The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Goodwill and Intangible Assets, net Goodwill and Intangible Assets (Intangible Rollforward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]
Net Finite-lived Intangible Assets, beginning of period	$ 0
Amortization	(3,626)	$ 0	$ (1,310)
Net Finite-lived Intangible Assets, end of period	187,936	0
Trademarks [Member]
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount, beginning of period	0
Accumulated Amortization, beginning of period	0
Amortization	(408)
Gross Carrying Amount, end of period	5,350	0
Accumulated Amortization, end of period	(408)	0
Customer relationships [Member]
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount, beginning of period	0
Accumulated Amortization, beginning of period	0
Amortization	(2,664)
Gross Carrying Amount, end of period	179,700	0
Accumulated Amortization, end of period	(2,664)	0
Noncompete Agreements [Member]
Finite-lived Intangible Assets [Roll Forward]
Gross Carrying Amount, beginning of period	0
Accumulated Amortization, beginning of period	0
Amortization	(554)
Gross Carrying Amount, end of period	6,512	0
Accumulated Amortization, end of period	(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] \| Noncompete 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] \| Noncompete Agreements [Member]
Finite-lived Intangible Assets [Roll Forward]
Acquisitions	$ 6,112