Goodwill and Intangible Assets, net Goodwill and Intangible Assets (Intangible Rollforward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-lived Intangible Assets [Roll Forward]
Net Finite-lived Intangible Assets, beginning of period	$ 187,936	$ 0
Amortization	(20,721)	(3,626)	$ 0
Net Finite-lived Intangible Assets, end of period	167,215	187,936	0
Trademarks [Member]
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount, beginning of period	5,350	0
Accumulated Amortization, beginning of period	(408)	0
Amortization	(2,140)	(408)
Gross Carrying Amount, end of period	5,350	5,350	0
Accumulated Amortization, end of period	(2,548)	(408)	0
Customer relationships [Member]
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount, beginning of period	179,700	0
Accumulated Amortization, beginning of period	(2,664)	0
Amortization	(12,845)	(2,664)
Gross Carrying Amount, end of period	179,700	179,700	0
Accumulated Amortization, end of period	(15,509)	(2,664)	0
Non-compete Agreements [Member]
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount, beginning of period	6,512	0
Accumulated Amortization, beginning of period	(554)	0
Amortization	(5,736)	(554)
Gross Carrying Amount, end of period	6,512	6,512	0
Accumulated Amortization, end of period	$ (6,290)	(554)	$ 0
VNS [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		10,850
VNS [Member] | Trademarks [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		850
VNS [Member] | Customer relationships [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		10,000
RBI [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		40,300
RBI [Member] | Customer relationships [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		39,900
RBI [Member] | Non-compete Agreements [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		400
SBS [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		140,412
SBS [Member] | Trademarks [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		4,500
SBS [Member] | Customer relationships [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		129,800
SBS [Member] | Non-compete Agreements [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions		$ 6,112