v3.8.0.1

Summary of Significant Accounting Policies - Employee Benefit Plans (Details) - USD ($) | 2 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 | Nov. 03, 2016 | Dec. 31, 2017 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Health care contributions, by the Company |  |  | $ 1,100,000 | $ 1,000,000
Predecessor |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Health care contributions, by the Company |  | $ 1,100,000 |  |
Successor |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Health care contributions, by the Company | $ 0 |  |  |
Annual incentive compensation | $ 5,997,000 |  | 4,259,000 |
Changes On Certain Ownership Levels | Successor |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Liability from incentive compensation |  |  | $ 600,000 |

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