Segment Information - EBITDA Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Nov. 30, 2015
Segment Reporting Information [Line Items]
Net income (loss) attributable to controlling interests and available to common stockholders	$ 27,490	$ 22,009	$ 63,022	$ 52,239
Interest expense, net	4,269	5,033	13,227	14,496
Amortization of deferred financing costs and note discount	2,872	2,859	8,636	8,455
Income tax expense	8,388	12,629	26,204	29,837
Depreciation and accretion expense	23,308	22,127	69,085	64,142
Amortization of intangible assets	9,175	10,048	28,129	29,040
EBITDA	75,502	74,705	208,303	198,209
Loss (gain) on disposal of assets	469	(12,139)	(475)	(12,425)
Other expense	360	1,067	748	2,882
Noncontrolling interests	(15)	(336)	(50)	(1,047)
Stock-based compensation expense	6,642	5,147	15,780	14,360
Acquisition and divestiture-related expenses	2,680	13,289	4,938	21,207
Redomicile-related expenses	951		12,201
Adjusted EBITDA	86,589	81,733	241,445	223,186
Depreciation and accretion expense	23,301	22,014	69,063	63,767
Adjusted EBITA	$ 63,288	$ 59,719	$ 172,382	$ 159,419
Majority owned interest percentage	100.00%		100.00%
Mexico
Segment Reporting Information [Line Items]
Majority owned interest percentage	95.70%		95.70%		95.70%	51.00%
Stock-based compensation	$ 0		$ 0