Financial Commitments (Reconciliation of Outstanding Debt Balance to Reported Debt Balance) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total debt	$ 926,257	$ 958,439
Term Loan B
Debt Instrument [Line Items]
Outstanding Debt	369,279	415,438
Unamortized Discounts and Issuance Costs	(10,169)	(11,269)
Total debt	359,110	404,169
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Outstanding Debt	500,000	500,000
Unamortized Discounts and Issuance Costs	(2,161)	(2,711)
Total debt	$ 497,839	$ 497,289