Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets, Net [Abstract]
Amortized intangible assets, Gross Carrying Value	$ 91,477	$ 42,743
Accumulated Amortization	(18,264)	(9,881)
Amortized intangible assets, Net Carrying Value	73,213	32,862
Intangible Assets, Gross (Excluding Goodwill)	91,937	43,203
Other intangible assets, net	73,673	33,322
Customer contracts and relationships
Finite-Lived Intangible Assets, Net [Abstract]
Amortized intangible assets, Gross Carrying Value	67,762	38,342
Accumulated Amortization	(14,345)	(7,814)
Amortized intangible assets, Net Carrying Value	53,417	30,528
Operating contracts and licenses
Finite-Lived Intangible Assets, Net [Abstract]
Amortized intangible assets, Gross Carrying Value	9,315	665
Accumulated Amortization	(652)	(272)
Amortized intangible assets, Net Carrying Value	8,663	393
Tradenames
Finite-Lived Intangible Assets, Net [Abstract]
Amortized intangible assets, Gross Carrying Value	8,324	1,322
Accumulated Amortization	(1,440)	(863)
Amortized intangible assets, Net Carrying Value	6,884	459
Other
Finite-Lived Intangible Assets, Net [Abstract]
Amortized intangible assets, Gross Carrying Value	886	898
Accumulated Amortization	(458)	(276)
Amortized intangible assets, Net Carrying Value	428	622
Non-compete agreements
Finite-Lived Intangible Assets, Net [Abstract]
Amortized intangible assets, Gross Carrying Value	5,190	1,516
Accumulated Amortization	(1,369)	(656)
Amortized intangible assets, Net Carrying Value	3,821	860
Operating licenses
Finite-Lived Intangible Assets, Net [Abstract]
Unamortized intangible assets, Gross Carrying Value	$ 460	$ 460