v3.8.0.1

Debt - 6.625% Senior Notes (Details) - USD ($) | May 18, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2014
--- | --- | --- | --- | ---
6.625% Senior Notes Due 2022 |  |  |  |
Debt |  |  |  |
Aggregate principal amount | $ 400,000,000 |  |  |
Stated interest rate (percent) | 6.625% |  |  |
Consolidation, Wholly Owned Subsidiary, Parent Ownership Interest, Percentage | 100.00% |  |  |
6.625% Senior Notes Due 2022 | Covenant Replacement Event |  |  |  |
Debt |  |  |  |
Redemption price (percent) | 101.00% |  |  |
6.625% Senior Notes Due 2022 | Redemption prior to May 15, 2019 via certain equity offerings |  |  |  |
Debt |  |  |  |
Redemption amount as a percentage of principal | 35.00% |  |  |
Redemption price (percent) | 106.625% |  |  |
6.625% Senior Notes Due 2022 | Redemption prior to May 15, 2019 |  |  |  |
Debt |  |  |  |
Redemption amount as a percentage of principal | 100.00% |  |  |
6.625% Senior Notes Due 2022 | Minimum | Redemption prior to May 15, 2019 via certain equity offerings |  |  |  |
Debt |  |  |  |
Remaining debt (percent) | 65.00% |  |  |
8.5% Senior Notes Due 2019 |  |  |  |
Debt |  |  |  |
Aggregate principal amount | $ 200,000,000 |  |  |
Stated interest rate (percent) | 8.50% |  | 8.50% |
Senior Notes | 8.5% Senior Notes Due 2019 |  |  |  |
Debt |  |  |  |
Aggregate principal amount |  |  |  | $ 200,000,000
Stated interest rate (percent) |  | 6.625% |  | 8.50%
Senior Secured Credit Facility |  |  |  |
Debt |  |  |  |
Aggregate principal amount | $ 30,000,000 |  |  |

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