v3.8.0.1

Fair Value Disclosures - Carrying and Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017 | May 18, 2017 | Jun. 23, 2015
--- | --- | --- | --- | ---
Carrying Amount | Earn-out |  |  |  |
Fair Value Disclosures |  |  |  |
Contingent consideration (earn-out) | $ 2,418 |  |  |
Fair Value | Level 3 | Earn-out |  |  |  |
Fair Value Disclosures |  |  |  |
Contingent consideration (earn-out) | 2,418 |  |  |
Senior Notes | 6.625% Senior Notes Due 2022 |  |  |  |
Fair Value Disclosures |  |  |  |
Stated interest rate (percent) |  |  | 6.625% |
Senior Notes | 6.00% Senior Convertible Notes Due 2020 |  |  |  |
Fair Value Disclosures |  |  |  |
Stated interest rate (percent) |  |  |  | 6.00%
Senior Notes | Carrying Amount | 6.00% Senior Convertible Notes Due 2020 |  |  |  |
Fair Value Disclosures |  |  |  |
Debt | 79,279 | $ 79,199 |  |
Senior Notes | Carrying Amount | 8.5% Senior Notes Due 2019 |  |  |  |
Fair Value Disclosures |  |  |  |
Debt | 393,318 | 392,909 |  |
Senior Notes | Fair Value | Level 2 | 6.00% Senior Convertible Notes Due 2020 |  |  |  |
Fair Value Disclosures |  |  |  |
Debt | 93,800 | 90,240 |  |
Senior Notes | Fair Value | Level 2 | 8.5% Senior Notes Due 2019 |  |  |  |
Fair Value Disclosures |  |  |  |
Debt | $ 409,000 | $ 420,480 |  |

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