Interest Expense (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.20%		4.20%
Repayments of Long-term Debt			$ 110,000	$ 300,000
Accretion of original issue discount on 2018 Term Loan Facility	$ 178	$ 815	1,043	2,658
Amortization of debt issuance costs and modification costs	$ 642	1,707	$ 2,818	7,075
2018 Term Loan Facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	6.12%		6.12%		3.50%
Repayments of Long-term Debt	$ 0	100,000	$ 110,000	300,000
Accretion of original issue discount on 2018 Term Loan Facility		500	500	1,800
Amortization of debt issuance costs and modification costs		$ 900	$ 800	2,900
Payments of Debt Restructuring Costs				$ 1,600
2020 Senior Secured Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%		4.625%

Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

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Amount of amortization expense attributable to debt issuance costs.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The cash outflow for cost incurred in the modification of term of existing debt agreement in order for the entity to achieve some advantage.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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