GOODWILL AND INTANGIBLE ASSETS (Gross Carrying Amount and Accumulated Amortization by Major Intangible Asset Class) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		$ 1,355,518	$ 1,289,222
Accumulated amortization		(231,974)	(197,747)
Total Intangible Assets Subject to Amortization, net		1,123,544	1,091,475
Intangible Assets with Indefinite Lives		0	0
Total Intangible Assets, net		1,123,544	1,091,475
Amortization Expense for the Year		46,611	40,541	$ 34,924
Contractual Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		1,158,966	1,132,958
Accumulated amortization		(188,953)	(155,555)
Noncompetition Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		5,667	7,667
Accumulated amortization		(5,167)	(6,126)
Permitting, Permitting Compliance And Zoning Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount		138,958	136,646
Accumulated amortization		(30,180)	(30,545)
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	[1]	51,927	11,951
Accumulated amortization	[1]	$ (7,674)	$ (5,521)

[1] Includes patents, customer relationships, tradenames and trademarks.