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Debt - Certain Covenants (Details) - Amended And Restated Credit Agreement | 3 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2015 | Mar. 31, 2017 | Dec. 31, 2016
Debt Instrument [Line Items] |  |  |
Debt to Consolidated EBITDA ratio |  | 234.00% | 279.00%
Debt Instrument, Covenant, Period One |  |  |
Debt Instrument [Line Items] |  |  |
Required minimum Debt to Consolidated EBITDA ratio | 5.30 |  |
Debt Instrument, Covenant, Period Two |  |  |
Debt Instrument [Line Items] |  |  |
Required minimum Debt to Consolidated EBITDA ratio | 4.50 |  |
Debt Instrument, Covenant, Period Three |  |  |
Debt Instrument [Line Items] |  |  |
Required minimum Debt to Consolidated EBITDA ratio | 3.5 |  |

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