Segment Information - EBITDA Reconciliation (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting [Abstract]
Net income attributable to controlling interests and available to common shareholders		$ 5,732	$ 20,864	$ 9,565	$ 35,654	$ 48,274
Interest expense, net		11,132	6,751	26,362	20,265
Amortization of deferred financing costs and note discount		2,341	3,377	10,226	9,999
Loss on extinguishment of convertible notes	$ 3,000	0	0	3,018	0
Income tax expense (benefit)		10,049	4,086	(4,375)	10,780
Depreciation and accretion expense		33,063	33,466	97,346	99,644
Amortization of intangible assets		7,900	12,404	25,162	37,407
EBITDA		70,217	80,948	167,304	213,749
Loss on disposal and impairment of assets		814	637	1,847	3,101
Other income		(7,116)	(3,703)	(9,651)	(9,454)
Noncontrolling interests		14	15	42	46
Share-based compensation expense		5,921	5,633	16,143	15,367
Restructuring expenses		2,008	3,583	6,557	7,046
Adjusted EBITDA		$ 71,858	$ 87,113	$ 182,242	$ 229,855