GOODWILL AND INTANGIBLE ASSETS, NET - Intangible Assets, Net (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets, Net
Impairment of intangible assets	$ 11,900,000		$ 0
Gross carrying amount	327,782,000	$ 338,497,000
Accumulated amortization	(130,779,000)	(93,251,000)
Net book value	197,003,000	245,246,000
Amortization expense for definite lived intangible assets	41,135,000	37,680,000	$ 28,176,000
2015	32,300,000
2016	26,700,000
2017	23,600,000
2018	21,400,000
2019	19,500,000
Trademarks and trade names
Intangible Assets, Net
Gross carrying amount	15,244,000	13,889,000
Accumulated amortization	(6,491,000)	(5,016,000)
Net book value	$ 8,753,000	8,873,000
Trademarks and trade names | Weighted average
Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life	13 years
Customer-related intangible assets
Intangible Assets, Net
Gross carrying amount	$ 274,428,000	289,308,000
Accumulated amortization	(113,725,000)	(79,606,000)
Net book value	$ 160,703,000	209,702,000
Customer-related intangible assets | Weighted average
Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life	10 years
Operating agreement
Intangible Assets, Net
Gross carrying amount	$ 35,000,000	35,000,000
Accumulated amortization	(10,354,000)	(8,604,000)
Net book value	$ 24,646,000	26,396,000
Operating agreement | Weighted average
Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life	20 years
Noncompete Agreements [Member]
Intangible Assets, Net
Gross carrying amount	$ 1,435,000	0
Accumulated amortization	(115,000)	0
Net book value	$ 1,320,000	0
Noncompete Agreements [Member] | Weighted average
Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life	4 years
Intellectual property
Intangible Assets, Net
Gross carrying amount	$ 300,000	300,000
Accumulated amortization	(55,000)	(25,000)
Net book value	$ 245,000	275,000
Intellectual property | Weighted average
Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life	10 years
Other Intangible Assets [Member] | Weighted average
Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life	5 years
Gross carrying amount	$ 1,375,000	0
Accumulated amortization	(39,000)	0
Net book value	$ 1,336,000	$ 0