and Issuance Costs	(1,297)	(1,590)
Total debt	$ 498,703	$ 498,410