Goodwill and Intangible Assets - Estimated Annual Amortization Expense (Details ) - USD ($) $ in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 16,504	$ 41,910	$ 40,327
Estimated annual amortization expense
2018		43,657
2019		43,970
2020		43,951
2021		43,814
2022		43,691
Thereafter		501,960
Net, finite lived intangible assets		$ 721,043