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Debt And Liquidity (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Unamortized debt discount and issuance costs	$ (12,049)	$ (14,449)
Total	921,927	1,029,688
Less: Long-term debt, current portion	(124)	(127)
Long-term debt	921,803	1,029,561
Term Loan Facility
Debt Instrument [Line Items]
Long-term Debt, Gross	433,708	543,708
Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Gross	500,000	500,000
Other Debt
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 268	$ 429

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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