GOODWILL AND INTANGIBLE ASSETS (Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Class) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		$ 874,550	$ 859,017
Accumulated amortization		(105,498)	(92,438)
Total Intangible Assets Subject to Amortization, net		769,052	766,579
Intangible Assets with Indefinite Lives		0	0
Total Intangible Assets, net		769,052	766,579
Amortization Expense for the Year		17,565	15,618	$ 10,966
Contractual Rights In Place [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		742,085	735,935
Accumulated amortization		(77,515)	(65,641)
Noncompetition Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		6,757	2,800
Accumulated amortization		(1,118)	(506)
Favorable Lease Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		9,479	16,677
Accumulated amortization		(2,822)	(4,002)
Permitting Permitting Compliance And Zoning Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		112,058	99,513
Accumulated amortization		(21,701)	(20,350)
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	[1]	4,171	4,092
Accumulated amortization	[1]	$ (2,342)	$ (1,939)

[1] Includes customer relationships and tradenames and trademarks.