Tax Receivable Agreement - Summary of Activity (Details) - Successor $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2017
USD ($)
| |
| Reconciliation of Tax Receivable Agreement Liability [Roll Forward] | |
| Balance December 31, 2016 (Successor) | $ 165,384 |
| Measurement period adjustment of the Business Combination | (3,017) |
| Balance arising from exchanges of Class B units for Class A shares | 12,215 |
| Remeasurement due to change in state tax rate | (1,589) |
| Remeasurement due to Tax Cuts and Jobs Act | (51,811) |
| Balance December 31, 2017 (Successor) | $ 124,360 |