Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Shareholders’ equity	Common Stock	Common Stock Class A common shares/units	Common Stock Class B common shares	Preferred shares	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income	Noncontrolling interest
Beginning balances at Dec. 31, 2017	$ 5,875,824	$ 5,149,629		$ 2,861	$ 6	$ 384	$ 5,600,256	$ (453,953)	$ 75	$ 726,195
Beginning balance (in shares) at Dec. 31, 2017				286,114,637	635,075	38,350,000
Increase (Decrease) in Stockholders' Equity
Share-based compensation	975	975					975
Common stock issued under share-based compensation plans, net of shares withheld for employee taxes	(408)	(408)		$ 1			(409)
Common stock issued under share-based compensation plans, net of shares withheld for employee taxes (in shares)				59,187
Repurchase of Class A common shares	(34,969)	(34,969)		$ (18)			(34,951)
Repurchase of Class A common shares (in shares)				(1,804,163)
Distributions to equity holders:
Preferred shares (Note 10)	(14,597)	(14,597)						(14,597)
Noncontrolling interests	(2,768)									(2,768)
Common shares ($0.05 per share)	(14,365)	(14,365)						(14,365)
Net income	21,525	20,411						20,411		1,114
Total other comprehensive income (loss)	9,433	9,433							9,433
Ending balances at Mar. 31, 2018	5,840,650	5,116,109		$ 2,844	$ 6	$ 384	5,565,871	(462,504)	9,508	724,541
Ending balance (in shares) at Mar. 31, 2018				284,369,661	635,075	38,350,000
Beginning balances at Dec. 31, 2018	5,973,742	5,251,965		$ 2,960	$ 6	$ 354	5,732,466	(491,214)	7,393	721,777
Beginning balance (in shares) at Dec. 31, 2018				296,014,546	635,075	35,350,000
Increase (Decrease) in Stockholders' Equity
Share-based compensation	952	952					952
Common stock issued under share-based compensation plans, net of shares withheld for employee taxes	(760)	(760)		$ 1			(761)
Common stock issued under share-based compensation plans, net of shares withheld for employee taxes (in shares)				77,830
Redemptions of Class A units	0	6,522	$ 5				6,505		12	(6,522)
Redemptions of Class A units (in shares)			500,000
Distributions to equity holders:
Preferred shares (Note 10)	(13,782)	(13,782)						(13,782)
Noncontrolling interests	(2,741)									(2,741)
Common shares ($0.05 per share)	(14,889)	(14,889)						(14,889)
Net income	33,091	30,065						30,065		3,026
Total other comprehensive income (loss)	(241)	(203)							(203)	(38)
Ending balances at Mar. 31, 2019	$ 5,975,372	$ 5,259,870		$ 2,966	$ 6	$ 354	$ 5,739,162	$ (489,820)	$ 7,202	$ 715,502
Ending balance (in shares) at Mar. 31, 2019				296,592,376	635,075	35,350,000