Interest Expense (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	4.20%	4.20%
Repayments of Long-term Debt	$ 0	$ 70,000
Accretion of original issue discount on 2018 Term Loan Facility	168	527
Amortization of debt issuance costs and modification costs	$ 655	1,244
2018 Term Loan Facility
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	7.84%		7.38%
Repayments of Long-term Debt	$ 0	70,000
Accretion of original issue discount on 2018 Term Loan Facility		300
Amortization of debt issuance costs and modification costs		$ 500
2020 Senior Secured Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	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 debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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