Segment Information - EBITDA Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Information
Net income attributable to controlling interests and available to common shareholders	$ 15,158		$ 20,148	$ 14,257	$ 35,532
Interest expense, net	9,460		4,466	16,017	8,958
Amortization of deferred financing costs and note discount	3,146		2,982	6,122	5,764
Income tax expense	4,670		9,861	1,718	17,816
Depreciation and accretion expense	29,755		23,100	58,876	45,777
Amortization of intangible assets	15,247		9,691	30,427	18,954
EBITDA	77,436		70,248	127,417	132,801
Loss on disposal and impairment of assets	669		(1,326)	3,863	(944)
Other expense	1,945		943	365	388
Noncontrolling interests	(6)		(17)	(10)	(35)
Share-based compensation expense	3,623		5,970	5,820	9,138
Acquisition and divestiture-related expenses	3,993		674	12,449	2,258
Redomicile-related expenses			5,214	760	11,250
Restructuring expenses	0	$ 8,200		8,243
Adjusted EBITDA	87,660		81,706	158,907	154,856
Depreciation and accretion expense	29,754		23,093	58,872	45,762
Adjusted EBITA	$ 57,906		$ 58,613	$ 100,035	$ 109,094