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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% |  |

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