Financial Commitments (Reconciliation of Outstanding Debt Balance to Reported Debt Balance) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total debt	$ 961,134	$ 993,654
Term Loan B
Debt Instrument [Line Items]
Outstanding Debt	416,500	419,688
Unamortized Discounts and Issuance Costs	(11,804)	(13,353)
Total debt	404,696	406,335
2017 Senior Notes | Senior Notes
Debt Instrument [Line Items]
Outstanding Debt	500,000	500,000
Unamortized Discounts and Issuance Costs	(2,980)	(3,756)
Total debt	$ 497,020	$ 496,244