v3.8.0.1
Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Goodwill [Line Items]      
Goodwill     $ 56,992
Successor      
Goodwill [Line Items]      
Goodwill $ 579,446 $ 588,460  
Trademarks and Trade Names | Successor      
Goodwill [Line Items]      
Intangible assets with indefinite lives (trademarks and tradenames) 1,408,848 1,408,848  
Customer Relationships | Successor      
Goodwill [Line Items]      
Intangible assets with definite lives (customer relationships) $ 514,200 $ 538,100