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Long-Term and Other Debt - Terms of Outstanding Debt (Details) | 1 Months Ended | 3 Months Ended
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Feb. 28, 2017 | Dec. 31, 2017
Debt Instrument, Redemption, Period One |  |
Debt Instrument [Line Items] |  |
First lien leverage ratio, period one maximum |  | 6.0
Debt Instrument, Redemption, Period Two |  |
Debt Instrument [Line Items] |  |
First lien leverage ratio, period one maximum | 5.5 |
Debt Instrument, Redemption, Period Three |  |
Debt Instrument [Line Items] |  |
First lien leverage ratio, period one maximum | 5.0 |

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- Definition Debt Instrument, Restrictive Covenants, First Lien Leverage Ratio + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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